{"product_id":"tesla-model-y-seat-belt-extender","title":"Tesla Model Y Seat Belt Extender","description":"\u003cdiv style=\"max-width: 760px; margin: 0 auto; font-family: Arial,Helvetica,sans-serif; color: #333333; font-size: 16px; line-height: 1.7; text-align: left; box-sizing: border-box;\"\u003e\n\u003cdiv style=\"border: 2px solid #1a1f24; border-radius: 12px; padding: 22px 24px; margin-bottom: 30px;\"\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-size: 12.5px; font-weight: bold; letter-spacing: 1.4px; color: #7f1d1d; text-transform: uppercase;\"\u003e\u003cstrong\u003eTesla Model Y · Seat Belt Extender\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2 style=\"font-size: 29px; line-height: 1.25; color: #1a1f24; margin: 0 0 14px 0;\"\u003eThe Second Row Is The One To Get Right\u003c\/h2\u003e\n\u003cp style=\"margin: 0; color: #4a4f55; font-size: 15.5px; line-height: 1.7;\"\u003eFront seats in a Model Y take an ordinary extender without much fuss. The second row does not, and it is the position that generates most of the complaints we see on this car. Read the section on it before you choose anything, because the usual advice about picking a length does not help if the part cannot latch in the first place.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size: 20px; color: #1a1f24; margin: 0 0 6px 0;\"\u003eStart With Three Questions\u003c\/h3\u003e\n\u003cp style=\"font-size: 15px; color: #555a60; margin: 0 0 20px 0; line-height: 1.6;\"\u003eAnswer these before looking at lengths. They decide the part more than your size does.\u003c\/p\u003e\n\u003cdiv style=\"border-left: 3px solid #7f1d1d; padding: 0 0 0 20px; margin: 0 0 16px 0;\"\u003e\n\u003cp style=\"margin: 0 0 6px 0; font-size: 16px; font-weight: bold; color: #1a1f24;\"\u003e1. Which row?\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; color: #555a60; line-height: 1.65;\"\u003eFront, second, or third if yours is the seven seater. The three rows use different belt hardware, and a part bought for one will not reliably serve another. More than half the fit problems on this car trace back to a front-seat part ordered for a rear seat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 3px solid #7f1d1d; padding: 0 0 0 20px; margin: 0 0 16px 0;\"\u003e\n\u003cp style=\"margin: 0 0 6px 0; font-size: 16px; font-weight: bold; color: #1a1f24;\"\u003e2. Is your hand stopping short, or is the belt stopping short?\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; color: #555a60; line-height: 1.65;\"\u003eSit as you normally travel, close your eyes, and reach. If your hand meets the console or seat base before it finds the latch, you need height and a rigid extender. If your hand lands on the latch but the belt will not stretch to meet it, you need length and a regular one. Two different products for two different problems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 3px solid #7f1d1d; padding: 0 0 0 20px; margin: 0 0 30px 0;\"\u003e\n\u003cp style=\"margin: 0 0 6px 0; font-size: 16px; font-weight: bold; color: #1a1f24;\"\u003e3. One person, or many?\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; color: #555a60; line-height: 1.65;\"\u003eA driver's seat used by the same person every day suits a fixed length. A rear seat carrying different passengers suits the adjustable, which slides across a wide range without keeping several units in the car. Rideshare and private hire owners usually want a mix of both.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fbeaea; border-radius: 12px; padding: 26px; margin: 0 0 16px 0;\"\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-size: 12.5px; font-weight: bold; letter-spacing: 1.2px; color: #7f1d1d; text-transform: uppercase;\"\u003eThe Model Y Second Row, In Detail\u003c\/p\u003e\n\u003ch3 style=\"font-size: 20px; color: #7f1d1d; margin: 0 0 12px 0;\"\u003eWhy A Part Can Click In And Still Be Wrong\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 12px 0; font-size: 14.5px; line-height: 1.7; color: #4a2b2b;\"\u003eOwners of this car report a specific and repeatable fault. An extender bought on the strength of fitting a Tesla goes into the second row buckle, clicks, and feels secure. Then the car's own belt tongue will not lock into the other end of it. The reason is that the Model Y's second row belt tongue is shorter than most, so it slides into the extender without ever reaching the locking mechanism inside.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 12px 0; font-size: 14.5px; line-height: 1.7; color: #4a2b2b;\"\u003eA second version of the same problem is worse, because it looks like success. The tongue goes in far enough to press the extender's release button from the inside, so the assembly sits there apparently fastened while holding nothing. Owners who have measured the gap report that an extender tongue under roughly 30mm is what engages properly in this row.\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; line-height: 1.7; color: #4a2b2b;\"\u003e\u003cstrong\u003eWhat this means for ordering.\u003c\/strong\u003e Treat any listing claiming to fit every Tesla from every year as a warning rather than a reassurance. Parts that work in the rear of one Tesla have been reported failing in the rear of another, so the badge on the bonnet is not enough. Photograph your second row latch plate beside the buckle and send it to us, and we will match the part to the hardware instead of to the model name.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f6f6f6; border-radius: 10px; padding: 18px 22px; margin: 0 0 30px 0;\"\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; line-height: 1.65; color: #4a4f55;\"\u003e\u003cstrong style=\"color: #1a1f24;\"\u003eA test anyone can run in thirty seconds.\u003c\/strong\u003e Fit the extender, then click your factory belt into it and pull firmly on the webbing. If the belt releases, pops out, or the extender itself unclips, the part is wrong for that row. Do not keep using it on the basis that it clicked. A belt that disengages under load is worse than no extender, because it feels fastened right up until it matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size: 20px; color: #1a1f24; margin: 0 0 6px 0;\"\u003eSeat By Seat\u003c\/h3\u003e\n\u003cp style=\"font-size: 15px; color: #555a60; margin: 0 0 20px 0; line-height: 1.6;\"\u003eTesla publishes no buckle dimensions for any of its cars, so what follows comes from measured aftermarket fitments and from owners who have tested parts across rows. Use it to narrow the choice, then confirm with a photograph.\u003c\/p\u003e\n\u003cdiv style=\"border: 1px solid #e5e7eb; border-radius: 10px; padding: 20px 22px; margin: 0 0 12px 0;\"\u003e\n\u003cp style=\"margin: 0 0 4px 0; font-size: 17px; font-weight: bold; color: #1a1f24;\"\u003eFront Driver And Front Passenger\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-size: 13.5px; color: #7f1d1d; font-weight: bold;\"\u003eTongue around 7\/8 inch, roughly 22mm · Usually rigid 3 inch or 5 inch\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; color: #555a60; line-height: 1.65;\"\u003eBoth front seats use the fitting found across most of the industry, so the hardware itself is rarely the obstacle. What causes trouble is the console, which runs the length of the cabin and drops the stalk into a slot you reach into without being able to see it. A rigid section holds the buckle above that line. Step up to 7 inch if you drive in a heavy coat or over a utility belt.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #7f1d1d; border-radius: 10px; padding: 20px 22px; margin: 0 0 12px 0;\"\u003e\n\u003cp style=\"margin: 0 0 4px 0; font-size: 17px; font-weight: bold; color: #7f1d1d;\"\u003eSecond Row Outer, Left And Right\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-size: 13.5px; color: #7f1d1d; font-weight: bold;\"\u003eShorter tongue than the front · Confirm by photograph before ordering\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; color: #555a60; line-height: 1.65;\"\u003eThe position described in the section above, and the one worth slowing down for. Assuming the hardware is confirmed, most owners here need length rather than height, which means a regular 18cm as a starting point and 25cm where the reach behind the hip is longer or winter clothing is involved. The bench cushion sits low and long, so the latch ends up behind you rather than beside you.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e5e7eb; border-radius: 10px; padding: 20px 22px; margin: 0 0 12px 0;\"\u003e\n\u003cp style=\"margin: 0 0 4px 0; font-size: 17px; font-weight: bold; color: #1a1f24;\"\u003eSecond Row Centre\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-size: 13.5px; color: #7f1d1d; font-weight: bold;\"\u003eSeparate stalk from the outer seats · Usually regular 25cm\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; color: #555a60; line-height: 1.65;\"\u003eRuns from its own mounting rather than sharing with the seats either side, so order it as its own item rather than adding a second outer part. The center occupant sits furthest from their latch of anyone in the car, which is why 25cm is the sensible opening choice here rather than a step up from 18cm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e5e7eb; border-radius: 10px; padding: 20px 22px; margin: 0 0 30px 0;\"\u003e\n\u003cp style=\"margin: 0 0 4px 0; font-size: 17px; font-weight: bold; color: #1a1f24;\"\u003eThird Row, Seven Seat Cars Only\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-size: 13.5px; color: #7f1d1d; font-weight: bold;\"\u003eShorter belts again, anchored differently · Dedicated third row part\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; color: #555a60; line-height: 1.65;\"\u003eOrder separately and do not expect a second row extender to transfer backwards. Access is through buttons that slide and fold the middle row forward, so check after every use that no webbing or stalk has been trapped behind a cushion. Adjustable suits this row well, since the people who sit there change more often than anywhere else in the car.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fdf6e9; border: 1px solid #e8d5a8; border-left: 4px solid #b8860b; border-radius: 8px; padding: 22px 24px; margin: 0 0 16px 0;\"\u003e\n\u003ch3 style=\"margin: 0 0 12px 0; font-size: 19px; color: #6b4d00;\"\u003eIf Yours Is The Seven Seater\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 12px 0; font-size: 14.5px; line-height: 1.7; color: #5a4a2a;\"\u003eTesla reintroduced a seven seat Model Y to the UK in spring 2026, priced from around £54,490, which is roughly £2,500 above the five seat car, and offered initially as Long Range All-Wheel Drive only. The extra pair sit in what was the boot and face forward, with 381 litres of luggage space remaining behind them.\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; line-height: 1.7; color: #5a4a2a;\"\u003eOne detail matters more than the rest for anyone carrying children. \u003cstrong\u003eThe third row has no ISOFIX points.\u003c\/strong\u003e Since Tesla separately prohibits using an extender on any belt securing a child seat or booster, that row is suitable for adults and larger children travelling on the belt alone. Anyone needing an anchored restraint should be in the second row outer seats, where the anchors are.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fdf6e9; border: 1px solid #e8d5a8; border-left: 4px solid #b8860b; border-radius: 8px; padding: 22px 24px; margin: 0 0 30px 0;\"\u003e\n\u003ch3 style=\"margin: 0 0 12px 0; font-size: 19px; color: #6b4d00;\"\u003eWhat Tesla Says, And What It Does Not\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 12px 0; font-size: 14.5px; line-height: 1.7; color: #5a4a2a;\"\u003eTesla does not sell a factory extender for the Model Y and publishes nothing on adult extender use either way. What the owner's manual does state, in wording repeated across the Model S, Model 3 and Model X, is that a seat belt extender must never be used on a belt that is securing a child safety seat or booster seat.\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; line-height: 1.7; color: #5a4a2a;\"\u003eOne more manual detail saves confusion while you are measuring. Passenger positions use automatic locking retractors, so pulling the webbing all the way out engages a ratchet that will not pay out again until the belt is unbuckled and fully rewound. A belt that suddenly refuses to extend mid-measurement is almost always that mechanism rather than a fault.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size: 20px; color: #1a1f24; margin: 0 0 6px 0;\"\u003eMeasuring Before You Order\u003c\/h3\u003e\n\u003cp style=\"font-size: 15px; color: #555a60; margin: 0 0 18px 0; line-height: 1.6;\"\u003eFour steps, and the aim throughout is the shortest extender that lets you fasten without strain. Whatever length you order sits permanently between your hip and the anchor, so surplus webbing adds slack rather than protection.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14.5px; color: #2b2f36; margin: 0 0 30px 0;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #e5e7eb; width: 44px; text-align: center; font-weight: bold; color: #7f1d1d; font-size: 18px; vertical-align: top;\"\u003e1\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #e5e7eb;\"\u003e\n\u003cstrong style=\"color: #1a1f24;\"\u003eDress as you travel.\u003c\/strong\u003e Do the whole exercise in the coat, jacket or work gear you actually wear in the car. Measuring in a shirt and ordering on that basis is the commonest reason a length comes up short in January.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fafafa;\"\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #e5e7eb; text-align: center; font-weight: bold; color: #7f1d1d; font-size: 18px; vertical-align: top;\"\u003e2\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #e5e7eb;\"\u003e\n\u003cstrong style=\"color: #1a1f24;\"\u003ePull the belt to full extension first.\u003c\/strong\u003e Establish that the webbing genuinely will not reach rather than that the retractor is being stubborn. If it reaches past the buckle with slack to spare, the mechanism needs attention and an extender will not help.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #e5e7eb; text-align: center; font-weight: bold; color: #7f1d1d; font-size: 18px; vertical-align: top;\"\u003e3\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #e5e7eb;\"\u003e\n\u003cstrong style=\"color: #1a1f24;\"\u003eMeasure the shortfall, not the seat.\u003c\/strong\u003e Hold the belt tongue where your hand comfortably sits and measure from there to the mouth of the buckle. That distance, rounded up to the next available size, is your length. Most people need less than they expect.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fafafa;\"\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #e5e7eb; text-align: center; font-weight: bold; color: #7f1d1d; font-size: 18px; vertical-align: top;\"\u003e4\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 16px; border: 1px solid #e5e7eb;\"\u003e\n\u003cstrong style=\"color: #1a1f24;\"\u003ePhotograph the latch plate.\u003c\/strong\u003e For any second or third row order, send a picture of the tongue lying beside the buckle. On this car that single image settles more than the year, trim and seat description put together.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background: linear-gradient(135deg,#1a1f24 0%,#2b2f36 100%); border-radius: 12px; padding: 24px; margin: 0 0 30px 0;\"\u003e\n\u003cp style=\"margin: 0 0 14px 0; color: #ffffff; font-size: 17px; font-weight: bold;\"\u003e🛡 Certification And Build\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0; color: #d8dbdf; font-size: 14.5px; line-height: 1.7;\"\u003eEvery extender we sell carries ECE R 16 certified type approval, the European mark confirming the part has been tested and approved against the relevant standard. Manufacturing takes place in a UK registered factory operating to ISO\/TS 16949:2009, and the parts are built to exceed international break-strength requirements for three-point seat belts.\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #d8dbdf; font-size: 14.5px; line-height: 1.7;\"\u003eLatch plates are finished smooth rather than left with a machined edge, which matters against the light upholstery many Model Y interiors are specified with.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size: 20px; color: #1a1f24; margin: 0 0 18px 0;\"\u003eWho This Product Is For\u003c\/h3\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 16px; margin: 0 0 30px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 330px; border: 1px solid #e5e7eb; border-radius: 10px; padding: 22px;\"\u003e\n\u003cp style=\"margin: 0 0 12px 0; font-size: 15px; font-weight: bold; color: #1a1f24;\"\u003eWorth ordering if you are\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 9px 0; font-size: 14.5px; color: #4a4f55; line-height: 1.6;\"\u003eA plus-sized driver or passenger who cannot fasten the factory belt without strain.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 9px 0; font-size: 14.5px; color: #4a4f55; line-height: 1.6;\"\u003eReaching blind into the slot beside that full-length center console.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 9px 0; font-size: 14.5px; color: #4a4f55; line-height: 1.6;\"\u003eSitting in the second row center, the longest reach in the car.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 9px 0; font-size: 14.5px; color: #4a4f55; line-height: 1.6;\"\u003eDriving for rideshare or private hire with different passengers each day.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 9px 0; font-size: 14.5px; color: #4a4f55; line-height: 1.6;\"\u003eWearing a utility belt, body armour or heavy workwear behind the wheel.\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; color: #4a4f55; line-height: 1.6;\"\u003eLiving with reduced shoulder movement, reach or general mobility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 330px; border: 1px solid #e5e7eb; border-radius: 10px; padding: 22px;\"\u003e\n\u003cp style=\"margin: 0 0 12px 0; font-size: 15px; font-weight: bold; color: #1a1f24;\"\u003eNot the right product if you are\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 9px 0; font-size: 14.5px; color: #4a4f55; line-height: 1.6;\"\u003eFitting a child seat or booster, which Tesla's own manual rules out entirely.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 9px 0; font-size: 14.5px; color: #4a4f55; line-height: 1.6;\"\u003eAlready able to fasten the belt comfortably and buying as a precaution.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 9px 0; font-size: 14.5px; color: #4a4f55; line-height: 1.6;\"\u003eTrying to stop the chime sounding on an empty seat.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 9px 0; font-size: 14.5px; color: #4a4f55; line-height: 1.6;\"\u003eDealing with a belt that reaches fully but retracts stiffly, which is a retractor matter.\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; color: #4a4f55; line-height: 1.6;\"\u003eHoping to cover all seven positions rather than the ones genuinely needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e5e7eb; border-radius: 10px; padding: 22px; margin: 0 0 30px 0;\"\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-size: 15px; font-weight: bold; color: #1a1f24;\"\u003eOther Teslas In The Range\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14.5px; color: #555a60; line-height: 1.65;\"\u003eRear belt hardware is not shared consistently across Tesla models, so each car needs its own fitment check even within the same household. For the SUV with falcon wing doors and a middle row offered as either a bench or individual chairs, see our \u003ca href=\"https:\/\/seatbeltsextender.co.uk\/products\/tesla-model-x-seat-belt-extender\" style=\"color: #7f1d1d; font-weight: bold; text-decoration: underline;\" target=\"_blank\" rel=\"noopener\"\u003eTesla Model X seat belt extender\u003c\/a\u003e. For the liftback saloon, where ISOFIX anchors sit only in the rear outer seats, see the \u003ca href=\"https:\/\/seatbeltsextender.co.uk\/products\/tesla-model-s-seat-belt-extender\" style=\"color: #7f1d1d; font-weight: bold; text-decoration: underline;\" target=\"_blank\" rel=\"noopener\"\u003eTesla Model S seat belt extender\u003c\/a\u003e. Both pages carry the same seat-by-seat detail as this one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 20px; color: rgb(26, 31, 36); margin: 0px 0px 18px; text-align: center;\"\u003e\u003cstrong\u003eQuestions Worth Answering\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv style=\"max-width: 760px; margin: 0 auto;\"\u003e\n\u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 10px; margin: 0 0 10px 0; overflow: hidden;\"\u003e\n\u003csummary style=\"display: block; list-style: none; padding: 16px 18px; cursor: pointer; font-size: 15.5px; font-weight: bold; color: #1a1f24; background: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; width: 28px; height: 28px; border-radius: 50%; background: #7f1d1d; color: #ffffff; text-align: center; line-height: 28px; font-size: 14px; margin-right: 12px;\"\u003e1\u003c\/span\u003eMy Extender Clicks In But The Belt Will Not Lock. Why?\u003cspan style=\"float: right; color: #7f1d1d; font-weight: bold;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 6px 18px 18px 58px; font-size: 14.5px; color: #555a60; line-height: 1.65;\"\u003eYou almost certainly have a front-seat part in a second row position, and on the Model Y it is the single most reported problem. The second row belt tongue is shorter than most, so it slides into the extender without reaching the locking mechanism inside. A nastier variant has the tongue pressing the extender's release button from within, leaving an assembly that appears fastened while holding nothing. Owners who have measured it report that a tongue under roughly 30mm is what engages. Stop using the part, tell us the row, and send a photograph.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 10px; margin: 0 0 10px 0; overflow: hidden;\"\u003e\n\u003csummary style=\"display: block; list-style: none; padding: 16px 18px; cursor: pointer; font-size: 15.5px; font-weight: bold; color: #1a1f24; background: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; width: 28px; height: 28px; border-radius: 50%; background: #7f1d1d; color: #ffffff; text-align: center; line-height: 28px; font-size: 14px; margin-right: 12px;\"\u003e2\u003c\/span\u003eWhich Length Should Each Seat Take?\u003cspan style=\"float: right; color: #7f1d1d; font-weight: bold;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 6px 18px 18px 58px; font-size: 14.5px; color: #555a60; line-height: 1.65;\"\u003eFront seats generally want rigid rather than long, so 3 inch or 5 inch, stepping to 7 inch for heavy clothing, because the obstacle is the recessed console rather than the belt. Second row outer seats suit a regular 18cm, moving to 25cm where the reach behind the hip is longer. The second row centre is the furthest reach in the car and starts at 25cm. A third row seat also starts at 25cm, or adjustable from 23cm to 66cm if different people use it. Order the shortest size that works, since surplus webbing is slack rather than safety.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 10px; margin: 0 0 10px 0; overflow: hidden;\"\u003e\n\u003csummary style=\"display: block; list-style: none; padding: 16px 18px; cursor: pointer; font-size: 15.5px; font-weight: bold; color: #1a1f24; background: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; width: 28px; height: 28px; border-radius: 50%; background: #7f1d1d; color: #ffffff; text-align: center; line-height: 28px; font-size: 14px; margin-right: 12px;\"\u003e3\u003c\/span\u003eCan I Use One With A Child Seat Or Booster?\u003cspan style=\"float: right; color: #7f1d1d; font-weight: bold;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 6px 18px 18px 58px; font-size: 14.5px; color: #555a60; line-height: 1.65;\"\u003eNo, and the instruction is Tesla's rather than ours. The owner's manual states that a seat belt extender must not be used on a belt being used to install a child safety seat or booster seat, and the same warning runs through the Model S, Model 3 and Model X manuals. Use the anchor points instead. Worth knowing on a seven seat car that the third row has no ISOFIX points at all, so an anchored restraint belongs in the second row outer seats where the anchors are fitted.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 10px; margin: 0 0 10px 0; overflow: hidden;\"\u003e\n\u003csummary style=\"display: block; list-style: none; padding: 16px 18px; cursor: pointer; font-size: 15.5px; font-weight: bold; color: #1a1f24; background: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; width: 28px; height: 28px; border-radius: 50%; background: #7f1d1d; color: #ffffff; text-align: center; line-height: 28px; font-size: 14px; margin-right: 12px;\"\u003e4\u003c\/span\u003eWill A Model 3 Or Model X Part Fit My Model Y?\u003cspan style=\"float: right; color: #7f1d1d; font-weight: bold;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 6px 18px 18px 58px; font-size: 14.5px; color: #555a60; line-height: 1.65;\"\u003eNot reliably, and a seller promising to fit every Tesla should prompt caution rather than confidence. The front seats are forgiving because they use the common industry fitting, but the rear rows are where cross-model assumptions fall apart, and owners have specifically reported parts working in one Tesla's rear seats and failing in another's. Order by the exact model, year and seat position. If you run more than one Tesla, check each car separately rather than assuming the household takes one part.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 10px; margin: 0 0 10px 0; overflow: hidden;\"\u003e\n\u003csummary style=\"display: block; list-style: none; padding: 16px 18px; cursor: pointer; font-size: 15.5px; font-weight: bold; color: #1a1f24; background: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; width: 28px; height: 28px; border-radius: 50%; background: #7f1d1d; color: #ffffff; text-align: center; line-height: 28px; font-size: 14px; margin-right: 12px;\"\u003e5\u003c\/span\u003eIs It Road Legal Here, And What If It Does Not Fit?\u003cspan style=\"float: right; color: #7f1d1d; font-weight: bold;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 6px 18px 18px 58px; font-size: 14.5px; color: #555a60; line-height: 1.65;\"\u003eOur extenders carry E4 or E8 type approval and are made in a UK registered factory compliant with ISO\/TS 16949:2009, built to exceed international break-strength requirements for three-point belts. Read your owner's manual alongside the safety notes supplied before use. Extenders are intended only for people who cannot otherwise fasten the standard belt, and should be unclipped when a seat is empty, since the car monitors occupancy and belt status. If the part does not fit, return it within the guarantee window for a refund, although sending a photograph of your buckle first usually avoids the round trip altogether.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Seat Belt Extenders UK","offers":[{"title":"25cm Black Rigid Extender","offer_id":59575574266188,"sku":null,"price":20.0,"currency_code":"GBP","in_stock":true},{"title":"25cm Grey Rigid Extender","offer_id":59575574298956,"sku":null,"price":20.0,"currency_code":"GBP","in_stock":true},{"title":"25cm Beige Rigid Extender","offer_id":59575574331724,"sku":null,"price":20.0,"currency_code":"GBP","in_stock":true},{"title":"12cm Black Rigid Extender","offer_id":59575574364492,"sku":null,"price":15.0,"currency_code":"GBP","in_stock":true},{"title":"12cm Beige Rigid Extender","offer_id":59575574397260,"sku":null,"price":15.0,"currency_code":"GBP","in_stock":true},{"title":"12cm Grey Rigid Extender","offer_id":59575574430028,"sku":null,"price":15.0,"currency_code":"GBP","in_stock":true},{"title":"23cm Regular Extender","offer_id":59575574462796,"sku":null,"price":20.0,"currency_code":"GBP","in_stock":true},{"title":"36cm Universal Extender","offer_id":59575574495564,"sku":null,"price":25.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1077\/0582\/7660\/files\/tesla-model-y-23cm-regular-webbing-seat-belt-extender.webp?v=1793088227","url":"https:\/\/seatbeltsextender.co.uk\/products\/tesla-model-y-seat-belt-extender","provider":"Seat Belt Extenders UK | ECE R16 Certified","version":"1.0","type":"link"}