{"product_id":"4b0-407-643-a-genuine-vw-audi-m16-drive-axle-shoulder-bolt","title":"4B0-407-643-A Genuine VW\/Audi M16 Drive Axle Shoulder Bolt","description":"\u003ch2\u003eM16 fastener for the outer drive axle\u003c\/h2\u003e\u003cp\u003eGenuine VW\/Audi 4B0-407-643-A passes through the wheel hub and bearing into the outer drive axle. Correct fastener selection maintains the clamped axle-to-hub connection required by the original assembly.\u003c\/p\u003e\u003cp\u003eThe A suffix identifies the M16 version. Confirm the thread and VIN split carefully when servicing older applications, because a visually similar M14 bolt is also used in this part family.\u003c\/p\u003e\u003ch3\u003eTechnical details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eComplete factory number: 4B0-407-643-A.\u003c\/li\u003e\n\u003cli\u003eFactory specification: M16 × 1.5 × 72 drive axle shoulder bolt.\u003c\/li\u003e\n\u003cli\u003eDesign: internal hex drive, flanged seating face and partially threaded shank.\u003c\/li\u003e\n\u003cli\u003eQuantity supplied: one individual drive axle shoulder bolt.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThread diameter and pitch, effective bolt length and the seating arrangement must all agree with the axle and hub. A replacement axle or previously changed hub can alter the required hardware, so inspect the installed components as well as the vehicle identification.\u003c\/p\u003e\u003ch3\u003eCommon reasons to replace\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThe axle or wheel bearing repair requires a replacement retaining bolt.\u003c\/li\u003e\n\u003cli\u003eThe internal hex drive is damaged and no longer accepts the tool securely.\u003c\/li\u003e\n\u003cli\u003eThreads, shoulder or seating face have suffered damage or substantial corrosion.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eInspect the axle's internal thread and the hub seating surfaces before fitting new hardware. A new bolt cannot correct damaged axle threads or an improperly seated wheel bearing.\u003c\/p\u003e\u003ch3\u003eVehicle fitment\u003c\/h3\u003e\u003cp\u003eObserve the VIN cutoffs and the M16 thread requirement below. Match the original 4B0-407-643-A fastener before ordering.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eVehicle\u003c\/th\u003e\n\u003cth\u003eModel years\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003eApplication restrictions\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi A4\u003c\/td\u003e\n\u003ctd\u003e2001\u003c\/td\u003e\n\u003ctd\u003e1.8L turbo gasoline, AWM\u003c\/td\u003e\n\u003ctd\u003eB5 FWD \/ quattro\u003c\/td\u003e\n\u003ctd\u003eFrom VIN 8D-1-050001; original M16 outer axle bolt position.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolkswagen Passat\u003c\/td\u003e\n\u003ctd\u003e2001–2005\u003c\/td\u003e\n\u003ctd\u003e1.8L turbo \/ 2.8L V6 gasoline\u003c\/td\u003e\n\u003ctd\u003eB5 \/ B5.5 FWD sedan \/ wagon\u003c\/td\u003e\n\u003ctd\u003eFrom VIN 3B-1-050001; original M16 outer axle bolt position.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolkswagen Passat\u003c\/td\u003e\n\u003ctd\u003e2002–2004\u003c\/td\u003e\n\u003ctd\u003e4.0L W8 gasoline\u003c\/td\u003e\n\u003ctd\u003e4MOTION sedan \/ wagon\u003c\/td\u003e\n\u003ctd\u003eOriginal M16 outer axle bolt arrangement; match full part number.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi A4\u003c\/td\u003e\n\u003ctd\u003e2005–2008\u003c\/td\u003e\n\u003ctd\u003e2.0L turbo gasoline\u003c\/td\u003e\n\u003ctd\u003eB7 sedan; FWD \/ quattro\u003c\/td\u003e\n\u003ctd\u003eOriginal M16 outer axle\/hub bolt only; match installed assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi A4 \/ A4 Avant\u003c\/td\u003e\n\u003ctd\u003e2005–2008\u003c\/td\u003e\n\u003ctd\u003e3.2L V6 gasoline\u003c\/td\u003e\n\u003ctd\u003eB7 sedan \/ Avant; quattro\u003c\/td\u003e\n\u003ctd\u003eOriginal M16 outer axle\/hub bolt only; match installed assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi A4 Avant\u003c\/td\u003e\n\u003ctd\u003e2005–2008\u003c\/td\u003e\n\u003ctd\u003e2.0L turbo gasoline\u003c\/td\u003e\n\u003ctd\u003eB7 wagon; quattro\u003c\/td\u003e\n\u003ctd\u003eOriginal M16 outer axle\/hub bolt only; match installed assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi A4 Cabriolet\u003c\/td\u003e\n\u003ctd\u003e2007–2009\u003c\/td\u003e\n\u003ctd\u003e2.0L turbo \/ 3.2L V6 gasoline\u003c\/td\u003e\n\u003ctd\u003eB7 convertible; 2.0L FWD \/ quattro, 3.2L quattro\u003c\/td\u003e\n\u003ctd\u003eOriginal M16 outer axle\/hub bolt only; match installed assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi S4\u003c\/td\u003e\n\u003ctd\u003e2005–2008\u003c\/td\u003e\n\u003ctd\u003e4.2L V8 gasoline\u003c\/td\u003e\n\u003ctd\u003eB7 sedan \/ Avant; quattro\u003c\/td\u003e\n\u003ctd\u003eOriginal M16 outer axle\/hub bolt only; match installed assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi S4 Cabriolet\u003c\/td\u003e\n\u003ctd\u003e2007–2009\u003c\/td\u003e\n\u003ctd\u003e4.2L V8 gasoline\u003c\/td\u003e\n\u003ctd\u003eB7 convertible; quattro\u003c\/td\u003e\n\u003ctd\u003eOriginal M16 outer axle\/hub bolt only; match installed assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi RS4\u003c\/td\u003e\n\u003ctd\u003e2007–2008\u003c\/td\u003e\n\u003ctd\u003e4.2L FSI V8 gasoline\u003c\/td\u003e\n\u003ctd\u003eB7 sedan; quattro\u003c\/td\u003e\n\u003ctd\u003eOriginal M16 outer axle\/hub bolt only; match installed assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi RS4 Cabriolet\u003c\/td\u003e\n\u003ctd\u003e2008\u003c\/td\u003e\n\u003ctd\u003e4.2L FSI V8 gasoline\u003c\/td\u003e\n\u003ctd\u003equattro; 6-speed manual\u003c\/td\u003e\n\u003ctd\u003eRear axle-to-hub retaining bolt; M16 × 1.5 × 72.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi RS6\u003c\/td\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003ctd\u003e4.2L twin-turbo V8 gasoline\u003c\/td\u003e\n\u003ctd\u003eC5 sedan; quattro\u003c\/td\u003e\n\u003ctd\u003eFront axle-to-hub retaining bolt; original M16 connection.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation guidance\u003c\/h3\u003e\u003cp\u003eFollow the exact axle and wheel bearing service procedure for the vehicle. Observe the specified supported-vehicle condition, initial tightening, final torque and any angle stage; do not substitute a generic fastener torque.\u003c\/p\u003e\u003cp\u003eComplete the axle installation checks and ensure that the wheel bearing has been loaded and secured as required before moving the vehicle. Replace other disturbed fasteners when the repair procedure requires it.\u003c\/p\u003e\u003ch3\u003eOrdering information\u003c\/h3\u003e\u003cp\u003eSupplied as one individual Genuine VW\/Audi 4B0-407-643-A bolt. Verify the quantity and axle position needed for the repair.\u003c\/p\u003e","brand":"Genuine VW\/Audi","offers":[{"title":"Default Title","offer_id":48048373563569,"sku":"4B0-407-643-A","price":41.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0681\/1379\/3201\/files\/4b0-407-643-a-genuine-vw-audi-1.jpg?v=1792148469","url":"https:\/\/hstuning.com\/products\/4b0-407-643-a-genuine-vw-audi-m16-drive-axle-shoulder-bolt","provider":"HS Tuning ","version":"1.0","type":"link"}