OVERVIEW
Genuine VW/Audi driveshaft coupling bolt, part number N-103-291-02. This original collared hex fastener is cataloged at the specified flex-coupling attachment. The confirmed applications below require the original all-wheel-drive coupling arrangement and exact hardware match.
Technical details
- Original part number: N-103-291-02 / N10329102.
- Published nominal catalog size: M10 x 60 x 45.
- External hex head with an integral collar.
- Earlier cataloged number: N10329101.
- Supplied individually. Coupling, driveshaft, differential and other bolts are separate.
- For the cataloged MQB rear coupling, this number identifies the coupling-to-rear-differential bolt; driveshaft-to-coupling hardware is separately specified as WHT005179.
The flex coupling connects the rotating driveline components through its designed mounting arrangement. Correct hardware and fastening procedures are necessary to retain the joint in its intended position.
Adjacent coupling attachments can use bolts with different lengths, drive forms and part numbers. Select this fastener by the original number and exact connection, rather than treating every M10 coupling bolt as interchangeable.
Common reasons to replace
Renew the bolt whenever the applicable repair procedure requires replacement after removal during driveshaft, coupling or rear drivetrain service. Replace missing hardware, damaged threads, rounded hex surfaces, deformation or corrosion affecting the bolt's condition.
Inspect the flex coupling and mating flanges when the original connection was loose or damaged. Cracks, displaced sleeves, damaged mating threads or defective mounting surfaces require attention beyond a new bolt.
Driveline vibration, knocking or movement can originate from the coupling, shaft support, mounting hardware or another component. A new bolt alone will not repair a deteriorated flex joint, misaligned assembly or damaged shaft.
Installation and service notes
Follow the factory procedure for supporting the vehicle and driveline. Preserve any required shaft orientation marks and identify the exact coupling attachment before disassembly.
Compare the original bolt number and position with the repair instructions. Use the correct specified hardware at each side of the coupling; do not substitute this bolt for WHT005179 or N90846102 merely because they are listed nearby.
Inspect mating threads and the coupling sleeves before starting the bolt by hand. Ensure that the assembly is seated and oriented as prescribed, then follow the required tightening sequence, specification and replacement-hardware instructions.
Do not determine torque from the published bolt dimensions or transfer a value from another chassis or coupling. Use thread treatments only when the relevant procedure specifies them.
Complete the prescribed driveline inspection after installation. This listing supplies one original bolt, rather than the full set of coupling hardware or a replacement flex coupling.
Fitment
| Vehicle | Model years | Engine | Chassis and configuration | Application restrictions |
|---|---|---|---|---|
| Audi S3 | 2015 | 2.0L turbocharged gasoline | 8V sedan, quattro; Original all-wheel-drive coupling arrangement | Specified driveshaft flex-coupling mounting bolt; match the original N10329102 attachment. Do not interchange with WHT005179 or N90846102 bolts at other coupling positions. |
| Audi TT RS | 2019 | 2.5L turbocharged gasoline five-cylinder | 8S Coupe, quattro; Original all-wheel-drive coupling arrangement | Specified driveshaft flex-coupling mounting bolt; match the original N10329102 attachment. Do not interchange with WHT005179 or N90846102 bolts at other coupling positions. |
| Volkswagen Atlas Cross Sport | 2020 | 2.0L turbocharged gasoline | SUV, 4Motion; Original all-wheel-drive coupling arrangement | Specified driveshaft flex-coupling mounting bolt; match the original N10329102 attachment. Do not interchange with WHT005179 or N90846102 bolts at other coupling positions. |
| Volkswagen Atlas Cross Sport | 2021 | 3.6L gasoline VR6 | SUV, 4Motion; Original all-wheel-drive coupling arrangement | Specified driveshaft flex-coupling mounting bolt; match the original N10329102 attachment. Do not interchange with WHT005179 or N90846102 bolts at other coupling positions. |
Confirm the original bolt number and exact coupling position before ordering. One bolt is supplied.