OVERVIEW
Genuine VW/Audi collared hex bolt, part number N-103-145-06. This original fastener is used at multiple factory assemblies. The table below identifies confirmed starter mounting applications, preserving the exact attachment rather than treating it as universal hardware.
Technical details
- Original part number: N-103-145-06 / N10314506.
- Published nominal size: M10 x 50.
- External hex drive with an integral collar beneath the head.
- Supplied individually; starter, transmission and other mounting hardware are separate.
- The listed applications identify a specified starter attachment. They do not establish fitment for every bolt at that assembly.
The collar forms the contact surface beneath the bolt head. At the cataloged starter position, the correct mounting hardware helps retain the starter in its designed relationship to the engine and transmission assembly.
Match the part number and exact location before ordering. Bolt length, head form and the original joint design matter in addition to nominal diameter. The same vehicle can use different mounting bolts at adjacent starter positions.
Common reasons to replace
Replace a missing bolt, damaged threads, a rounded hex head, visible deformation or corrosion affecting the fastener. Renew mounting hardware whenever the applicable repair procedure requires it after removal.
Starter replacement or related transmission work can expose previously damaged fasteners. Inspect the mating threads, mounting bosses and starter seating surfaces before reassembly, especially when the old hardware was loose or difficult to remove.
A new bolt does not repair a failed starter motor, damaged solenoid, faulty electrical connection or defective mounting boss. Starting concerns and abnormal engagement noises require diagnosis of the complete system.
Installation and service notes
Follow the factory procedure for battery disconnection and safe access to the starter. Confirm the exact mounting position, original bolt number and starter/transmission configuration before ordering. Support the starter and protect its electrical connections during removal and installation.
Ensure the starter is correctly seated before tightening the attachment hardware. Start the correct bolt by hand into undamaged mating threads and follow the prescribed tightening sequence and specification for that joint.
Do not infer torque from the M10 x 50 size or transfer a value from a suspension link or exhaust attachment that may use the same part number. Use thread treatment only when the actual repair procedure specifies it.
If the bolt does not seat normally, inspect the starter position, thread engagement and mating mounting area. Excessive force cannot correct misalignment or damaged threads.
Complete the required electrical reconnection and functional checks after the repair. This listing supplies one original bolt, rather than a complete starter mounting kit.
Fitment
| Vehicle | Model years | Engine | Chassis and configuration | Application restrictions |
|---|---|---|---|---|
| Audi A6 quattro | 2013–2015 | 3.0L supercharged gasoline V6 | C7 sedan, quattro; Match original starter/transmission configuration | Specified starter mounting bolt; match original N10314506 hardware and the actual starter/transmission arrangement. Other starter bolts at the same assembly can have different part numbers. |
| Audi A6 | 2013 | 2.0L turbocharged gasoline | C7 sedan, front-wheel drive; Match original starter/transmission configuration | Specified starter mounting bolt; match original N10314506 hardware and the actual starter/transmission arrangement. Other starter bolts at the same assembly can have different part numbers. |
| Audi A6 | 2015 | 2.0L turbocharged gasoline | C7 sedan, front-wheel drive; Match original starter/transmission configuration | Specified starter mounting bolt; match original N10314506 hardware and the actual starter/transmission arrangement. Other starter bolts at the same assembly can have different part numbers. |
| Audi A5 | 2013 | 2.0L turbocharged gasoline | B8.5 Cabriolet, front-wheel drive; Match original starter/transmission configuration | Specified starter mounting bolt; match original N10314506 hardware and the actual starter/transmission arrangement. Other starter bolts at the same assembly can have different part numbers. |
| Audi A5 quattro | 2013 | 2.0L turbocharged gasoline | B8.5; confirm original body and starter configuration; Match original starter/transmission configuration | Specified starter mounting bolt; match original N10314506 hardware and the actual starter/transmission arrangement. Other starter bolts at the same assembly can have different part numbers. |
| Audi A5 quattro | 2015 | 2.0L turbocharged flex-fuel | B8.5 Prestige; confirm original body and starter configuration; Match original starter/transmission configuration | Specified starter mounting bolt; match original N10314506 hardware and the actual starter/transmission arrangement. Other starter bolts at the same assembly can have different part numbers. |
| Audi S6 | 2013 | 4.0L twin-turbocharged gasoline V8 | C7 sedan, quattro; Match original starter/transmission configuration | Specified starter mounting bolt; match original N10314506 hardware and the actual starter/transmission arrangement. Other starter bolts at the same assembly can have different part numbers. |
| Audi S6 | 2015 | 4.0L twin-turbocharged gasoline V8 | C7 sedan, quattro; Match original starter/transmission configuration | Specified starter mounting bolt; match original N10314506 hardware and the actual starter/transmission arrangement. Other starter bolts at the same assembly can have different part numbers. |
| Audi A7 quattro | 2013 | 3.0L supercharged gasoline V6 | C7 Sportback, quattro; Match original starter/transmission configuration | Specified starter mounting bolt; match original N10314506 hardware and the actual starter/transmission arrangement. Other starter bolts at the same assembly can have different part numbers. |
| Audi A8 L quattro | 2015 | 4.0L twin-turbocharged gasoline V8 | D4 long-wheelbase sedan, quattro; Match original starter/transmission configuration | Specified starter mounting bolt; match original N10314506 hardware and the actual starter/transmission arrangement. Other starter bolts at the same assembly can have different part numbers. |
Confirm the original part number and exact starter attachment before ordering. One bolt is supplied.