OVERVIEW
Fine-thread collared hardware for the assigned factory connection
N-911-038-02 is the Genuine VW/Audi M12 x 1.5 x 50 collared bolt used at the specific mounting connections below. Applications include selected Q7 rear bumper carrier attachments and the listed A8 L front anti-roll-bar coupling-rod connection.
The factory uses this hardware at more than one type of joint. The required tightening procedure, mating hardware and replacement policy depend on the actual mounting point, so identify the connection before starting the repair.
Technical details
- Complete factory number: N-911-038-02.
- Factory specification: M12 x 1.5 x 50 mm.
- Design: external hexagon head with integral bearing collar.
- Quantity supplied: one individual bolt.
M12 is the nominal diameter, 1.5 mm is the fine thread pitch and 50 mm is the nominal length. The collar and working length must match the original connection; a different M12 bolt is not automatically a suitable substitute.
Common reasons to replace
- The factory repair procedure requires a new bolt after removal.
- The threads or hexagon head are damaged.
- Corrosion affects the bearing surface or threaded section.
- The previous repair used hardware with the wrong pitch or length.
Inspect the mating receiver, bracket and connected component. Any impact damage, distorted mounting surface or worn suspension joint needs its own repair; new fastening hardware alone cannot restore those parts.
Vehicle fitment
The connection, VIN and equipment restrictions below are part of fitment. This listing supplies only the individual bolt.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Audi Q7 | 2007–2008 | 3.6L FSI V6; 4.2L FSI V8 | 4L quattro; PR 2K8 reinforced bumper configuration; Assigned rear bumper carrier attachment | VIN from 4L-7-067198; PR 2K8 required for this catalog branch. |
| Audi Q7 | 2013–2014 | 3.0L supercharged gasoline V6; 3.0L TDI diesel V6 | 4L quattro; Assigned rear bumper carrier attachment | Original M12 x 1.5 x 50 rear carrier bolt position only. |
| Audi A8 L | 2011 | 4.2L FSI gasoline V8 | D4 quattro; Front axle anti-roll-bar coupling-rod attachment | Match the original coupling-rod bolt position; not interchangeable with other axle bolts. |
Installation guidance
Use the vehicle-specific procedure for the mounting point being serviced. Support the connected components as prescribed, replace required mating hardware and follow the correct torque and angle sequence for that joint.
Verify full seating and secure attachment. For suspension work, complete the required functional and alignment checks; for carrier work, inspect the surrounding mounts and restore the original assembly layout.
Ordering information
One genuine bolt supplied. Bumper carrier, suspension links, mating nuts and other components are separate. Confirm the factory number, connection, VIN and repair quantity.