OVERVIEW
Factory collared bolt for the original oil sump attachment
N-900-084-01 is the Genuine VW/Audi M6 x 14 hex collared bolt used at the oil sump mounting position shown below. The collar provides the original bearing arrangement beneath the bolt head.
Oil sump service often involves several bolt lengths and mounting details. Keeping the correct hardware at each position helps the joint clamp as intended while avoiding a bolt that bottoms before it seats.
Technical details
- Complete factory number: N-900-084-01.
- Factory specification: M6 x 14 mm.
- Design: hexagon head with collared bearing surface.
- Quantity supplied: one individual bolt.
M6 is the nominal thread diameter and 14 mm is the factory bolt length. Match the complete factory number, original sump configuration and exact fastening location when replacing individual hardware.
Common reasons to replace
- The original fastener is missing after sump removal.
- The thread is damaged or cross-threaded.
- The hexagon head is rounded or damaged.
- The bearing collar is distorted or corroded.
- The applicable repair procedure requires new hardware.
Inspect the pan flange and receiving threads before assembly. A new bolt cannot correct a cracked sump, distorted flange or damaged engine-side thread. Investigate leaks and replace the specified sealing parts independently.
Vehicle fitment
The table contains confirmed oil sump applications. Match the listed engine and original attachment; the bolt is not universal across every position on these vehicles.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Audi 5000 Turbo | 1980 | 2.1L turbocharged gasoline I5 | Sedan; original oil sump assembly; Factory oil sump mounting position | Use only at the original M6 x 14 sump attachment assigned this part number. |
| Volkswagen Quantum | 1988 | 2.2L gasoline I5 | syncro wagon; original oil sump assembly; Factory oil sump mounting position | syncro five-cylinder application; match original sump fastening position. |
Installation guidance
Use the factory oil sump repair procedure, preserving the fastener layout. Clean and inspect the mating surfaces, start the bolt by hand and follow the specified tightening sequence and torque for the connection.
Complete the prescribed seal curing and oil-service steps where applicable, then check the repaired sump for leakage. Avoid excess tightening that can distort the mounting flange.
Ordering information
Sold individually as one genuine bolt. Sump, gasket, sealant, oil and remaining hardware are separate. Order the number of bolts required for the actual repair.