OVERVIEW
Correct M10 hardware for the AEB and ATW oil pan connection
N-102-155-02 is the Genuine VW/Audi M10 x 28 combination bolt used at the assigned oil pan fastening position on the AEB and ATW 1.8T engines. Its head, bearing arrangement and working length match that original connection.
The oil pan assembly uses several different fasteners. Their positions and lengths matter: choosing an adjacent bolt with a similar head can leave insufficient engagement or cause the hardware to bottom before the joint is clamped.
Technical details
- Complete factory number: N-102-155-02.
- Factory specification: M10 x 28 mm.
- Design: hexagon-head combination bolt with bearing washer arrangement.
- Quantity supplied: one individual bolt.
M10 denotes the nominal thread diameter and 28 mm is the catalog bolt length. Keep this bolt assigned to the original matching position; the surrounding oil pan hardware is not interchangeable solely because it belongs to the same assembly.
Common reasons to replace
- The original bolt is missing during oil pan service.
- The threads have been damaged or cross-threaded.
- The hexagon head is rounded or damaged.
- The bearing surface is corroded or deformed.
- The applicable factory procedure specifies new fastening hardware.
Inspect the receiving threads, oil pan and mating surfaces before installation. Replacing the bolt does not repair a cracked pan, damaged thread or sealing-surface problem. Diagnose any oil leak and service the seal separately as required.
Vehicle fitment
The engine code restriction is essential. This is the confirmed AEB/ATW application, with body styles limited to the model years listed.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Audi A4 | 1997–2000 | 1.8L turbocharged gasoline I4; AEB or ATW only | B5 sedan; FWD or quattro; Avant quattro from 1999; Original oil pan attachment | AEB or ATW engine required; excludes AWM and V6 engines. Match the original M10 x 28 fastening position. |
Installation guidance
Follow the factory oil pan procedure, preserving the original fastener layout. Start the bolt by hand and use the specified tightening order and torque for this exact connection. Apply sealant only where and as prescribed for the oil pan repair.
Complete the required sealing and oil-service steps, inspect for leakage and confirm that every removed fastener has returned to its assigned position.
Ordering information
Sold individually as one genuine bolt. Oil pan, seals, sealant, lubricant and other mounting hardware are separate. Confirm engine code, original bolt position and repair quantity.