OVERVIEW
Factory sealing cap for the assigned cylinder-head opening
N-102-186-01 is the Genuine VW/Audi 15 mm sealing cap used at the specified cylinder-head opening on the engines below. The cap closes its assigned machined opening as part of the original engine assembly.
Cylinder heads use several caps with different diameters and sealing arrangements. Confirm the original part number and opening before selecting a replacement; a neighboring cap in the same diagram may serve a different location.
Technical details
- Complete factory number: N-102-186-01.
- Factory specification: 15 mm nominal catalog size.
- Design: formed sealing cap for the original cylinder-head opening.
- Quantity supplied: one individual sealing cap.
The 15 mm designation is the functional catalog size. Match the cap to the original machined opening and use the factory installation method for the exact engine.
Common reasons to replace
- The original cap is missing during cylinder-head service.
- The cap is distorted or damaged during removal.
- A leak has been traced to the assigned capped opening.
- The factory repair procedure requires a new cap after removal.
Inspect the receiving bore and surrounding cylinder-head material. A damaged or corroded seating surface may need repair independently of the replacement cap. Establish the source of leakage before disassembly.
Vehicle fitment
The engine and PR-code restrictions below are part of fitment. Match the original 15 mm sealing-cap position on the installed cylinder head.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Audi TT | 2008 | 3.2L gasoline VR6; PR D6D | 8J Coupe and Roadster; quattro; Original cylinder-head sealing-cap position | 3.2L VR6 cylinder-head application only; original 15 mm cap position. |
| Audi A8 L | 2008 | 6.0L gasoline W12; PR D0T | D3 long-wheelbase sedan; quattro; Original cylinder-head sealing-cap position | W12 cylinder-head application only; original 15 mm cap position. |
| Volkswagen Jetta | 2004 | 2.8L 24-valve gasoline VR6; PR MR0 | Mk4 sedan; Original cylinder-head sealing-cap position | 24-valve VR6 application only; original 15 mm cap position. |
Installation guidance
Follow the factory procedure for the specific engine. Clean and inspect the opening, use the prescribed installation driver and observe the specified seating depth. Apply sealing compound only when the procedure explicitly requires it.
Check that the cap is evenly seated and undamaged. Complete the required engine reassembly and inspect the repaired location for leakage after service.
Ordering information
Sold individually as one genuine sealing cap. Cylinder head, other caps, sealants and installation tools are separate. Confirm the engine, original opening and quantity required.