OVERVIEW
Factory 33 mm cup plug for the assigned engine-block opening
N-909-829-02 is the Genuine VW/Audi 33 mm engine block sealing plug for the original opening identified below. Its formed cup shape seats in the machined block opening using the specified factory installation method.
The sealing edge and receiving bore work together. Damage to either surface can cause leakage, and a cap with a similar diameter may still have a different shape or seating requirement.
Technical details
- Complete factory number: N-909-829-02.
- Factory specification: 33 mm nominal size; factory standard DIN44; coating designation R642.
- Design: formed metal cup-type sealing plug.
- Quantity supplied: one individual sealing plug.
The 33 mm measurement is the nominal functional size. Match the complete factory number and original plug location. The cap is also listed as the service replacement for N-909-829-01.
Common reasons to replace
- Leakage has been traced to the assigned block-plug opening.
- The plug is corroded, perforated or distorted.
- The original cap was removed during engine service.
- Damage to the sealing edge prevents reliable seating.
Inspect the bore for corrosion, scoring and distortion before installing a replacement. Determine the cause of any leakage and correct damage to the receiving surface independently of the plug.
Vehicle fitment
The table identifies a confirmed engine-block application. Verify the original 33 mm plug position and factory number on the engine being repaired.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Audi Q3 | 2015 | 2.0L turbocharged gasoline I4 | 8U; front-wheel drive or quattro; Original 33 mm cylinder-block sealing-plug position | Match the original N90982902 / replaced N90982901 block-cap position; not a substitute for other engine caps. |
Installation guidance
Use the factory engine repair procedure and an appropriate installation driver. Prepare the receiving bore, observe the specified seating depth and apply sealing compound only where the procedure requires it.
Check that the plug sits squarely and remains undamaged. Restore any drained fluid and carry out the leak test required for the repaired engine passage before returning the vehicle to service.
Ordering information
Sold individually as one genuine plug. Engine block, other caps, fluid and installation materials are separate. Confirm the exact original opening and repair quantity.