OVERVIEW
Genuine coolant-pipe drain-plug seal
The N-013-811-4 Genuine VW/Audi sealing ring serves the specified Touareg coolant-pipe drain-plug connection and the assigned Audi water-pipe sealing joints listed below. One individual ring is supplied.
The Touareg entry requires the BAR 4.2L FSI engine. The Audi entries describe separate original water-pipe sealing points within the oil-filter/cooler arrangement. Match the full factory number and actual joint rather than selecting by approximate ring appearance.
Technical details
- Complete factory number: N-013-811-4.
- Nominal catalog size: 10 × 13.5 mm.
- Type: sealing washer/ring as shown in the archive photograph.
- Quantity supplied: one individual sealing ring.
The catalog size describes the component's nominal opening and outside diameter. It is not a shipping measurement. Match the exact part number and sealing joint; a conventional fastening washer or a similarly sized rubber O-ring does not necessarily provide the required sealing arrangement.
Common reasons to replace
- The original sealing ring has been disturbed during service of the assigned connection.
- The sealing faces are damaged, scored or visibly deformed.
- The ring is missing or an incorrect substitute was installed previously.
- Inspection of a leak at the assigned joint identifies damaged sealing hardware.
Inspect the plug or fastener, receiving threads and mating sealing surface before assembly. A new ring cannot repair a cracked component, damaged seat or stripped thread. Confirm the actual source of any leak before replacing parts, and follow the factory replacement requirements for sealing components disturbed during the repair.
Vehicle fitment
Match the vehicle, engine and assigned sealing point. The Touareg row excludes the earlier AXQ engine, and the Audi rows do not describe a general oil-drain-plug seal.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Volkswagen Touareg | 2007–2009 | 4.2L BAR FSI gasoline V8 | 7L SUV; 4Motion; original front coolant-pipe drain plug; 6-speed automatic | BAR engine only. Assigned N0160243 M10×1 drain-plug seal at the original coolant pipe. One ring supplied; plug not included. |
| Audi A8 | 2001–2002 | 4.2L naturally aspirated gasoline V8 | D2 sedan, quattro, standard wheelbase; 5-speed automatic | Assigned original water-pipe sealing joint in the oil-filter/cooler assembly specifying N-013-811-4. Confirm the exact sealing point; not a blanket oil-drain-plug or all coolant-joint fitment. |
| Audi A8 L | 2001–2002 | 4.2L naturally aspirated gasoline V8 | D2 sedan, quattro, long wheelbase; 5-speed automatic | Assigned original water-pipe sealing joint in the oil-filter/cooler assembly specifying N-013-811-4. Confirm the exact sealing point; not a blanket oil-drain-plug or all coolant-joint fitment. |
| Audi S8 | 2001 | 4.2L naturally aspirated gasoline V8 | D2 sedan, quattro; 5-speed automatic | Original assigned water-pipe sealing joint within the oil-filter/cooler arrangement requiring N-013-811-4. Confirm the original complete number and actual sealing location. |
Installation guidance
Follow the factory cooling-system drain and refill procedure for the vehicle. Allow the system to cool and release pressure as prescribed before opening the connection. Keep the correct plug and sealing-ring position identified during disassembly.
Clean and inspect the intended sealing surfaces using the prescribed service method. Install the specified ring in the correct original position and engage the associated plug or fastener carefully. Follow the factory tightening instruction for the exact joint rather than using extra torque to compensate for damaged sealing surfaces.
Refill and bleed the cooling system using the factory procedure, then carry out the specified operating and leak checks at the repaired connection.
Ordering information
Supplied as one genuine sealing ring. Plug, bolt, pipe, control assembly, fluids and a complete repair kit are not included. Confirm the quantity needed for the specific connection being serviced.