OVERVIEW
Genuine VW/Audi turbo oil-supply line O-ring, part number N-910-568-01. This original sealing ring seals the assigned oil-supply pipe connection at the turbocharger arrangement on the configuration below. One O-ring is supplied.
Technical details
- Original number: N-910-568-01 / N91056801.
- Published nominal seal size: 12 x 2 mm.
- Circular O-ring profile for its specified connection.
- Assigned application: turbocharger oil-supply pipe seal.
- Oil line, turbocharger, retaining hardware and other seals are separate.
The ring forms the sealing interface between the oil pipe and its assigned connection. The correct size and seating arrangement are necessary to contain oil at that joint. Select by the original number and actual pipe connection, rather than by appearance alone.
This is a connection seal, not an oil-pressure regulator, pipe assembly or complete turbo installation kit. Other seals in the turbocharger oil circuit can have different sizes and functions and must be selected separately.
Common reasons to replace
Inspect and renew the seal as required when disconnecting the assigned oil-supply line during turbocharger or oil-pipe service. A removed ring may be damaged during disassembly even when the adjoining pipe can be reused.
Replace a cut, flattened, distorted, hardened or otherwise damaged seal. Earlier repairs may leave an incorrect ring or an improperly seated connection. Compare the original number and inspect the seal groove and mating surfaces before assembly.
Oil seepage at the line requires diagnosis of the complete connection and surrounding components. A new O-ring cannot repair a cracked pipe, damaged sealing bore, distorted fitting or leak from another joint. Repair the diagnosed defect before completing the connection.
Turbocharger noise, oil consumption or performance changes require diagnosis of the turbocharger, lubrication system and engine. Replacing this seal alone does not correct internal turbo wear, restricted oil supply or an unrelated engine fault.
Installation and service notes
Follow the factory turbocharger oil-line procedure for the exact engine and connection. Perform the required access and fluid handling steps, and protect open oil passages from contamination during service.
Remove the old seal using a method that does not scratch the pipe or mating bore. Inspect the groove, fitting and line for damage, deposits or deformation. Use the specified cleaning method and keep debris out of the oil circuit.
Fit the new ring at its assigned sealing position. Apply only the assembly lubricant specified by the repair procedure. Do not stretch, twist, cut or pinch the ring while joining the components.
Position the oil line correctly and install its prescribed retaining hardware. Follow the factory tightening requirements and any fastener replacement instructions for the complete connection. Do not use a bolt or bracket to force a misaligned line into place.
If the pipe does not seat normally, inspect seal selection, ring placement and fitting alignment before continuing. Additional tightening force cannot correct an incompatible ring or damaged sealing bore.
Complete the required lubrication-system checks and turbocharger service steps before operation. Inspect the serviced joint for leakage and verify oil level according to the vehicle procedure. This listing supplies one original O-ring; select the remaining oil-line seals and service components separately.
Fitment
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Audi S6 | 2013 | 4.0L twin-turbocharged gasoline V8 | C7 sedan, quattro; 7-speed S tronic | Original turbocharger oil-supply pipe seal position requiring N91056801. Match actual oil inlet tube and connection. One O-ring supplied; other seals and line components separate. |
Confirm original N91056801 at the specified turbo oil-supply connection before ordering. One seal supplied.