2023 Audi S8 Engine Parts

This table covers lower / conversion gasket sets for oil-pan and related joints. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

This group shows a single part: AJUSA 54319300.

This table covers the front and rear seals that keep oil in at the crankshaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

3 Crankshaft Seal parts are listed for the 2023 Audi S8, from AJUSA and MAHLE / CLEVITE.

Part numbers include AJUSA 15088800, AJUSA 15084000 and MAHLE / CLEVITE 67830.

This table covers the bolts that clamp the cylinder head to the block. Read more

This group shows a single part: AJUSA 81081300.

This table covers the head gaskets that seal the block to the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

5 Cylinder Head Gasket parts for the 2023 Audi S8 come from 2 brands — AJUSA and ELRING.

This group includes AJUSA 10258700, AJUSA 10258900 and AJUSA 52597700 and the remaining parts above.

This table covers multi-piece gasket sets for a cylinder-head job. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

This group shows a single part: AJUSA 52597600.

This table covers the Cylinder Head temperature sensors. Typical signs include hard cold starts, a fan that never comes on, or a gauge that disagrees with the scan tool. A sensor that reads open or shorted is usually the part; an implausible-but-smooth reading can be wiring. Read more

One part is listed for the 2023 Audi S8 — STANDARD MOTOR PRODUCTS TS686.

This table covers full gasket kits covering the joints opened in an engine rebuild. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

This group shows a single part: AJUSA 50544800.

This table covers the followers that drive a mechanical fuel pump off the camshaft. Read more

This group shows a single part: ASTEMO / HITACHI HCF3057.

This table covers the gaskets between the intake manifold and the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

This group shows a single part: AJUSA 13326700.

This table covers the engine oils listed by grade and specification for this engine. Typical signs include a low-oil lamp, knocking after a long interval, or oil that has gone thin and black well before the next service. Match the viscosity and spec in the notes (and on the filler cap). The tables group grades — they are not interchangeable. Read more

15 Oil parts are listed for the 2023 Audi S8, from PENTOSIN, LIQUI MOLY, VAICO and 2 other brands. PENTOSIN 8043206 carries the "Popular" badge.

This table covers the seals at the Oil Dipstick / Tube. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

This group shows a single part: FEL-PRO 73668.

This table covers the drain plugs in the oil pan. Read more

REIN supplies both parts for the 2023 Audi S8.

Listed part numbers: REIN HWP1014 and REIN HWU1014.

This table covers the crush washers and gaskets under the oil drain plug. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

4 Oil Drain Plug Gasket parts for the 2023 Audi S8 come from 2 brands — AJUSA and DORMAN.

Listed part numbers: AJUSA 22007000, AJUSA 22018700 and DORMAN 095147, plus the other parts above.

This table covers the caps on the oil filler neck. Read more

One part is listed for the 2023 Audi S8 — MOTORAD MO153.

This table covers the oil filters that screw onto this engine's filter mount. Typical signs include low oil pressure after a service, or a filter that will not spin off because the old gasket stayed on the block. Lube the new gasket and tighten to the spec on the box; a double-gasket install dumps the sump on the first drive. Read more

9 Oil Filter parts are listed for the 2023 Audi S8, from CHAMP / LUBER-FINER, ULTRA-POWER, HENGST and 6 other brands. HENGST E914HD398 carries the "Popular" badge.

In the Economy grade, CHAMP / LUBER-FINER and ULTRA-POWER supply 2 parts: the catalog's value-priced group. A representative part number is CHAMP / LUBER-FINER P1074.

The Standard Replacement section lists 7 options from HENGST, WIX, ACDELCO and 4 other brands — built to original-equipment specification. HENGST E914HD398 is listed in this group.

Listed part numbers: HENGST E914HD398, CHAMP / LUBER-FINER P1074 and ULTRA-POWER WL10438, plus the other parts above.

This table covers the Oil Filter covers. Read more

This group shows a single part: MOTORAD MO374.

This table covers the Oil Filter housings. Read more

This group shows a single part: VAICO V107598.

This table covers the Oil Level sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

One part is listed for the 2023 Audi S8 — VEMO V10720157.

This table covers the Oil Level Sensor Gasket O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove. Read more

One part is listed for the 2023 Audi S8 — AJUSA 01899000.

This table covers the gaskets between the oil pan and the block. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

One part is listed for the 2023 Audi S8 — ELRING 030793.

This table covers the gaskets that seal the Oil Pump. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

This group shows a single part: ELRING 372200.

This table covers the Turbocharger Boost sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

2 Turbocharger Boost Sensor parts for the 2023 Audi S8 come from WELLS.

This group includes WELLS 5S15121 and WELLS 5S15727.

This table covers the Turbocharger Boost solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid. Read more

One part is listed for the 2023 Audi S8 — VEMO V45630009.

This table covers the gaskets that seal the Turbocharger. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

This group shows a single part: AJUSA JTC12655.

This table covers the Turbocharger Oil lines. Typical signs include a wet fitting, a rusted pipe, or a pressure loss in this circuit. Flare or thread the new line the way the notes specify; a kinked replacement will fail early. Read more

AJUSA supplies both parts for the 2023 Audi S8.

This group includes AJUSA OP11361 and AJUSA OP11430.

This table covers the gaskets that seal the valve cover to the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

AJUSA supplies both parts for the 2023 Audi S8.

This group includes AJUSA 11171600 and AJUSA 11171700.

This table covers the lifters / tappets that transfer cam motion to the valves. Read more

One part is listed for the 2023 Audi S8 — AJUSA 85009000.

This table covers the keepers that lock each valve-spring retainer to the stem. Read more

This group shows a single part: MELLING VL1098.

This table covers the seals on each valve stem that control oil into the guides. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

5 Valve Stem Seal parts are listed for the 2023 Audi S8, from AJUSA and MAHLE / CLEVITE. MAHLE / CLEVITE SS45940A carries the "Popular" badge.

Listed part numbers: MAHLE / CLEVITE SS45940A, AJUSA 12021100 and AJUSA 12035500, plus the other parts above.

This table covers the oil-control solenoids that command the cam phasers. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same. Read more

2 Variable Valve Timing (VVT) Solenoid / Actuator parts are listed for the 2023 Audi S8, from STANDARD MOTOR PRODUCTS and VNE.

Listed part numbers: STANDARD MOTOR PRODUCTS VVT473 and VNE 4022007.