2020 Audi A4 Engine Parts

This table covers the chains that drive the balance shafts. Read more

2 Balance Shaft Chain parts are listed for the 2020 Audi A4, from CLOYES and PREFERRED COMPONENTS INC.

Part numbers include CLOYES C740 and PREFERRED COMPONENTS INC C796.

This table covers the guides that keep the balance-shaft chain on its path. Read more

6 Balance Shaft Chain Guide parts are listed for the 2020 Audi A4, from PREFERRED COMPONENTS INC and CLOYES. PREFERRED COMPONENTS INC R76272 carries the "Popular" badge.

Listed part numbers: PREFERRED COMPONENTS INC R76272, PREFERRED COMPONENTS INC T64204 and CLOYES 95704, plus the other parts above.

This table covers the Balance Shaft Chain tensioners. Typical signs include belt flutter, a chirp that returns after a new belt, or an arm that no longer damps. Replace the tensioner with the belt at higher mileage. Read more

2 Balance Shaft Chain Tensioner parts for the 2020 Audi A4 come from 2 brands — CLOYES and PREFERRED COMPONENTS INC.

Part numbers include CLOYES 95705 and PREFERRED COMPONENTS INC T64207.

This table covers the seals at the Balance Shaft. 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

One part is listed for the 2020 Audi A4 — MAHLE / CLEVITE 68079.

This table covers the Balance Shaft sprockets. Read more

One part is listed for the 2020 Audi A4 — CLOYES S986.

This table covers the bearings in the connecting-rod big ends. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

KING ENGINE BEARINGS supplies both parts for the 2020 Audi A4.

This group includes KING ENGINE BEARINGS CR4637SV and KING ENGINE BEARINGS CR4637GPC.

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

3 Conversion / Lower Gasket Set parts are listed for the 2020 Audi A4, from AJUSA, ENGINETECH and VICTOR REINZ.

This group includes AJUSA 54262400, ENGINETECH AU20CSA and VICTOR REINZ 081004101.

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

15 Crankshaft Seal parts for the 2020 Audi A4 come from 9 brands — VICTOR REINZ, FEL-PRO, NATIONAL and 6 other brands. The "Popular" part is FEL-PRO TCS46138.

This table covers the Crankshaft Seal covers. Read more

One part is listed for the 2020 Audi A4 — DORMAN 635696.

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

3 Cylinder Head Bolt parts are listed for the 2020 Audi A4, from AJUSA, TOPLINE and VICTOR REINZ.

This group includes AJUSA 81054400, TOPLINE HBVW17L and VICTOR REINZ 141966401.

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

6 Cylinder Head Gasket parts are listed for the 2020 Audi A4, from APEX, MAHLE / CLEVITE, AJUSA and 3 other brands. APEX AHG947 carries the "Popular" badge.

Part numbers include APEX AHG947, MAHLE / CLEVITE 55345 and AJUSA 10202800, among others listed 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

5 Cylinder Head Gasket Set parts are listed for the 2020 Audi A4, from AJUSA, VICTOR REINZ and MAHLE / CLEVITE. MAHLE / CLEVITE HS55345 carries the "Popular" badge.

Part numbers include MAHLE / CLEVITE HS55345, AJUSA 52502400 and AJUSA 52505500, among others listed above.

This table covers the Engine covers. Read more

TECHPRO supplies the 3 Engine Cover parts for the 2020 Audi A4.

Part numbers include TECHPRO AU1228145, TECHPRO AU1228137 and TECHPRO AU1228141.

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

AJUSA supplies both parts for the 2020 Audi A4.

Part numbers include AJUSA 50451400 and AJUSA 50455100.

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

2 Fuel Pump Camshaft Follower parts are listed for the 2020 Audi A4, from ASTEMO / HITACHI and VEMO.

Listed part numbers: ASTEMO / HITACHI HCF3057 and VEMO V10250019.

This table covers the crankshaft pulleys / harmonic balancers at the front of the engine. Read more

4 Harmonic Balancer parts are listed for the 2020 Audi A4, from SKP, ATP, DAYCO and 1 other brand.

In the Economy grade, SKP supplies 1 part: the catalog's value-priced group. A representative part number is SKP SK594752.

The Standard Replacement section lists 3 options from ATP, DAYCO and ULTRA-POWER — built to original-equipment specification. ATP 102437 is listed in this group.

Listed part numbers: SKP SK594752, ATP 102437 and DAYCO PB1721N, plus the other parts above.

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

7 Intake Manifold Gasket parts are listed for the 2020 Audi A4, from VICTOR REINZ, AJUSA, FEL-PRO and 2 other brands. FEL-PRO MS97518 carries the "Popular" badge.

This group includes FEL-PRO MS97518, VICTOR REINZ 714278600 and AJUSA 13245500 and the remaining parts above.

This table covers the Intake Manifold Runner Control Valve 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 2020 Audi A4 — PIERBURG 702256180.

This table covers the mounts that hold the engine to the chassis. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

10 Motor Mount parts for the 2020 Audi A4 come from 5 brands — SKP, ANCHOR, DEA / MARMON RIDE CONTROL and 2 other brands. The "Popular" part is SKP SK10216.

The Economy section: 2 options from SKP. SKP SK10216 is listed in this group.

Standard Replacement: 8 parts, from ANCHOR, DEA / MARMON RIDE CONTROL, PIONEER and 1 other brand. A representative part number is ANCHOR 10215.

This table covers the Motor Mount kits. Read more

This group shows a single part: ANCHOR 300966.

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

20 Oil parts for the 2020 Audi A4 come from 5 brands — PENTOSIN, LIQUI MOLY, MOBIL and 2 other brands. The "Popular" part is LIQUI MOLY 20238.

This table covers the heat exchangers that cool engine oil. Typical signs include oil at the cooler fittings, or coolant that looks like a milkshake. Pressure-test both circuits after a cooler swap — a leak here mixes oil and coolant. Read more

3 Oil Cooler parts for the 2020 Audi A4 come from 3 brands — DORMAN, HELLA and NISSENS.

This group includes DORMAN 918985, HELLA 366360581 and NISSENS 90914.

This table covers the gaskets that seal the Oil Cooler. 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

2 Oil Cooler Gasket parts are listed for the 2020 Audi A4, from FEL-PRO and MAHLE / CLEVITE.

This group includes FEL-PRO 73305 and MAHLE / CLEVITE B33478.

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

3 Oil Drain Plug parts for the 2020 Audi A4 come from 3 brands — DORMAN, REIN and ÜRO PARTS.

Part numbers include DORMAN 090090, REIN HWP0043 and ÜRO PARTS 06L103801PRM.

This table covers the Oil Drain Plug Removal tools. This is a service tool, not a wear part — match the application in the notes. Read more

This group shows a single part: DORMAN 090999.

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

This group shows a single part: REIN CPL0046.

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

16 Oil Filter parts for the 2020 Audi A4 come from 14 brands — PRO-TEC, WIX, CHAMP / LUBER-FINER and 11 other brands. The "Popular" part is WIX WL10396XP.

The Economy section: 5 options from PRO-TEC, CHAMP / LUBER-FINER, FRAM and 1 other brand. CHAMP / LUBER-FINER P1078 is listed in this group.

The High Performance / Heavy Duty section lists 2 options from WIX and MOBIL — grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. WIX WL10396XP is listed in this group.

Standard Replacement: 9 parts, from HENGST, MANN, WIX and 6 other brands. A representative part number is HENGST E358H03D246.

This table covers the Oil Filter Adapter 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

2 Oil Filter Adapter Gasket / O-Ring parts are listed for the 2020 Audi A4, from FEL-PRO and MAHLE / CLEVITE.

Listed part numbers: FEL-PRO 76367 and MAHLE / CLEVITE B33479.

This table covers the Oil Filter covers. Read more

5 Oil Filter Cover parts are listed for the 2020 Audi A4, from VAICO, DORMAN, MOTORAD and 1 other brand. DORMAN 921169 carries the "Popular" badge.

Listed part numbers: DORMAN 921169, MOTORAD MO319 and ÜRO PARTS 06L115401LPRM, plus the other parts above.

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

This group shows a single part: VEMO V10720479.

This table covers the oil pans that hold the engine's oil sump. Read more

4 Oil Pan parts are listed for the 2020 Audi A4, from DORMAN, REIN, SPECTRA PREMIUM and 1 other brand.

Part numbers include DORMAN 264553, REIN ESK0240 and SPECTRA PREMIUM VWP60A, among others listed above.

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

5 Oil Pan Gasket parts for the 2020 Audi A4 come from 3 brands — VICTOR REINZ, AJUSA and ELRING. The "Popular" part is VICTOR REINZ 703141410.

This group includes VICTOR REINZ 703141410, AJUSA 16063100 and AJUSA 59016300 and the remaining parts above.

This table covers the chains that drive the oil pump. Read more

5 Oil Pump Chain parts are listed for the 2020 Audi A4, from VAICO, PREFERRED COMPONENTS INC and CLOYES. CLOYES C741 carries the "Popular" badge.

Economy: 1 part, from PREFERRED COMPONENTS INC. A representative part number is PREFERRED COMPONENTS INC C760.

In the Kit grade, VAICO supplies 3 parts: grouped under the catalog's "Kit" designation — the notes column spells out what sets them apart. A representative part number is VAICO V105855.

The Standard Replacement section: 1 option from CLOYES. CLOYES C741 is listed in this group.

Part numbers include CLOYES C741, PREFERRED COMPONENTS INC C760 and VAICO V105855, among others listed above.

This table covers the Oil Pump Chain tensioners. Typical signs include belt flutter, a chirp that returns after a new belt, or an arm that no longer damps. Replace the tensioner with the belt at higher mileage. Read more

2 Oil Pump Chain Tensioner parts for the 2020 Audi A4 come from 2 brands — CLOYES and INA.

This group includes CLOYES 96058 and INA ZT0273.

This table covers the Oil Pump Control Valve 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

2 Oil Pump Control Valve / Solenoid parts are listed for the 2020 Audi A4, from DORMAN and GATES.

Part numbers include DORMAN 916880 and GATES VVS263.

This table covers the Oil Temperature senders. Read more

One part is listed for the 2020 Audi A4 — VEMO V10720210.

This table covers the rocker arms that transfer cam motion to the valves. Read more

2 Rocker Arm parts for the 2020 Audi A4 come from 2 brands — INA and MELLING.

Part numbers include INA VF0079 and MELLING MR1349.

This table covers the Timing belts. Typical signs include squeal on cold start, cracked ribs, or glazing. Spin the tensioner and idlers by hand while the belt is off. Read more

One part is listed for the 2020 Audi A4 — DAYCO 95352.

This table covers the Timing Belt & component kits. Read more

This group shows a single part: GMB 34800923.

This table covers the timing chains that keep the cams in time with the crank. Read more

3 Timing Chain parts are listed for the 2020 Audi A4, from CLOYES, PREFERRED COMPONENTS INC and VAICO.

This group includes CLOYES C739, PREFERRED COMPONENTS INC C7171 and VAICO V104455.

This table covers kits that group a timing chain with the related tensioners and guides. Read more

6 Timing Chain & Component Kit parts for the 2020 Audi A4 come from 3 brands — VAICO, CLOYES and ULTRA-POWER. The "Popular" part is CLOYES 90739SGX.

The Economy section: 1 option from ULTRA-POWER. ULTRA-POWER 90739SG is listed in this group.

Standard Replacement: 5 parts, from VAICO and CLOYES. A representative part number is CLOYES 90739SGX.

Part numbers include CLOYES 90739SGX and ULTRA-POWER 90739SG, among others listed above.

This table covers the guides and dampers that keep the timing chain on its path. Read more

5 Timing Chain Guide / Damper parts are listed for the 2020 Audi A4, from CLOYES, ÜRO PARTS and PREFERRED COMPONENTS INC. ÜRO PARTS 06H109509Q carries the "Popular" badge.

Part numbers include ÜRO PARTS 06H109509Q, CLOYES 95800 and CLOYES 95801, among others listed above.

This table covers the tensioners that keep the timing chain taut. Typical signs include belt flutter, a chirp that returns after a new belt, or an arm that no longer damps. Replace the tensioner with the belt at higher mileage. Read more

3 Timing Chain Tensioner parts for the 2020 Audi A4 come from 3 brands — CLOYES, PREFERRED COMPONENTS INC and ÜRO PARTS.

This group includes CLOYES 95699, PREFERRED COMPONENTS INC T64206 and ÜRO PARTS 06K109467K.

This table covers the Timing covers. Read more

5 Timing Cover parts are listed for the 2020 Audi A4, from ÜRO PARTS, REIN and DORMAN. ÜRO PARTS 06K109210AF carries the "Popular" badge.

Listed part numbers: ÜRO PARTS 06K109210AF, DORMAN 635144 and REIN TCV0137, plus the other parts above.

This table covers the gaskets that seal the Timing Cover. 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 Timing Cover Gasket parts for the 2020 Audi A4 come from 2 brands — FEL-PRO and MAHLE / CLEVITE.

This group includes FEL-PRO TCS46318, FEL-PRO TCS46291 and MAHLE / CLEVITE B33357 and the remaining parts above.

This table covers the seals at the Timing Cover. 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

2 Timing Cover Seal parts for the 2020 Audi A4 come from 2 brands — FEL-PRO and SKF.

Listed part numbers: FEL-PRO TCS46292 and SKF 17708.

This table covers the crankshaft sprockets that drive the timing chain or belt. Read more

3 Timing Crank Sprocket parts for the 2020 Audi A4 come from 3 brands — CLOYES, PREFERRED COMPONENTS INC and ÜRO PARTS.

Listed part numbers: CLOYES S997, PREFERRED COMPONENTS INC G56385 and ÜRO PARTS 06H105209AT.

This table covers the Torque Strut mounts. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

ANCHOR supplies both parts for the 2020 Audi A4.

This group includes ANCHOR 10332 and ANCHOR 10333.

This table covers the turbochargers that compress intake air. Read more

6 Turbocharger parts for the 2020 Audi A4 come from 3 brands — GPD, ROTOMASTER and VNE. The "Popular" part is GPD 2511793.

Listed part numbers: GPD 2511793, GPD 2511804 and GPD 2511762, plus the other parts above.

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

One part is listed for the 2020 Audi A4 — WELLS 5S13477.

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

This group shows a single part: ÜRO PARTS 06H906283J.

This table covers the Turbocharger Coolant 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

2 Turbocharger Coolant Line parts for the 2020 Audi A4 come from REIN.

This group includes REIN CHT0948 and REIN CHT0949.

This table covers the Turbocharger Diverter / Bypass valves. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

5 Turbocharger Diverter / Bypass Valve parts for the 2020 Audi A4 come from 5 brands — SKP, DORMAN, PIERBURG and 2 other brands. The "Popular" part is SKP SK911240.

Listed part numbers: SKP SK911240, DORMAN 911240 and PIERBURG 702901050, plus the other parts above.

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

5 Turbocharger Gasket parts are listed for the 2020 Audi A4, from FEL-PRO, GPD and MAHLE / CLEVITE. FEL-PRO 73112 carries the "Popular" badge.

This group includes FEL-PRO 73112, FEL-PRO 61924 and FEL-PRO 61458 and the remaining parts above.

This table covers the fasteners that mount the turbocharger. Read more

One part is listed for the 2020 Audi A4 — VICTOR REINZ 041036301.

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

3 Turbocharger Oil Line parts for the 2020 Audi A4 come from 2 brands — REIN and AJUSA.

Listed part numbers: AJUSA OP10642, REIN TFP0387 and REIN TRP0399.

This table covers the Turbocharger Wastegate Solenoid actuators. 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

This group shows a single part: SKP SK145874.

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

This group shows a single part: VICTOR REINZ 703141410.

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

6 Valve Lifter parts for the 2020 Audi A4 come from 5 brands — AJUSA, MELLING, ENGINETECH and 2 other brands. The "Popular" part is AJUSA 85009000.

Part numbers include AJUSA 85009000, MELLING JB7532 and AJUSA 85022200, among others listed above.

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

3 Valve Spring Retainer Keeper parts are listed for the 2020 Audi A4, from MELLING, QUALCAST and SBI.

Listed part numbers: MELLING VL1098, QUALCAST 345021 and SBI 1211098.

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

6 Valve Stem Seal parts for the 2020 Audi A4 come from 3 brands — MAHLE / CLEVITE, AJUSA and VICTOR REINZ. The "Popular" part is MAHLE / CLEVITE SS45940A.

This group includes MAHLE / CLEVITE SS45940A, VICTOR REINZ 121160802 and AJUSA 12035500 and the remaining 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

10 Variable Valve Timing (VVT) Solenoid / Actuator parts for the 2020 Audi A4 come from 8 brands — HOLSTEIN, STANDARD MOTOR PRODUCTS, ÜRO PARTS and 5 other brands. The "Popular" part is ÜRO PARTS 06L109259D.

The Economy section: 6 options from HOLSTEIN, ÜRO PARTS, DORMAN and 2 other brands. ÜRO PARTS 06L109259D is listed in this group.

Standard Replacement: 4 parts, from STANDARD MOTOR PRODUCTS, PIERBURG and VAICO. A representative part number is PIERBURG 706117260.