2020 Toyota Avalon Engine Parts

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

3 Connecting Rod Bearing parts for the 2020 Toyota Avalon come from 2 brands — TOPLINE and ENGINETECH.

Part numbers include ENGINETECH BB1035, TOPLINE RBTO59 and TOPLINE RBTO49.

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

4 Conversion / Lower Gasket Set parts for the 2020 Toyota Avalon come from 2 brands — AJUSA and TOPLINE.

This group includes AJUSA 54307700, AJUSA 54318100 and TOPLINE CBSTO59 and the remaining parts above.

This table covers the main bearings that support the crankshaft in the block. 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

5 Crankshaft Main Bearing parts are listed for the 2020 Toyota Avalon, from TOPLINE and MAHLE / CLEVITE.

Listed part numbers: MAHLE / CLEVITE MS2357A, TOPLINE TWTO59 and TOPLINE MBTO59, plus the other parts above.

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

14 Crankshaft Seal parts are listed for the 2020 Toyota Avalon, from AJUSA, VICTOR REINZ, FEL-PRO and 6 other brands. NATIONAL 2025 carries the "Popular" badge.

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

8 Cylinder Head Bolt parts for the 2020 Toyota Avalon come from 5 brands — VICTOR REINZ, TOPLINE, FEL-PRO and 2 other brands. The "Popular" part is FEL-PRO ES72249.

Listed part numbers: FEL-PRO ES72249, AJUSA 81078800 and APEX AHB871, plus the other parts above.

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

13 Cylinder Head Gasket parts for the 2020 Toyota Avalon come from 5 brands — AJUSA, APEX, FEL-PRO and 2 other brands. The "Popular" part is APEX AHG890L.

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

6 Cylinder Head Gasket Set parts for the 2020 Toyota Avalon come from 3 brands — AJUSA, MAHLE / CLEVITE and TOPLINE.

This group includes AJUSA 52570500, AJUSA 52528100 and MAHLE / CLEVITE HS55502A and the remaining parts above.

This table covers the Engine covers. Read more

11 Engine Cover parts for the 2020 Toyota Avalon come from 2 brands — TECHPRO and VARIOUS MFR. The "Popular" part is TECHPRO TO1228292. 3 parts fit every engine; the other 8 are engine-specific.

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

4 Engine Kit Gasket Set parts for the 2020 Toyota Avalon come from 2 brands — AJUSA and TOPLINE.

This group includes AJUSA 50522800, AJUSA 50542400 and TOPLINE CGSTO59 and the remaining parts above.

This table covers the exhaust valves that let combustion gas out of the cylinder. 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 Exhaust Valve parts are listed for the 2020 Toyota Avalon, from MELLING, TOPLINE and SBI.

Part numbers include MELLING V5831, MELLING V3087 and SBI 13087, among others listed above.

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

This group shows a single part: WELLS 5T5023.

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

4 Harmonic Balancer parts for the 2020 Toyota Avalon come from 2 brands — ATP and PIONEER.

Listed part numbers: ATP 102224, ATP 102031 and PIONEER DA2224, 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

8 Intake Manifold Gasket parts for the 2020 Toyota Avalon come from 5 brands — AJUSA, MAHLE / CLEVITE, VICTOR REINZ and 2 other brands.

Listed part numbers: AJUSA 13316900, AJUSA 13255600 and BECK/ARNLEY 0376251, plus the other parts above.

This table covers the gaskets that seal the Intake Plenum. 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 Intake Plenum Gasket parts are listed for the 2020 Toyota Avalon, from AJUSA and MAHLE / CLEVITE.

This group includes AJUSA 01645000 and MAHLE / CLEVITE MS20627.

This table covers the intake valves that let air (and fuel, on port-injected engines) into the cylinder. 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

7 Intake Valve parts are listed for the 2020 Toyota Avalon, from MELLING, QUALCAST, TOPLINE and 1 other brand.

Part numbers include MELLING V5832, MELLING V3086 and QUALCAST 1030532, among others listed above.

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

23 Motor Mount parts are listed for the 2020 Toyota Avalon, from ANCHOR, PIONEER, WESTAR and 2 other brands. ANCHOR 10133 carries the "Popular" badge.

In the Economy grade, SKP supplies 1 part: the catalog's value-priced group. A representative part number is SKP SKM10134.

The Standard Replacement section lists 10 options from ANCHOR, PIONEER, WESTAR and 1 other brand — built to original-equipment specification. ANCHOR 10133 is listed in this group.

12 ungrouped parts are not assigned to a grade, with the same engine-level match.

This table covers the Motor Mount kits. Read more

ANCHOR supplies both parts for the 2020 Toyota Avalon.

This group includes ANCHOR 300833 and ANCHOR 300825.

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

42 Oil parts are listed for the 2020 Toyota Avalon, from VALVOLINE, LIQUI MOLY, MOBIL and 3 other brands. LIQUI MOLY 20328 carries the "Popular" badge. Grades run from Full Synthetic through Racing; Full Synthetic is the most populated section, led by LIQUI MOLY, VALVOLINE, MOBIL and 3 other brands.

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

One part is listed for the 2020 Toyota Avalon — STANDARD MOTOR PRODUCTS OCK108.

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: BECK/ARNLEY 0396661.

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

4 Oil Drain Plug parts are listed for the 2020 Toyota Avalon, from AGS, BECK/ARNLEY, DORMAN and 1 other brand. All of them fit every engine offered in the 2020 Avalon.

Part numbers include AGS ODP00011, BECK/ARNLEY 0160116 and DORMAN 090049, among others listed above.

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

6 Oil Drain Plug Gasket parts for the 2020 Toyota Avalon come from 6 brands — DORMAN, AJUSA, APEX and 3 other brands. The "Popular" part is DORMAN 095156. 4 parts fit every engine; the other 2 are engine-specific.

Part numbers include DORMAN 095156, AJUSA 22005800 and APEX ADP1902, among others listed above.

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

3 Oil Filler Cap parts are listed for the 2020 Toyota Avalon, from CALORSTAT, GATES and MOTORAD. All of them fit every engine offered in the 2020 Avalon.

Listed part numbers: CALORSTAT OC2312, GATES 31285 and MOTORAD MO155.

This table covers the gaskets that seal the Oil Filler Cap. 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 00519100.

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

34 Oil Filter parts are listed for the 2020 Toyota Avalon, from VARIOUS MFR, WIX, BOSCH and 13 other brands. PRO-TEC PXL57047 carries the "Popular" badge. Grades run from Economy through Standard Replacement; Standard Replacement is the most populated section, led by ACDELCO, WIX, BECK/ARNLEY and 8 other brands.

This table covers the Oil Filter covers. Read more

6 Oil Filter Cover parts for the 2020 Toyota Avalon come from 5 brands — MOTORAD, DORMAN, SKP and 2 other brands. The "Popular" part is DORMAN 917016. 1 part fits every engine; the other 5 are engine-specific.

Listed part numbers: DORMAN 917016, SKP SK917016 and AUTOTECNICA TY1420831, 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

One part is listed for the 2020 Toyota Avalon — VEMO V70720463.

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

6 Oil Pan parts for the 2020 Toyota Avalon come from 4 brands — ACKOJA, DORMAN, SKP and 1 other brand.

Listed part numbers: ACKOJA A700990, ACKOJA A700991 and DORMAN 266004, plus the other parts 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

2 Oil Pan Gasket parts are listed for the 2020 Toyota Avalon, from AUTOTECNICA and VICTOR REINZ. 1 part fits every engine; the other 1 is engine-specific.

Listed part numbers: AUTOTECNICA TY1415891 and VICTOR REINZ 703141410.

This table covers the Oil pumps. Typical signs include noise from the pump, no pressure, or fluid that never arrives at the outlet. Prime or fill the pump as the notes require. A dry start is a common way to kill a new unit. Read more

2 Oil Pump parts are listed for the 2020 Toyota Avalon, from MELLING and TOPLINE.

Listed part numbers: MELLING M581 and TOPLINE OPTO59.

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

7 Oil Pump Chain parts for the 2020 Toyota Avalon come from 6 brands — S.A. GEAR, INA, MELLING and 3 other brands. The "Popular" part is MELLING 1084.

The Kit section lists 1 option from INA — grouped under the catalog's "Kit" designation — the notes column spells out what sets them apart. INA ZC0158 is listed in this group.

Standard Replacement: 5 parts, from S.A. GEAR, MELLING, CLOYES and 1 other brand. A representative part number is MELLING 1084.

1 further part sits outside the graded sections, with the same engine-level match.

This group includes MELLING 1084, INA ZC0158 and S.A. GEAR C1177 and the remaining parts 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

4 Oil Pump Chain Tensioner parts are listed for the 2020 Toyota Avalon, from CLOYES, MELLING, PREFERRED COMPONENTS INC and 1 other brand.

This group includes CLOYES 96157, MELLING BT7064 and PREFERRED COMPONENTS INC T66361 and the remaining parts above.

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

This group shows a single part: GATES VVS398.

This table covers the O-rings that seal the oil-pump pickup tube. 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 2020 Toyota Avalon — FEL-PRO 73595.

This table covers the Oil Pump sprockets. Read more

4 Oil Pump Sprocket parts for the 2020 Toyota Avalon come from 4 brands — CLOYES, MELLING, PREFERRED COMPONENTS INC and 1 other brand.

Listed part numbers: CLOYES S1184, MELLING S1325 and PREFERRED COMPONENTS INC G57020, plus the other parts above.

This table covers the pistons that travel in each cylinder. Typical signs include knock, blow-by, or a cylinder that will not hold compression. Piston work is a short-block job. Match bore, pin and ring pack in the notes — not the photo. Read more

2 Piston parts for the 2020 Toyota Avalon come from TOPLINE.

Listed part numbers: TOPLINE PATO59H and TOPLINE PATO49L.

This table covers the Piston Pin bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

One part is listed for the 2020 Toyota Avalon — TOPLINE PBD34.

This table covers the rings that seal each piston to the cylinder wall. Read more

2 Piston Ring parts for the 2020 Toyota Avalon come from TOPLINE.

Listed part numbers: TOPLINE RSTO59 and TOPLINE RSTO49.

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

12 Timing Chain parts for the 2020 Toyota Avalon come from 5 brands — CLOYES, MELLING, S.A. GEAR and 2 other brands. The "Popular" part is CLOYES 94216.

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

13 Timing Chain & Component Kit parts are listed for the 2020 Toyota Avalon, from S.A. GEAR, CLOYES, MELLING and 2 other brands. S.A. GEAR 76415 carries the "Popular" badge.

Economy: 4 parts, from S.A. GEAR. A representative part number is S.A. GEAR 76415.

The Standard Replacement section: 9 options from CLOYES, MELLING, ENGINETECH and 1 other brand. CLOYES 90995SX is listed in this group.