2021 Toyota Highlander 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

5 Connecting Rod Bearing parts for the 2021 Toyota Highlander come from 3 brands — KING ENGINE BEARINGS, TOPLINE and ENGINETECH.

Part numbers include ENGINETECH BB1035, KING ENGINE BEARINGS CR6873SM and KING ENGINE BEARINGS CR6873MC, among others listed above.

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 2021 Toyota Highlander come from 2 brands — AJUSA and TOPLINE.

Part numbers include AJUSA 54307700, AJUSA 54281900 and TOPLINE CBSTO59, among others listed 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

TOPLINE supplies the 4 Crankshaft Main Bearing parts for the 2021 Toyota Highlander.

Listed part numbers: TOPLINE TWTO59, TOPLINE MBTO59 and TOPLINE MBTO49, 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

10 Crankshaft Seal parts are listed for the 2021 Toyota Highlander, from VICTOR REINZ, AJUSA, ELRING and 2 other brands. ELRING 473150 carries the "Popular" badge.

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

6 Cylinder Head Bolt parts for the 2021 Toyota Highlander come from 3 brands — VICTOR REINZ, TOPLINE and AJUSA.

This group includes AJUSA 81078800, TOPLINE HBTO59 and TOPLINE HBTO47 and the remaining 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 2021 Toyota Highlander 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 2021 Toyota Highlander come from 3 brands — AJUSA, MAHLE / CLEVITE and TOPLINE.

Part numbers include AJUSA 52570500, AJUSA 52526900 and MAHLE / CLEVITE HS55502A, among others listed above.

This table covers the Engine covers. Read more

6 Engine Cover parts for the 2021 Toyota Highlander come from 2 brands — TECHPRO and VARIOUS MFR. The "Popular" part is TECHPRO TO1228271. 5 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: TECHPRO TO1228271, TECHPRO TO1228315 and TECHPRO TO1228275, plus the other parts above.

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 2021 Toyota Highlander come from 2 brands — AJUSA and TOPLINE.

Part numbers include AJUSA 50522800, AJUSA 50480500 and TOPLINE CGSTO59, among others listed 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 2021 Toyota Highlander, from MELLING, TOPLINE and SBI.

Listed part numbers: MELLING V5831, MELLING V3087 and SBI 13087, plus the other parts above.

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

This group shows a single part: STANDARD MOTOR PRODUCTS GDF724.

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

4 Harmonic Balancer parts for the 2021 Toyota Highlander come from 2 brands — ATP and PIONEER.

Part numbers include ATP 102224, ATP 102031 and PIONEER DA2224, among others listed 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 2021 Toyota Highlander come from 5 brands — AJUSA, MAHLE / CLEVITE, VICTOR REINZ and 2 other brands.

This group includes AJUSA 13316900, AJUSA 13255600 and BECK/ARNLEY 0376251 and the remaining 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

4 Intake Plenum Gasket parts are listed for the 2021 Toyota Highlander, from AJUSA, ELRING, MAHLE / CLEVITE and 1 other brand.

Part numbers include AJUSA 01645000, ELRING B54040 and MAHLE / CLEVITE MS20627, among others listed above.

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

6 Intake Valve parts are listed for the 2021 Toyota Highlander, from QUALCAST, TOPLINE, MELLING and 1 other brand.

Part numbers include MELLING V3086, QUALCAST 1030532 and QUALCAST 1013086, 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

18 Motor Mount parts are listed for the 2021 Toyota Highlander, from ANCHOR, PIONEER and DEA / MARMON RIDE CONTROL. ANCHOR 10210 carries the "Popular" badge.

This table covers the Motor Mount kits. Read more

ANCHOR supplies the 3 Motor Mount Kit parts for the 2021 Toyota Highlander.

This group includes ANCHOR 300978, ANCHOR 300981 and ANCHOR 300980.

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

39 Oil parts are listed for the 2021 Toyota Highlander, from VALVOLINE, LIQUI MOLY, MOBIL and 3 other brands. LIQUI MOLY 22044 carries the "Popular" badge. They are grouped as Full Synthetic and High Mileage (>75,000 Miles), with Full Synthetic the largest group at 23 parts from LIQUI MOLY, VALVOLINE, MOBIL and 2 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

5 Oil Cooler parts are listed for the 2021 Toyota Highlander, from ACKOJA, NISSENS and STANDARD MOTOR PRODUCTS.

Listed part numbers: ACKOJA A70600016, ACKOJA A70600029 and NISSENS 91442, plus the other parts above.

This table covers the Oil Cooler Hose pipes. Read more

One part is listed for the 2021 Toyota Highlander — STANDARD MOTOR PRODUCTS EOC001.

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

8 Oil Drain Plug parts are listed for the 2021 Toyota Highlander, from DORMAN, ELRING, BECK/ARNLEY and 3 other brands. BECK/ARNLEY 0160116 carries the "Popular" badge. 3 parts fit every engine; the other 5 are engine-specific.

Part numbers include BECK/ARNLEY 0160116, DORMAN 090038 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 2021 Toyota Highlander come from 6 brands — DORMAN, ULTRA-POWER, APEX and 3 other brands. The "Popular" part is DORMAN 095156. 5 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: DORMAN 095156 and APEX ADP1902, plus the other parts above.

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

3 Oil Filler Cap parts are listed for the 2021 Toyota Highlander, from CALORSTAT, GATES and MOTORAD. All of them fit every engine offered in the 2021 Highlander.

This group includes 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

33 Oil Filter parts are listed for the 2021 Toyota Highlander, from VARIOUS MFR, BOSCH, WIX and 13 other brands. PRO-TEC PXL57047 carries the "Popular" badge. Economy, High Performance / Heavy Duty and Standard Replacement are all represented, and Standard Replacement alone accounts for 17 parts.

This table covers the Oil Filter covers. Read more

5 Oil Filter Cover parts for the 2021 Toyota Highlander come from 4 brands — MOTORAD, DORMAN, BECK/ARNLEY and 1 other brand. The "Popular" part is DORMAN 917016.

Part numbers include DORMAN 917016, BECK/ARNLEY 0410013 and MOTORAD MO300, among others listed 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

2 Oil Level Sensor parts are listed for the 2021 Toyota Highlander, from STANDARD MOTOR PRODUCTS and VEMO.

This group includes STANDARD MOTOR PRODUCTS FLS360 and VEMO V70720463.

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

7 Oil Pan parts for the 2021 Toyota Highlander come from 4 brands — ACKOJA, DORMAN, SKP and 1 other brand.

Part numbers include ACKOJA A700990, ACKOJA A700991 and ACKOJA A700989, 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

2 Oil Pan Gasket parts are listed for the 2021 Toyota Highlander, from AUTOTECNICA and VICTOR REINZ. 1 part fits every engine; the other 1 is engine-specific.

This group includes 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

3 Oil Pump parts are listed for the 2021 Toyota Highlander, from AISIN, MELLING and TOPLINE.

Part numbers include AISIN OPT125, MELLING M581 and TOPLINE OPTO59.

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

4 Oil Pump Chain parts for the 2021 Toyota Highlander come from 4 brands — CLOYES, JAPANESE OE, MELLING and 1 other brand.

This group includes CLOYES C996, JAPANESE OE A05079AM and MELLING 1084 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

3 Oil Pump Chain Tensioner parts are listed for the 2021 Toyota Highlander, from CLOYES, MELLING and PREFERRED COMPONENTS INC.

Part numbers include CLOYES 96157, MELLING BT7064 and PREFERRED COMPONENTS INC T66361.

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 2021 Toyota Highlander — FEL-PRO 73595.

This table covers the Oil Pump sprockets. Read more

3 Oil Pump Sprocket parts for the 2021 Toyota Highlander come from 3 brands — CLOYES, MELLING and PREFERRED COMPONENTS INC.

Part numbers include CLOYES S1184, MELLING S1325 and PREFERRED COMPONENTS INC G57020.

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 2021 Toyota Highlander come from TOPLINE.

Part numbers include 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 2021 Toyota Highlander — TOPLINE PBD34.

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

2 Piston Ring parts for the 2021 Toyota Highlander come from TOPLINE.

Listed part numbers: TOPLINE RSTO59 and TOPLINE RSTO49.

This table covers the Thrust washers. Read more

One part is listed for the 2021 Toyota Highlander — KING ENGINE BEARINGS TW1036AM.

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

11 Timing Chain parts for the 2021 Toyota Highlander come from 5 brands — CLOYES, MELLING, PREFERRED COMPONENTS INC and 2 other brands. The "Popular" part is CLOYES 94216.