2024 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

One part is listed for the 2024 Toyota Highlander — TOPLINE RBTO59.

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 2024 Toyota Highlander, from AJUSA and TOPLINE.

Listed part numbers: AJUSA 54339100, AJUSA 54307700 and TOPLINE CBSTO59.

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

2 Crankshaft Main Bearing parts for the 2024 Toyota Highlander come from TOPLINE.

Listed part numbers: TOPLINE TWTO59 and TOPLINE MBTO59.

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

4 Crankshaft Seal parts for the 2024 Toyota Highlander come from 2 brands — AJUSA and VICTOR REINZ. 2 parts fit every engine; the other 2 are engine-specific.

This group includes AJUSA 15121900, AJUSA 15092800 and VICTOR REINZ 811059200 and the remaining parts above.

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

3 Cylinder Head Bolt parts are listed for the 2024 Toyota Highlander, from AJUSA and TOPLINE.

Listed part numbers: AJUSA 81087500, AJUSA 81078800 and TOPLINE HBTO59.

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

3 Cylinder Head Gasket parts are listed for the 2024 Toyota Highlander, from AJUSA and MAHLE / CLEVITE.

This group includes AJUSA 10276100, AJUSA 10251200 and MAHLE / CLEVITE 55502.

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

3 Cylinder Head Gasket Set parts are listed for the 2024 Toyota Highlander, from AJUSA and TOPLINE.

Listed part numbers: AJUSA 52657200, AJUSA 52570500 and TOPLINE HSTO59.

This table covers the Engine covers. Read more

TECHPRO supplies both parts for the 2024 Toyota Highlander.

Part numbers include TECHPRO TO1228313 and TECHPRO TO1228315.

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

3 Engine Kit Gasket Set parts are listed for the 2024 Toyota Highlander, from AJUSA and TOPLINE.

Listed part numbers: AJUSA 50583700, AJUSA 50522800 and TOPLINE CGSTO59.

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

This group shows a single part: TOPLINE EVTO59.

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

2 Harmonic Balancer parts are listed for the 2024 Toyota Highlander, from ATP and PIONEER.

Listed part numbers: ATP 102224 and PIONEER DA2224.

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

5 Intake Manifold Gasket parts are listed for the 2024 Toyota Highlander, from AJUSA, BECK/ARNLEY, ELRING and 1 other brand.

Listed part numbers: AJUSA 13347700, AJUSA 13316900 and BECK/ARNLEY 0376251, plus the other parts 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

2 Intake Valve parts for the 2024 Toyota Highlander come from 2 brands — QUALCAST and TOPLINE.

Part numbers include QUALCAST 1030532 and TOPLINE IVTO59.

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

8 Motor Mount parts for the 2024 Toyota Highlander come from 3 brands — ANCHOR, DEA / MARMON RIDE CONTROL and PIONEER. The "Popular" part is ANCHOR 10210. 2 parts fit every engine; the other 6 are engine-specific.

Listed part numbers: ANCHOR 10210, ANCHOR 10379 and ANCHOR 10229, plus the other parts above.

This table covers the Motor Mount kits. Read more

This group shows a single part: ANCHOR 300978.

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

41 Oil parts for the 2024 Toyota Highlander come from 6 brands — VALVOLINE, LIQUI MOLY, MOBIL and 3 other brands. The "Popular" part is LIQUI MOLY 22044. Grades run from Full Synthetic through High Mileage (>75,000 Miles); Full Synthetic is the most populated section, led by LIQUI MOLY, VALVOLINE, MOBIL and 3 other brands.

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

One part is listed for the 2024 Toyota Highlander — BECK/ARNLEY 0396661.

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

4 Oil Drain Plug parts for the 2024 Toyota Highlander come from 3 brands — DORMAN, BECK/ARNLEY and REIN. Every part fits both the 2.4L L4 Turbocharged and the 2.5L L4 ELECTRIC/GAS.

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

2 Oil Drain Plug Gasket parts are listed for the 2024 Toyota Highlander, from AJUSA and DORMAN. All of them fit every engine offered in the 2024 Highlander.

Part numbers include AJUSA 22005800 and DORMAN 095156.

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

3 Oil Filler Cap parts for the 2024 Toyota Highlander come from 3 brands — CALORSTAT, GATES and MOTORAD. Every part fits both the 2.4L L4 Turbocharged and the 2.5L L4 ELECTRIC/GAS.

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

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

17 Oil Filter parts for the 2024 Toyota Highlander come from 14 brands — VARIOUS MFR, BOSCH, FAMOUS BRAND and 11 other brands. The "Popular" part is VARIOUS MFR PG4476. Every part fits both the 2.4L L4 Turbocharged and the 2.5L L4 ELECTRIC/GAS.

The Economy section lists 7 options from VARIOUS MFR, BOSCH, FAMOUS BRAND and 3 other brands — the catalog's value-priced group. VARIOUS MFR PG4476 is listed in this group.

The High Performance / Heavy Duty section lists 1 option from MOBIL — grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. MOBIL M1103A is listed in this group.

In the Standard Replacement grade, ACDELCO, BECK/ARNLEY, BOSCH and 5 other brands supply 8 parts: built to original-equipment specification. A representative part number is ACDELCO PF1233.

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

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: STANDARD MOTOR PRODUCTS FLS359.

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

2 Oil Pan parts are listed for the 2024 Toyota Highlander, from DORMAN and SPECTRA PREMIUM.

Part numbers include DORMAN 266004 and SPECTRA PREMIUM TOP76A.

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

This group shows a single part: 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

This group shows a single part: TOPLINE OPTO59.

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

6 Oil Pump Chain parts are listed for the 2024 Toyota Highlander, from JAPANESE OE, MELLING, PREFERRED COMPONENTS INC and 1 other brand.

This group includes JAPANESE OE A05095AM, JAPANESE OE A05079AM and MELLING 1110 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

2 Oil Pump Chain Tensioner parts for the 2024 Toyota Highlander come from 2 brands — MELLING and PREFERRED COMPONENTS INC. Every part fits both the 2.4L L4 Turbocharged and the 2.5L L4 ELECTRIC/GAS.

Listed part numbers: MELLING BT7064 and PREFERRED COMPONENTS INC T66361.

This table covers the Oil Pump sprockets. Read more

3 Oil Pump Sprocket parts are listed for the 2024 Toyota Highlander, from MELLING, PREFERRED COMPONENTS INC and S.A. GEAR.

Part numbers include MELLING S1325, PREFERRED COMPONENTS INC G57020 and S.A. GEAR S1581.

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

One part is listed for the 2024 Toyota Highlander — TOPLINE PATO59H.

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

One part is listed for the 2024 Toyota Highlander — TOPLINE RSTO59.

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

6 Timing Chain parts are listed for the 2024 Toyota Highlander, from JAPANESE OE, MELLING, PREFERRED COMPONENTS INC and 1 other brand.

This group includes JAPANESE OE A05094AM, JAPANESE OE A05078AM and MELLING 1109 and the remaining parts above.

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

11 Timing Chain & Component Kit parts for the 2024 Toyota Highlander come from 6 brands — MELLING, PREFERRED COMPONENTS INC, S.A. GEAR and 3 other brands. The "Popular" part is MELLING 31083SX.

The Economy section: 4 options from PREFERRED COMPONENTS INC and S.A. GEAR. PREFERRED COMPONENTS INC TS17142 is listed in this group.

Standard Replacement: 7 parts, from MELLING, INA, JAPANESE OE and 1 other brand. A representative part number is MELLING 31083SX.

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

9 Timing Chain Guide / Damper parts are listed for the 2024 Toyota Highlander, from MELLING, PREFERRED COMPONENTS INC and S.A. GEAR.

Part numbers include MELLING BG7070, MELLING BG7071 and MELLING BT7088, 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

4 Timing Chain Tensioner parts for the 2024 Toyota Highlander come from 3 brands — MELLING, PREFERRED COMPONENTS INC and S.A. GEAR.

This group includes MELLING BT7089, MELLING BT7062 and PREFERRED COMPONENTS INC T66360 and the remaining parts above.

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

6 Timing Crank Sprocket parts for the 2024 Toyota Highlander come from 3 brands — MELLING, PREFERRED COMPONENTS INC and S.A. GEAR.

Listed part numbers: MELLING S1323, MELLING S1324 and PREFERRED COMPONENTS INC G50300, 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

One part is listed for the 2024 Toyota Highlander — AJUSA JTC12790.

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

This group shows a single part: AJUSA OP11481.

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

5 Valve Cover Gasket parts for the 2024 Toyota Highlander come from 3 brands — AJUSA, BECK/ARNLEY and MAHLE / CLEVITE.

Listed part numbers: AJUSA 56097500, AJUSA 56082100 and BECK/ARNLEY 0362084, plus the other parts above.

This table covers the pressed-in bronze and cast-iron guides that align valve stems. Typical signs include oil smoke on startup, a guide that has gone oval, or a valve that no longer seats quietly. Guides are a machine-shop fit. Confirm stem diameter in the notes before ordering. Read more

2 Valve Guide parts for the 2024 Toyota Highlander come from TOPLINE.

This group includes TOPLINE EVGTO59 and TOPLINE IVGTO55.

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

This group shows a single part: AJUSA 85022700.

This table covers the springs that close each intake and exhaust valve. Typical signs include a sagging corner, a broken coil, or a clunk from the spring pocket. Replace springs in axle pairs and inspect the seats. Read more

QUALCAST supplies both parts for the 2024 Toyota Highlander.

This group includes QUALCAST 325507 and QUALCAST 325508.

This table covers the Valve Spring retainers. Read more

One part is listed for the 2024 Toyota Highlander — MELLING VSR726.

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

2 Valve Spring Retainer Keeper parts are listed for the 2024 Toyota Highlander, from MELLING and SBI. 1 part fits every engine; the other 1 is engine-specific.

Part numbers include MELLING VL1100 and SBI 1211100.

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

9 Valve Stem Seal parts for the 2024 Toyota Highlander come from 3 brands — AJUSA, SBI and TOPLINE. The "Popular" part is SBI 1221266.

Listed part numbers: SBI 1221266, SBI 1221282 and AJUSA 12027100, 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

This group shows a single part: WELLS 2T1306.