2021 Toyota 4RUNNER Engine Parts

This table covers the connecting rods between each piston and the crankshaft. Read more

This group shows a single part: TOPLINE CRTO47.

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

2 Connecting Rod Bearing parts for the 2021 Toyota 4RUNNER come from 2 brands — KING ENGINE BEARINGS and TOPLINE.

Part numbers include KING ENGINE BEARINGS CR6872SM and TOPLINE RBTO47.

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: TOPLINE CBSTO47B.

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

3 Crankshaft Main Bearing parts are listed for the 2021 Toyota 4RUNNER, from TOPLINE and KING ENGINE BEARINGS.

This group includes KING ENGINE BEARINGS MB4526SI, TOPLINE TWTO47L and TOPLINE MBTO47.

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

6 Crankshaft Seal parts are listed for the 2021 Toyota 4RUNNER, from VICTOR REINZ, FEL-PRO, APEX and 2 other brands. FEL-PRO BS40686 carries the "Popular" badge.

This group includes FEL-PRO BS40686, VICTOR REINZ 815327400 and APEX ABS871 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 for the 2021 Toyota 4RUNNER come from 2 brands — VICTOR REINZ and TOPLINE.

Listed part numbers: TOPLINE HBTO47, VICTOR REINZ 143233301 and VICTOR REINZ 143233302.

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 2021 Toyota 4RUNNER come from 3 brands — MAHLE / CLEVITE, APEX and VICTOR REINZ. The "Popular" part is MAHLE / CLEVITE 55079.

Part numbers include MAHLE / CLEVITE 55079, APEX AHG886L and APEX AHG886R, 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

3 Cylinder Head Gasket Set parts for the 2021 Toyota 4RUNNER come from 3 brands — MAHLE / CLEVITE, TOPLINE and VICTOR REINZ.

Part numbers include MAHLE / CLEVITE HS55080, TOPLINE HSTO47B and VICTOR REINZ 025407001.

This table covers the Engine covers. Read more

This group shows a single part: TECHPRO TO1228244.

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

2 Engine Kit Gasket Set parts for the 2021 Toyota 4RUNNER come from 2 brands — TOPLINE and VICTOR REINZ.

Listed part numbers: TOPLINE CGSTO47B and VICTOR REINZ 015407001.

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

2 Exhaust Valve parts are listed for the 2021 Toyota 4RUNNER, from SBI and TOPLINE.

This group includes SBI 13087 and TOPLINE EVTO50.

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

3 Harmonic Balancer parts for the 2021 Toyota 4RUNNER come from 3 brands — ACKOJA, DAYCO and DORMAN.

This group includes ACKOJA A700994, DAYCO PB1396N and DORMAN 594350.

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

3 Intake Manifold Gasket parts for the 2021 Toyota 4RUNNER come from 3 brands — BECK/ARNLEY, MAHLE / CLEVITE and VICTOR REINZ.

Part numbers include BECK/ARNLEY 0376244, MAHLE / CLEVITE MS20209 and VICTOR REINZ 115413601.

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

3 Intake Plenum Gasket parts are listed for the 2021 Toyota 4RUNNER, from BECK/ARNLEY, FEL-PRO and MAHLE / CLEVITE.

This group includes BECK/ARNLEY 0374892, FEL-PRO MS97236 and MAHLE / CLEVITE MS20153.

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

4 Intake Valve parts are listed for the 2021 Toyota 4RUNNER, from MELLING, QUALCAST, SBI and 1 other brand.

Part numbers include MELLING V3086, QUALCAST 1013086 and SBI 13086, 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

6 Motor Mount parts are listed for the 2021 Toyota 4RUNNER, from SKP, DEA / MARMON RIDE CONTROL, ANCHOR and 3 other brands. SKP SKM9599 carries the "Popular" badge.

In the Economy grade, SKP supplies 1 part: the catalog's value-priced group. A representative part number is SKP SKM9599.

The Standard Replacement section lists 5 options from DEA / MARMON RIDE CONTROL, ANCHOR, BECK/ARNLEY and 2 other brands — built to original-equipment specification. DEA / MARMON RIDE CONTROL A4260 is listed in this group.

Part numbers include SKP SKM9599, DEA / MARMON RIDE CONTROL A4260 and ANCHOR 9599, among others listed above.

This table covers the Motor Mount kits. Read more

ANCHOR supplies both parts for the 2021 Toyota 4RUNNER.

Listed part numbers: ANCHOR 300146 and ANCHOR 300145.

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

30 Oil parts are listed for the 2021 Toyota 4RUNNER, from VALVOLINE, LIQUI MOLY, MOBIL and 2 other brands. LIQUI MOLY 22044 carries the "Popular" badge. 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 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

One part is listed for the 2021 Toyota 4RUNNER — NISSENS 91365.

This table covers the Oil Cooler 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

SUNSONG supplies both parts for the 2021 Toyota 4RUNNER.

This group includes SUNSONG 5806016 and SUNSONG 5801461.

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

5 Oil Drain Plug parts are listed for the 2021 Toyota 4RUNNER, from DORMAN, ACKOJA, BECK/ARNLEY and 1 other brand. DORMAN 090038 carries the "Popular" badge.

Listed part numbers: DORMAN 090038, ACKOJA A700114 and BECK/ARNLEY 0160116, plus the other parts 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

5 Oil Drain Plug Gasket parts for the 2021 Toyota 4RUNNER come from 5 brands — DORMAN, APEX, FEL-PRO and 2 other brands. The "Popular" part is DORMAN 095156.

Listed part numbers: DORMAN 095156, APEX ADP1902 and FEL-PRO 70822, 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 4RUNNER, from CALORSTAT, GATES and MOTORAD.

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

18 Oil Filter parts are listed for the 2021 Toyota 4RUNNER, from FRAM, VARIOUS MFR, WIX and 11 other brands. MOBIL M1C256A carries the "Popular" badge.

Economy: 5 parts, from CHAMP / LUBER-FINER, FRAM, FVP and 2 other brands. A representative part number is CHAMP / LUBER-FINER P968.

In the High Performance / Heavy Duty grade, MOBIL, WIX and FRAM supply 3 parts: grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. A representative part number is MOBIL M1C256A.

The Standard Replacement section: 10 options from BOSCH, WIX, ACDELCO and 7 other brands. BOSCH 3981 is listed in this group.

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

This group shows a single part: MAHLE / CLEVITE B33348.

This table covers the Oil Filter covers. Read more

7 Oil Filter Cover parts for the 2021 Toyota 4RUNNER come from 6 brands — MOTORAD, DORMAN, SKP and 3 other brands. The "Popular" part is DORMAN 917016.

Listed part numbers: DORMAN 917016, SKP SK917016 and ACKOJA A700770, plus the other parts above.

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

3 Oil Pan parts for the 2021 Toyota 4RUNNER come from 3 brands — AUTOTECNICA, REIN and SPECTRA PREMIUM.

Part numbers include AUTOTECNICA TY1416309, REIN ESK0211 and SPECTRA PREMIUM TOP32A.

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

4 Oil Pan Gasket parts are listed for the 2021 Toyota 4RUNNER, from AUTOTECNICA, FEL-PRO, ULTRA-POWER and 1 other brand.

Part numbers include AUTOTECNICA TY1415891 and FEL-PRO OS30752, among others listed above.

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

4 Oil Pump parts are listed for the 2021 Toyota 4RUNNER, from SKP, MELLING and TOPLINE.

Economy: 2 parts, from SKP. A representative part number is SKP SKK529.

The Standard Replacement section: 1 option from MELLING. MELLING M529 is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

Part numbers include SKP SKK529, SKP SKM529 and MELLING M529, among others listed above.

This table covers the Oil Pump repair kits. Read more

This group shows a single part: MELLING K529.

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

3 Piston parts for the 2021 Toyota 4RUNNER come from 3 brands — ENGINETECH, MAHLE / CLEVITE and TOPLINE.

In the Premium grade, ENGINETECH and MAHLE / CLEVITE supply 2 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is ENGINETECH P11256.

Standard Replacement: 1 part, from TOPLINE. A representative part number is TOPLINE PATO47B.

Listed part numbers: ENGINETECH P11256, MAHLE / CLEVITE 2243894 and TOPLINE PATO47B.

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 4RUNNER — TOPLINE PBD34.

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

4 Piston Ring parts for the 2021 Toyota 4RUNNER come from 3 brands — HASTINGS MANUFACTURING, ENGINETECH and TOPLINE.

Premium: 1 part, from ENGINETECH. A representative part number is ENGINETECH S94126.

Standard Replacement: 3 parts, from HASTINGS MANUFACTURING and TOPLINE. A representative part number is HASTINGS MANUFACTURING 2C5151.

Part numbers include ENGINETECH S94126, HASTINGS MANUFACTURING 2C5151 and HASTINGS MANUFACTURING 2C5151S, among others listed above.

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

One part is listed for the 2021 Toyota 4RUNNER — MELLING MR906.

This table covers the Thrust washers. Read more

KING ENGINE BEARINGS supplies both parts for the 2021 Toyota 4RUNNER.

Part numbers include KING ENGINE BEARINGS TW2030AM and KING ENGINE BEARINGS TW2024AM.

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

6 Timing Chain parts for the 2021 Toyota 4RUNNER come from 3 brands — CLOYES, MELLING and PREFERRED COMPONENTS INC. The "Popular" part is CLOYES 94216.

This group includes CLOYES 94216, MELLING 1026 and CLOYES C924 and the remaining parts above.

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

9 Timing Chain & Component Kit parts are listed for the 2021 Toyota 4RUNNER, from PREFERRED COMPONENTS INC, CLOYES, MELLING and 3 other brands. CLOYES 90924S carries the "Popular" badge.

Economy: 3 parts, from PREFERRED COMPONENTS INC and GATES. A representative part number is GATES CHK131.

The Standard Replacement section: 6 options from CLOYES, MELLING, ENGINETECH and 1 other brand. CLOYES 90924S is listed in this group.

Listed part numbers: CLOYES 90924S, GATES CHK131 and PREFERRED COMPONENTS INC TS22178, plus the other parts above.

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

9 Timing Chain Guide / Damper parts for the 2021 Toyota 4RUNNER come from 3 brands — MELLING, CLOYES and PREFERRED COMPONENTS INC. The "Popular" part is MELLING BG5971.

This group includes MELLING BG5971, MELLING BG5970 and CLOYES 95971 and the remaining parts 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

9 Timing Chain Tensioner parts are listed for the 2021 Toyota 4RUNNER, from MELLING, CLOYES and PREFERRED COMPONENTS INC. MELLING BT5077 carries the "Popular" badge.

This group includes MELLING BT5077, MELLING BT5078 and CLOYES 95579 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 are listed for the 2021 Toyota 4RUNNER, from SKF and WJB / INMOTION PARTS.

This group includes SKF 16540A and WJB / INMOTION PARTS WS16540A.

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

4 Timing Crank Sprocket parts are listed for the 2021 Toyota 4RUNNER, from CLOYES, FVP, MELLING and 1 other brand.

This group includes CLOYES S941 and MELLING S1261 and the remaining parts above.

This table covers the Timing Idler sprockets. Read more

4 Timing Idler Sprocket parts for the 2021 Toyota 4RUNNER come from 4 brands — CLOYES, FVP, MELLING and 1 other brand.

Part numbers include CLOYES S942T and MELLING S1290, among others listed above.

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 are listed for the 2021 Toyota 4RUNNER, from VICTOR REINZ, FEL-PRO, APEX and 1 other brand. FEL-PRO VS50826R carries the "Popular" badge.

Part numbers include FEL-PRO VS50826R, APEX AVC886S and MAHLE / CLEVITE VS50741, among others listed above.

This table covers the Valve Cover grommets. Read more

One part is listed for the 2021 Toyota 4RUNNER — BECK/ARNLEY 0396605.

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

4 Valve Guide parts are listed for the 2021 Toyota 4RUNNER, from SBI and TOPLINE.

This group includes SBI 1403135, SBI 1403134 and TOPLINE EVGTO55 and the remaining parts above.

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

2 Valve Lifter parts are listed for the 2021 Toyota 4RUNNER, from SEALED POWER and TOPLINE.

Listed part numbers: SEALED POWER HT2307 and TOPLINE A2319.

This table covers the Valve seats. Read more

2 Valve Seat parts for the 2021 Toyota 4RUNNER come from SBI.

Listed part numbers: SBI SB1288E1 and SBI SB1527E1.

This table covers the Valve Spring retainers. Read more

This group shows a single part: MELLING VSR727.

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

2 Valve Spring Retainer Keeper parts for the 2021 Toyota 4RUNNER come from 2 brands — MELLING and SBI.

This group includes 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

6 Valve Stem Seal parts are listed for the 2021 Toyota 4RUNNER, from SBI, MAHLE / CLEVITE, VICTOR REINZ and 1 other brand. SBI 1221266 carries the "Popular" badge.

Listed part numbers: SBI 1221266, VICTOR REINZ 125402402 and MAHLE / CLEVITE SS45924, 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

12 Variable Valve Timing (VVT) Solenoid / Actuator parts are listed for the 2021 Toyota 4RUNNER, from ROSTRA, GATES, WELLS and 5 other brands. ROSTRA 790066 carries the "Popular" badge.

Economy: 7 parts, from ROSTRA, GATES, WELLS and 1 other brand. A representative part number is ROSTRA 790066.

The Standard Replacement section: 5 options from BECK/ARNLEY, NTK, STANDARD MOTOR PRODUCTS and 1 other brand. NTK VV0027 is listed in this group.

This table covers the Variable Valve Timing (VVT) Solenoid filters. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for. Read more

2 Variable Valve Timing (VVT) Solenoid Filter parts are listed for the 2021 Toyota 4RUNNER, from DORMAN and MELLING.

Listed part numbers: DORMAN 926126 and MELLING VCTF2000.

This table covers the Variable Valve Timing (VVT) Sprocket bolts. Read more

This group shows a single part: CLOYES VCB103.