2021 Toyota 4RUNNER Drivetrain Parts

This table covers the actuators that engage four-wheel drive at the transfer case or axle. 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

5 4WD Actuator parts are listed for the 2021 Toyota 4RUNNER, from STANDARD MOTOR PRODUCTS, DORMAN, SKP and 1 other brand. STANDARD MOTOR PRODUCTS TCA103 carries the "Popular" badge.

This group includes STANDARD MOTOR PRODUCTS TCA103, DORMAN 600488 and SKP SK600488 and the remaining parts above.

This table covers the Axle shafts. Read more

One part is listed for the 2021 Toyota 4RUNNER — DORMAN 926137.

This table covers the Axle Shaft bearings. 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 2021 Toyota 4RUNNER — SKF BR4317.

This table covers the Axle Shaft Lock / Snap rings. Read more

One part is listed for the 2021 Toyota 4RUNNER — SKF R271.

This table covers the seals where an axle shaft exits the housing. 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 Axle Shaft Seal parts for the 2021 Toyota 4RUNNER come from 2 brands — SKF and TIMKEN. The "Popular" part is SKF 18478.

This group includes SKF 18478, SKF 18195A and SKF 30192 and the remaining parts above.

This table covers the complete CV axle shafts from differential (or hub) to wheel. Typical signs include a click in tight turns, grease flung around the wheel well, or a vibration that builds with speed. A torn boot caught early is a boot kit; caught late it is the whole axle. Torque the axle nut to the method in the notes. Read more

8 CV Axle parts for the 2021 Toyota 4RUNNER come from 4 brands — TOP NOTCH, GSP, TRAKMOTIVE and 1 other brand. The "Popular" part is GSP NCV69170.

The Economy section lists 1 option from CARDONE — the catalog's value-priced group. CARDONE 605235 is listed in this group.

In the Heavy Duty grade, GSP, TOP NOTCH and TRAKMOTIVE supply 3 parts: rated for severe service. A representative part number is GSP NCV69170XD.

In the Specialty - For Lifted Vehicles grade, TOP NOTCH supplies 1 part: grouped under the catalog's "Specialty - For Lifted Vehicles" designation — the notes column spells out what sets them apart. A representative part number is TOP NOTCH TN18033XDP.

In the Standard Replacement grade, GSP, TRAKMOTIVE and TOP NOTCH supply 3 parts: built to original-equipment specification. A representative part number is GSP NCV69170.

Listed part numbers: GSP NCV69170, CARDONE 605235 and GSP NCV69170XD, plus the other parts above.

This table covers the CV Intermediate shafts. Read more

One part is listed for the 2021 Toyota 4RUNNER — TRAKMOTIVE TO3513.

This table covers the boots that keep grease in a CV joint. Typical signs include a split boot, grease flung around the joint, or a click once grit is inside. A boot caught early is a kit. Once the joint has clicked, the joint itself is usually worn. Read more

3 CV Joint Boot parts for the 2021 Toyota 4RUNNER come from BECK/ARNLEY.

This group includes BECK/ARNLEY 1033133, BECK/ARNLEY 1033040 and BECK/ARNLEY 1033124.

This table covers the Differential Crush sleeves. Read more

One part is listed for the 2021 Toyota 4RUNNER — SKF KRS155.

This table covers the bearings and races on the differential pinion. Read more

SKF supplies both parts for the 2021 Toyota 4RUNNER.

Part numbers include SKF BR121 and SKF BR122.

This table covers the seals at the differential pinion yoke. 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 Differential Pinion Seal parts for the 2021 Toyota 4RUNNER come from 3 brands — TIMKEN, SKF and WJB / INMOTION PARTS.

This group includes SKF 17712A, TIMKEN SL260482 and TIMKEN SL260499 and the remaining parts above.

This table covers the Differential Pinion shims. Read more

This group shows a single part: MOTIVE GEAR 1109.

This table covers kits that group the bearings, races and seals for a differential rebuild. Read more

11 Differential Rebuild Kit parts are listed for the 2021 Toyota 4RUNNER, from USA STANDARD GEAR and BCA. USA STANDARD GEAR USA14130 carries the "Popular" badge.

In the Master Kit grade, USA STANDARD GEAR and BCA supply 5 parts: grouped under the catalog's "Master Kit" designation — the notes column spells out what sets them apart. A representative part number is USA STANDARD GEAR USA14130.

The Standard Kit section lists 6 options from USA STANDARD GEAR and BCA — grouped under the catalog's "Standard Kit" designation — the notes column spells out what sets them apart. BCA NBDRK383 is listed in this group.

This table covers the ring-and-pinion gear sets that set the axle ratio. Read more

4 Differential Ring and Pinion parts for the 2021 Toyota 4RUNNER come from 2 brands — MOTIVE GEAR and RICHMOND.

The Economy section: 1 option from RICHMOND. RICHMOND T82 is listed in this group.

Standard Replacement: 3 parts, from MOTIVE GEAR. A representative part number is MOTIVE GEAR TACIFSL.

Listed part numbers: RICHMOND T82 and MOTIVE GEAR TACIFSL, plus the other parts above.

This table covers the Differential Ring Gear bolts. Read more

This group shows a single part: MOTIVE GEAR RGB19.

This table covers the driveshafts that carry torque from the transmission or transfer case. Read more

7 Drive Shaft parts are listed for the 2021 Toyota 4RUNNER, from CARDONE and TOP NOTCH. TOP NOTCH TN6917PS carries the "Popular" badge.

This group includes TOP NOTCH TN6917PS, TOP NOTCH TN6931PS and CARDONE 655032 and the remaining parts above.

This table covers the gear oils specified for the axle or transfer case. Typical signs include a low-oil lamp, knocking, or oil that has gone thin before the next interval. Match the viscosity and spec in the notes, not just the weight on the bottle. Read more

3 Gear Oil parts for the 2021 Toyota 4RUNNER come from 2 brands — VALVOLINE and IDEMITSU.

Listed part numbers: IDEMITSU 30305024750, VALVOLINE 915052 and VALVOLINE 915053.

This table covers the seals at the Transfer Case Input 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 2021 Toyota 4RUNNER — SKF 17300.

This table covers the Transfer Case motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

6 Transfer Case Motor parts are listed for the 2021 Toyota 4RUNNER, from DORMAN, WAI GLOBAL, STANDARD MOTOR PRODUCTS and 1 other brand. DORMAN 600493 carries the "Popular" badge.

Part numbers include DORMAN 600493, DORMAN 600423 and STANDARD MOTOR PRODUCTS TCM118, among others listed above.

This table covers the U-joints in the driveshaft. Read more

9 Universal Joint parts for the 2021 Toyota 4RUNNER come from 5 brands — MOOG, DANA, GKN and 2 other brands. The "Popular" part is DANA 51510X.

The Economy section: 1 option from DANA. DANA 251510X is listed in this group.

Heavy Duty: 4 parts, from MOOG, FVP and GMB. A representative part number is FVP 2150021.

Standard Replacement: 4 parts, from GKN, DANA and MOOG. A representative part number is DANA 51510X.

This group includes DANA 51510X, DANA 251510X and FVP 2150021 and the remaining parts above.