2021 Toyota Tundra 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

2 4WD Actuator parts are listed for the 2021 Toyota Tundra, from STANDARD MOTOR PRODUCTS and WELLS.

Part numbers include STANDARD MOTOR PRODUCTS TCA104 and WELLS 1S15514.

This table covers the seals at the Axle Intermediate 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 Tundra — TIMKEN 710595.

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

One part is listed for the 2021 Toyota Tundra — SKF R617.

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

5 Axle Shaft Seal parts for the 2021 Toyota Tundra come from 3 brands — SKF, TIMKEN and WJB / INMOTION PARTS. The "Popular" part is SKF 18478.

Listed part numbers: SKF 18478, SKF 18195A and TIMKEN 710596, plus the other 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

10 CV Axle parts for the 2021 Toyota Tundra come from 5 brands — GSP, TRAKMOTIVE, TOP NOTCH and 2 other brands. The "Popular" part is APWI TO8363.

The Economy section lists 1 option from CARDONE — the catalog's value-priced group. CARDONE 605252 is listed in this group.

In the Heavy Duty grade, GSP and TRAKMOTIVE supply 2 parts: rated for severe service. A representative part number is GSP NCV69164XD.

In the Specialty - For Lifted Vehicles grade, GSP, TOP NOTCH and TRAKMOTIVE supply 3 parts: grouped under the catalog's "Specialty - For Lifted Vehicles" designation — the notes column spells out what sets them apart. A representative part number is GSP NCV69164XDP.

In the Standard Replacement grade, APWI, TOP NOTCH, GSP and 1 other brand supply 4 parts: built to original-equipment specification. A representative part number is APWI TO8363.

This table covers the CV Intermediate shafts. Read more

One part is listed for the 2021 Toyota Tundra — TRAKMOTIVE TO3512.

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

2 CV Joint Boot parts for the 2021 Toyota Tundra come from BECK/ARNLEY.

Listed part numbers: BECK/ARNLEY 1033133 and BECK/ARNLEY 1032872.

This table covers the carriers that hold the differential gears in the axle. Read more

This group shows a single part: USA STANDARD GEAR USA15862.

This table covers the bearings and races that support the differential carrier. Read more

This group shows a single part: NSK R5534U42.

This table covers the Differential Crush sleeves. Read more

SKF supplies both parts for the 2021 Toyota Tundra.

Part numbers include SKF KRS153 and SKF KRS152.

This table covers the Differential Lock actuators. 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: DORMAN 600420.

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

SKF supplies the 4 Differential Pinion Bearing / Race parts for the 2021 Toyota Tundra.

Part numbers include SKF BR3360, SKF BR30308 and SKF BR158, among others listed above.

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

5 Differential Pinion Seal parts for the 2021 Toyota Tundra come from 2 brands — SKF and WJB / INMOTION PARTS. The "Popular" part is SKF 19802.

Listed part numbers: SKF 19802, SKF 17779A and SKF 18168A, plus the other parts above.

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

8 Differential Rebuild Kit parts are listed for the 2021 Toyota Tundra, from BCA, MOTIVE GEAR, LUK and 1 other brand.

In the Master Kit grade, BCA and MOTIVE GEAR supply 3 parts: grouped under the catalog's "Master Kit" designation — the notes column spells out what sets them apart. A representative part number is BCA NBDRK381MK.

The Standard Kit section lists 4 options from BCA, LUK and USA STANDARD GEAR — grouped under the catalog's "Standard Kit" designation — the notes column spells out what sets them apart. BCA NBDRK381 is listed in this group.

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

This group includes BCA NBDRK381MK, BCA NBDRK382MK and MOTIVE GEAR RT95RMK and the remaining parts above.

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

6 Drive Shaft parts are listed for the 2021 Toyota Tundra, from DORMAN, TOP NOTCH, CARDONE and 1 other brand. DORMAN 986133 carries the "Popular" badge.

This group includes DORMAN 986133, TOP NOTCH TN6922PS and CARDONE 655046 and the remaining parts above.

This table covers the Drive Shaft Center Support 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

7 Drive Shaft Center Support Bearing parts are listed for the 2021 Toyota Tundra, from WESTAR, DANA, ANCHOR and 1 other brand. SKP SK934401 carries the "Popular" badge.

Economy: 3 parts, from WESTAR and SKP. A representative part number is SKP SK934401.

The Standard Replacement section: 4 options from DANA and ANCHOR. DANA 2117501X is listed in this group.

Listed part numbers: SKP SK934401, WESTAR DS5225 and WESTAR DS5227, plus the other 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

5 Gear Oil parts for the 2021 Toyota Tundra come from 2 brands — VALVOLINE and IDEMITSU.

Part numbers include IDEMITSU 30305024750, VALVOLINE 892683 and VALVOLINE 892802, among others listed above.

This table covers the fluids specified for the transfer case. Typical signs include discolored fluid, a burnt smell, or a level that keeps dropping. Use only the specification in the notes — the tables group grades because they are not interchangeable. Read more

2 Transfer Case Fluid parts for the 2021 Toyota Tundra come from IDEMITSU.

Part numbers include IDEMITSU 30305075750 and IDEMITSU 30305024750.

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

NATIONAL supplies both parts for the 2021 Toyota Tundra.

This group includes NATIONAL 711169 and NATIONAL 711170.

This table covers the seals at the Transfer Case Output 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

3 Transfer Case Output Shaft Seal parts for the 2021 Toyota Tundra come from 3 brands — NATIONAL, SKF and WJB / INMOTION PARTS.

Listed part numbers: NATIONAL 711171, SKF 20350A and WJB / INMOTION PARTS WS20350A.

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

9 Universal Joint parts for the 2021 Toyota Tundra come from 3 brands — MOOG, ACDELCO and GMB. The "Popular" part is MOOG 270.

Heavy Duty: 4 parts, from MOOG and ACDELCO. A representative part number is MOOG 270.

Standard Replacement: 5 parts, from MOOG, ACDELCO and GMB. A representative part number is MOOG 354.

Part numbers include MOOG 270, ACDELCO 45U0109 and ACDELCO 45U0123, among others listed above.