2021 Toyota Tacoma Electrical Parts

This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator. Read more

14 Alternator / Generator parts for the 2021 Toyota Tacoma come from 9 brands — WAI GLOBAL, PURE ENERGY, FVP and 6 other brands. The "Popular" part is SKP SK10325.

The New section lists 5 options from WAI GLOBAL, SKP, TYC and 1 other brand — brand-new units rather than rebuilt ones. SKP SK10325 is listed in this group.

The Remanufactured section lists 9 options from PURE ENERGY, FVP, REMY and 2 other brands — factory-rebuilt units with new wear components. PURE ENERGY 10324 is listed in this group.

This table covers the pulleys on the alternator shaft. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

4 Alternator / Generator Pulley parts are listed for the 2021 Toyota Tacoma, from ACDELCO, AUTOTECNICA, CONTINENTAL and 1 other brand.

This group includes ACDELCO 37026P, AUTOTECNICA TY1416792 and CONTINENTAL 49916 and the remaining parts above.

This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery. Read more

7 Battery parts are listed for the 2021 Toyota Tacoma, from DEKA, BOSCH, EXIDE and 2 other brands. DEKA 9A3585 carries the "Popular" badge. All of them fit every engine offered in the 2021 Tacoma.

Part numbers include DEKA 9A3585, DEKA 9A34R and BOSCH S6523B, among others listed above.

This table covers the positive and ground cables that run from the battery. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early. Read more

This group shows a single part: STANDARD MOTOR PRODUCTS A532UD.

This table covers the terminals and clamps that connect cables to the battery posts. Read more

3 Battery Terminal parts are listed for the 2021 Toyota Tacoma, from BECK/ARNLEY, DORMAN and STANDARD MOTOR PRODUCTS. All of them fit every engine offered in the 2021 Tacoma.

Listed part numbers: BECK/ARNLEY 2060001, DORMAN 926515 and STANDARD MOTOR PRODUCTS BP100P.

This table covers the replacement fuses for this vehicle's fuse boxes. Typical signs include one circuit dead while its neighbor still works, or a fuse that blows again as soon as you replace it. Match amperage and fuse type. A repeat blow means a short — find it before the next fuse. Read more

BUSSMANN supplies the 3 Fuse parts for the 2021 Toyota Tacoma. All of them fit every engine offered in the 2021 Tacoma.

Part numbers include BUSSMANN MPF2534X, BUSSMANN MPF2555X and BUSSMANN MPF2444X.

This table covers the key fobs that lock, unlock and start the vehicle. Read more

This group shows a single part: DORMAN 99685ST.

This table covers the ultrasonic park-aid sensors in the bumper. 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

5 Parking Aid Sensor parts for the 2021 Toyota Tacoma come from 5 brands — STANDARD MOTOR PRODUCTS, AUTOTECNICA, TECHPRO and 2 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS PPS65. 4 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: STANDARD MOTOR PRODUCTS PPS65, AUTOTECNICA TY1320987 and TECHPRO TO1175100, plus the other parts above.

This table covers the Side Object Sensor modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

This group shows a single part: DORMAN 601474.

This table covers the speed sensors on the transmission, transfer case or ABS ring. Typical signs include a dead speedometer, harsh transmission shifts, or a code for vehicle speed. Inspect the tone wheel and the connector before replacing the sensor. Read more

6 Speed Sensor parts are listed for the 2021 Toyota Tacoma, from ULTRA-POWER, BECK/ARNLEY, HOLSTEIN and 3 other brands. ULTRA-POWER SC658 carries the "Popular" badge. All of them fit every engine offered in the 2021 Tacoma.

In the Economy grade, ULTRA-POWER, BECK/ARNLEY and HOLSTEIN supply 3 parts: the catalog's value-priced group. A representative part number is ULTRA-POWER SC658.

The Standard Replacement section lists 3 options from DELPHI, STANDARD MOTOR PRODUCTS and WALKER PRODUCTS — built to original-equipment specification. DELPHI SS12255 is listed in this group.

This group includes ULTRA-POWER SC658, BECK/ARNLEY 0900013 and HOLSTEIN 2VSS0532 and the remaining parts above.

This table covers the starter motors that crank the engine. 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

14 Starter Motor parts for the 2021 Toyota Tacoma come from 9 brands — BOSCH, PURE ENERGY, FVP and 6 other brands. The "Popular" part is TYC 116370.

The New section: 4 options from TYC, BOSCH, VALEO and 1 other brand. TYC 116370 is listed in this group.

The Remanufactured section: 10 options from PURE ENERGY, FVP, REMY and 3 other brands. FAMOUS BRAND 19623S is listed in this group.