2021 Ford Bronco 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

9 Alternator / Generator parts are listed for the 2021 Ford Bronco, from FVP, PURE ENERGY, MOTORCRAFT and 2 other brands. MOTORCRAFT GL8957 carries the "Popular" badge.

In the New grade, MOTORCRAFT supplies 1 part: brand-new units rather than rebuilt ones. A representative part number is MOTORCRAFT GL8957.

In the Remanufactured grade, FVP, PURE ENERGY, REMY and 1 other brand supply 4 parts: factory-rebuilt units with new wear components. A representative part number is FVP 11835.

4 ungrouped parts are not assigned to a grade, with the same engine-level match.

This group includes MOTORCRAFT GL8957 and FVP 11835 and the remaining parts above.

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

7 Alternator / Generator Pulley parts for the 2021 Ford Bronco come from 3 brands — CONTINENTAL, LITENS and MOTORCRAFT.

This group includes CONTINENTAL 48707, CONTINENTAL 48709 and CONTINENTAL 49901 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

23 Battery parts for the 2021 Ford Bronco come from 8 brands — ACDELCO, DEKA, FVP and 5 other brands. The "Popular" part is DEKA 9A48.

In the AGM (Extended Life) grade, ACDELCO, DEKA, FVP and 4 other brands supply 15 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is DEKA 9A48.

In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 1 part: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT85094R.

7 further parts sit outside the graded sections, with the same engine-level match.

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

MOTORCRAFT supplies both parts for the 2021 Ford Bronco.

This group includes MOTORCRAFT WC97434 and MOTORCRAFT WC98241.

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

30 Battery Terminal parts for the 2021 Ford Bronco come from MOTORCRAFT. The "Popular" part is MOTORCRAFT WT1012. A list this long means Battery Terminal applications vary by configuration — the notes carry the qualifiers.

This table covers the brackets that mount the Blind Spot Detection Sensor. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

MOTORCRAFT supplies the 4 Blind Spot Detection Sensor Bracket parts for the 2021 Ford Bronco.

This group includes MOTORCRAFT BSSB22, MOTORCRAFT BSSB7 and MOTORCRAFT BSSB8 and the remaining parts above.

This table covers the resettable circuit breakers in this vehicle's electrical system. Read more

12 Circuit Breaker parts for the 2021 Ford Bronco come from MOTORCRAFT. The "Popular" part is MOTORCRAFT SW8879.

This table covers the brackets that mount the Engine Control Module (ECM Computer). Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

MOTORCRAFT supplies both parts for the 2021 Ford Bronco.

Listed part numbers: MOTORCRAFT ECMB14 and MOTORCRAFT ECMB15.

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

6 Fuse parts for the 2021 Ford Bronco come from BUSSMANN. The "Popular" part is BUSSMANN FMS25.

The 15 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "15 Amp" designation — the notes column spells out what sets them apart. BUSSMANN FMS15 is listed in this group.

The 20 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "20 Amp" designation — the notes column spells out what sets them apart. BUSSMANN FMS20 is listed in this group.

In the 25 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "25 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN FMS25.

The 40 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "40 Amp" designation — the notes column spells out what sets them apart. BUSSMANN FMS40 is listed in this group.

In the 50 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "50 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN FMS50.

The 60 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "60 Amp" designation — the notes column spells out what sets them apart. BUSSMANN FMS60 is listed in this group.

Part numbers include BUSSMANN FMS25, BUSSMANN FMS15 and BUSSMANN FMS20, among others listed above.

This table covers the Fuse Box covers. Read more

2 Fuse Box Cover parts for the 2021 Ford Bronco come from MOTORCRAFT.

Listed part numbers: MOTORCRAFT HLSC19 and MOTORCRAFT HLSC28.

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

One part is listed for the 2021 Ford Bronco — DORMAN 99286ST.

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

11 Parking Aid Sensor parts are listed for the 2021 Ford Bronco, from TECHPRO, VARIOUS MFR, DORMAN and 2 other brands. DORMAN 684107 carries the "Popular" badge.

This table covers the brackets that mount the Parking Aid Sensor. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

16 Parking Aid Sensor Bracket parts are listed for the 2021 Ford Bronco, from TECHPRO and VARIOUS MFR. TECHPRO FO1076102 carries the "Popular" badge.

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

One part is listed for the 2021 Ford Bronco — DORMAN 601505.

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

15 Speed Sensor parts for the 2021 Ford Bronco come from 4 brands — MOTORCRAFT, STANDARD MOTOR PRODUCTS, DELPHI and 1 other brand. The "Popular" part is MOTORCRAFT DY1719.

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

15 Starter Motor parts are listed for the 2021 Ford Bronco, from PURE ENERGY, MOTORCRAFT, FVP and 3 other brands. MOTORCRAFT SA1175 carries the "Popular" badge.

New: 4 parts, from MOTORCRAFT and VALEO. A representative part number is MOTORCRAFT SA1175.

Remanufactured: 11 parts, from PURE ENERGY, FVP, REMY and 1 other brand. A representative part number is FVP 12881.