2021 Ford Expedition 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

4 Alternator / Generator parts are listed for the 2021 Ford Expedition, from WAI GLOBAL, FVP, PURE ENERGY and 1 other brand.

In the New grade, WAI GLOBAL supplies 1 part: brand-new units rather than rebuilt ones. A representative part number is WAI GLOBAL 41008N.

In the Remanufactured grade, FVP, PURE ENERGY and TERREPOWER supply 3 parts: factory-rebuilt units with new wear components. A representative part number is FVP 10422.

Part numbers include WAI GLOBAL 41008N and FVP 10422, among others listed 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

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

Part numbers include CONTINENTAL 49907, LITENS 920088A and MOTORCRAFT GP776.

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

16 Battery parts for the 2021 Ford Expedition 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.

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 Expedition.

Part numbers include MOTORCRAFT WC96758 and MOTORCRAFT WC97521.

This table covers the Battery Current sensors. 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

One part is listed for the 2021 Ford Expedition — WELLS 5S15941.

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

28 Battery Terminal parts for the 2021 Ford Expedition 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 Blind Spot Detection sensors. 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

One part is listed for the 2021 Ford Expedition — STANDARD MOTOR PRODUCTS BSD134.

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

6 Circuit Breaker parts for the 2021 Ford Expedition come from MOTORCRAFT. The "Popular" part is MOTORCRAFT SW8886.

Listed part numbers: MOTORCRAFT SW8886, MOTORCRAFT SW8226 and MOTORCRAFT SW8887, plus the other parts above.

This table covers the Cruise Control Distance sensors. 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

This group shows a single part: DORMAN 601728.

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

One part is listed for the 2021 Ford Expedition — MOTORCRAFT ECMB7.

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 Expedition 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.

This group includes BUSSMANN FMS25, BUSSMANN FMS15 and BUSSMANN FMS20 and the remaining parts above.

This table covers the Fuse Box covers. Read more

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

This group includes MOTORCRAFT HLSC16 and MOTORCRAFT HLSC17.

This table covers the HID Lighting ballasts. Read more

2 HID Lighting Ballast parts are listed for the 2021 Ford Expedition, from DORMAN and STANDARD MOTOR PRODUCTS.

Part numbers include DORMAN 601917 and STANDARD MOTOR PRODUCTS HID172.

This table covers the horns mounted in the front of the vehicle. Read more

3 Horn parts for the 2021 Ford Expedition come from 2 brands — MOTORCRAFT and DORMAN.

Part numbers include DORMAN 926568, MOTORCRAFT HRN1 and MOTORCRAFT HRN28.

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

DORMAN supplies the 5 Keyless Entry Remote parts for the 2021 Ford Expedition. DORMAN 99294ST carries the "Popular" badge.

Part numbers include DORMAN 99294ST, DORMAN 99780ST and DORMAN 99294, among others listed above.

This table covers the replacement shells for the key fob. Read more

One part is listed for the 2021 Ford Expedition — DORMAN 95351.

This table covers the modules that control the exterior lighting. Read more

One part is listed for the 2021 Ford Expedition — VEMO V25730152.

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

9 Parking Aid Sensor parts are listed for the 2021 Ford Expedition, from DORMAN, STANDARD MOTOR PRODUCTS, MOTORCRAFT and 2 other brands. DORMAN 684132 carries the "Popular" badge.

Part numbers include DORMAN 684132, STANDARD MOTOR PRODUCTS PPS153 and DORMAN 684107, among others listed above.

This table covers the Rain sensors. 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

One part is listed for the 2021 Ford Expedition — MOTORCRAFT WRS5.

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 Expedition — DORMAN 601502.

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

8 Speed Sensor parts for the 2021 Ford Expedition come from 3 brands — STANDARD MOTOR PRODUCTS, MOTORCRAFT and DELPHI. The "Popular" part is MOTORCRAFT DY1506.

This group includes MOTORCRAFT DY1506, MOTORCRAFT DY1400 and DELPHI SS12396 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

5 Starter Motor parts are listed for the 2021 Ford Expedition, from VALEO, MOTORCRAFT, PURE ENERGY and 2 other brands. VALEO 849503 carries the "Popular" badge.

New: 2 parts, from VALEO and MOTORCRAFT. A representative part number is VALEO 849503.

Remanufactured: 3 parts, from PURE ENERGY, REMY and TERREPOWER. A representative part number is PURE ENERGY 12916.

Listed part numbers: VALEO 849503, MOTORCRAFT SA1147 and PURE ENERGY 12916, plus the other parts above.