2021 BMW X4 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

17 Alternator / Generator parts are listed for the 2021 BMW X4, from PURE ENERGY, FVP, REMY and 1 other brand. PURE ENERGY 10396 carries the "Popular" badge.

In the New grade, BOSCH supplies 1 part: brand-new units rather than rebuilt ones. A representative part number is BOSCH AL0794N.

In the Remanufactured grade, PURE ENERGY and FVP supply 8 parts: factory-rebuilt units with new wear components. A representative part number is PURE ENERGY 10396.

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

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

20 Battery parts for the 2021 BMW X4 come from 9 brands — ACDELCO, MOTORCRAFT, DEKA and 6 other brands. The "Popular" part is FVP PLN1AGM. Every part fits both the 2.0L L4 Turbocharged and the 3.0L L6 Turbocharged.

In the AGM (Extended Life) grade, ACDELCO, MOTORCRAFT, DEKA and 5 other brands supply 19 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is FVP PLN1AGM.

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 FT89049.

This table covers the Daytime Running Light 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

ÜRO PARTS supplies both parts for the 2021 BMW X4. All of them fit every engine offered in the 2021 X4.

This group includes ÜRO PARTS 63117466107 and ÜRO PARTS 63117466108.

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

MARELLI supplies both parts for the 2021 BMW X4. All of them fit every engine offered in the 2021 X4.

Part numbers include MARELLI LRE568 and MARELLI LRE570.

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 are listed for the 2021 BMW X4, from MARELLI, STANDARD MOTOR PRODUCTS, DORMAN and 1 other brand. STANDARD MOTOR PRODUCTS PPS120 carries the "Popular" badge. All of them fit every engine offered in the 2021 X4.

Part numbers include STANDARD MOTOR PRODUCTS PPS120, DORMAN 684134 and MARELLI SDP101, among others listed 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

9 Starter Motor parts are listed for the 2021 BMW X4, from WAI GLOBAL, FVP, PURE ENERGY and 3 other brands. VALEO 438514 carries the "Popular" badge.

New: 3 parts, from WAI GLOBAL and VALEO. A representative part number is VALEO 438514.

Remanufactured: 6 parts, from FVP, PURE ENERGY, BOSCH and 1 other brand. A representative part number is BOSCH SR6597X.

Part numbers include VALEO 438514, WAI GLOBAL 31294N and WAI GLOBAL 31413N, among others listed above.