2021 BMW X3 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 for the 2021 BMW X3 come from 4 brands — PURE ENERGY, FVP, REMY and 1 other brand. The "Popular" part is PURE ENERGY 10396.

The New section lists 1 option from BOSCH — brand-new units rather than rebuilt ones. BOSCH AL0794N is listed in this group.

The Remanufactured section lists 8 options from PURE ENERGY and FVP — factory-rebuilt units with new wear components. PURE ENERGY 10396 is listed in this group.

8 further parts sit outside the graded sections, 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

31 Battery parts are listed for the 2021 BMW X3, from ACDELCO, DEKA, FVP and 6 other brands. ACDELCO 47AGM carries the "Popular" badge. They are grouped as AGM (Extended Life) and Performance AGM (Extended Life + Increased Power), with AGM (Extended Life) the largest group at 28 parts from ACDELCO, DEKA, FVP and 5 other brands.

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

2 Daytime Running Light Module parts for the 2021 BMW X3 come from ÜRO PARTS.

This group includes ÜRO PARTS 63117466107 and ÜRO PARTS 63117466108.

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

2 Lighting Control Module (LCM) parts for the 2021 BMW X3 come from MARELLI.

Listed part numbers: 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 for the 2021 BMW X3 come from 4 brands — MARELLI, STANDARD MOTOR PRODUCTS, DORMAN and 1 other brand. The "Popular" part is STANDARD MOTOR PRODUCTS PPS120.

This group includes STANDARD MOTOR PRODUCTS PPS120, DORMAN 684134 and MARELLI SDP101 and the remaining parts above.

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

This group shows a single part: VARIOUS MFR BM1074122.

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

10 Starter Motor parts for the 2021 BMW X3 come from 6 brands — VALEO, WAI GLOBAL, FVP and 3 other brands. The "Popular" part is VALEO 438514.

The New section: 4 options from VALEO and WAI GLOBAL. VALEO 438514 is listed in this group.

The Remanufactured section: 6 options from FVP, PURE ENERGY, BOSCH and 1 other brand. BOSCH SR6597X is listed in this group.