18 Electrical parts are listed for the 2021 BMW M3, in 6 part types, covering the 3.0L L6 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 BMW M3, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. Most of the listed parts are Alternator / Generator (5 parts), Parking Aid Sensor (5 parts) and Starter Motor (4 parts). The other 3 part types cover the remaining 4 parts.
Every part on this page is matched to the 3.0L L6 Turbocharged — the only engine offered in the 2021 BMW M3.
The most listed brands for 2021 BMW M3 electrical parts are BOSCH (3 parts), VEMO (3 parts) and WAI GLOBAL (2 parts), plus 7 more brands. Quality grades include Remanufactured and New.
2 parts on this 2021 BMW M3 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including PURE ENERGY 14060 (Alternator / Generator) and STANDARD MOTOR PRODUCTS PPS183 (Parking Aid Sensor). Click any part number to see every vehicle that part fits.
Alternator / Generator
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | AL0794N | 🇺🇸 US 🇨🇦 CA | 250 Amps | View on Amazon |
| WAI GLOBAL | 21075N | 🇺🇸 US 🇨🇦 CA | 250 Amps | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PURE ENERGY Popular | 14060 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| FVP | 14060 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALEO | 443451 | 🇺🇸 US 🇨🇦 CA | 250 Amps | View on Amazon |
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.
5 Alternator / Generator parts are listed for the 2021 BMW M3, from BOSCH, WAI GLOBAL, PURE ENERGY and 2 other brands. PURE ENERGY 14060 carries the "Popular" badge.
In the New grade, BOSCH and WAI GLOBAL supply 2 parts: brand-new units rather than rebuilt ones. A representative part number is BOSCH AL0794N.
In the Remanufactured grade, PURE ENERGY and FVP supply 2 parts: factory-rebuilt units with new wear components. A representative part number is PURE ENERGY 14060.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Listed part numbers: PURE ENERGY 14060, BOSCH AL0794N and WAI GLOBAL 21075N, plus the other parts above.
Daytime Running Light Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 63118496133 | 🇺🇸 US 🇨🇦 CA | Frontwithout Adaptive LED Lights | View on Amazon |
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.
One part is listed for the 2021 BMW M3 — ÜRO PARTS 63118496133.
Lighting Control Module (LCM)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V20730305 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VEMO | V20730307 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the modules that control the exterior lighting.
VEMO supplies both parts for the 2021 BMW M3.
Part numbers include VEMO V20730305 and VEMO V20730307.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | PPS183 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| BOSCH | F00E270801 | 🇺🇸 US 🇨🇦 CA | Fits Rear | View on Amazon |
| BOSCH | F00E270803 | 🇺🇸 US 🇨🇦 CA | Front Outer | View on Amazon |
| VARIOUS MFR | BM1075104 | 🇺🇸 US 🇨🇦 CA | Customer Paints to Match | View on Amazon |
| VARIOUS MFR | BM1075106 | 🇺🇸 US 🇨🇦 CA | Customer Paints to Match | View on Amazon |
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.
5 Parking Aid Sensor parts are listed for the 2021 BMW M3, from BOSCH, VARIOUS MFR and STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS PPS183 carries the "Popular" badge.
Listed part numbers: STANDARD MOTOR PRODUCTS PPS183, BOSCH F00E270801 and BOSCH F00E270803, plus the other parts above.
Rain Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V20720202 | 🇺🇸 US 🇨🇦 CA | Clipped | View on Amazon |
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.
One part is listed for the 2021 BMW M3 — VEMO V20720202.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL | 31413N | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | 12883 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY | 12883 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY | 16420 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
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.
4 Starter Motor parts are listed for the 2021 BMW M3, from WAI GLOBAL, FVP, PURE ENERGY and 1 other brand.
New: 1 part, from WAI GLOBAL. A representative part number is WAI GLOBAL 31413N.
Remanufactured: 3 parts, from FVP, PURE ENERGY and REMY. A representative part number is FVP 12883.
This group includes WAI GLOBAL 31413N and FVP 12883 and the remaining parts above.
Buying Electrical Parts for a 2021 BMW M3
On this vehicle, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.
- Confirm you have the 3.0L L6 Turbocharged engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, clean or renew the battery terminals and grounds with any charging-system repair.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Alternator / Generator and Parking Aid Sensor .
Frequently Asked Questions
How many electrical parts fit the 2021 BMW M3?
Our catalog currently lists 18 electrical parts for the 2021 BMW M3 across 6 subcategories and 10 brands, covering the 3.0L L6 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical problems on a 2021 BMW M3?
Common symptoms include slow cranking on cold mornings, a battery light that flickers, dim lights at idle, or a check-engine code pointing at a sensor circuit. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, clean or renew the battery terminals and grounds with any charging-system repair.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2021 BMW M3 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2021 BMW M3?
Every part on this page is matched to the 3.0L L6 Turbocharged engine. Then test before replacing — a failed alternator and a bad ground can look identical, and sensors are frequently condemned for wiring faults. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 BMW M3
Electrical Parts for Other BMW M3 Years
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