This page lists 12 electrical parts for the 2018 BMW 120I, across 7 part types, covering the 2.0L L4 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
The electrical system on the 2018 BMW 120I covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. The largest groups are Parking Aid Sensor (3 parts), Alternator / Generator (2 parts) and Rain Sensor (2 parts). The other 4 part types cover the remaining 5 parts.
Every part on this page is matched to the 2.0L L4 Turbocharged — the only engine offered in the 2018 BMW 120I.
The most listed brands for 2018 BMW 120I electrical parts are MARELLI (4 parts), FVP (2 parts) and PURE ENERGY (2 parts), plus 3 more brands.
Each part number listed for the 2018 BMW 120I opens a page with every vehicle that part fits.
Alternator / Generator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | 10361 | 🇲🇽 MX | Remanufactured | View on Amazon |
| PURE ENERGY | 10361 | 🇲🇽 MX | Remanufactured | 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.
2 Alternator / Generator parts are listed for the 2018 BMW 120I, from FVP and PURE ENERGY.
Part numbers include FVP 10361, among others listed above.
Battery
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA | 9A48 | 🇲🇽 MX | IntimidatorAGM | View on Amazon |
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.
This group shows a single part: DEKA 9A48.
HID Lighting Ballast
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 601091 | 🇲🇽 MX | View on Amazon |
This table covers the HID Lighting ballasts.
One part is listed for the 2018 BMW 120I — DORMAN 601091.
Lighting Control Module (LCM)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MARELLI | LRE703 | 🇲🇽 MX | LED | View on Amazon |
This table covers the modules that control the exterior lighting.
One part is listed for the 2018 BMW 120I — MARELLI LRE703.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MARELLI | SDP004 | 🇲🇽 MX | Fits Right | View on Amazon |
| MARELLI | SDP005 | 🇲🇽 MX | Front | View on Amazon |
| MARELLI | SDP006 | 🇲🇽 MX | Front | 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.
MARELLI supplies the 3 Parking Aid Sensor parts for the 2018 BMW 120I.
This group includes MARELLI SDP004, MARELLI SDP005 and MARELLI SDP006.
Rain Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 011790701 | 🇲🇽 MX | 3-Pin ConnectorClipped | View on Amazon |
| HELLA | 011808701 | 🇲🇽 MX | Exc. SA Code 610A3-Pin Connector | 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.
HELLA supplies both parts for the 2018 BMW 120I.
This group includes HELLA 011790701 and HELLA 011808701.
Starter Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | 12864 | 🇲🇽 MX | Remanufactured | View on Amazon |
| PURE ENERGY | 12864 | 🇲🇽 MX | 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.
2 Starter Motor parts are listed for the 2018 BMW 120I, from FVP and PURE ENERGY.
Listed part numbers: FVP 12864, plus the other parts above.
Buying Electrical Parts for a 2018 BMW 120I
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 2.0L L4 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: Parking Aid Sensor and Alternator / Generator .
Frequently Asked Questions
How many electrical parts fit the 2018 BMW 120I?
Our catalog currently lists 12 electrical parts for the 2018 BMW 120I across 7 subcategories and 6 brands, covering the 2.0L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical problems on a 2018 BMW 120I?
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 2018 BMW 120I 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 2018 BMW 120I?
Every part on this page is matched to the 2.0L L4 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 2018 BMW 120I
Electrical Parts for Other BMW 120I Years
Switch vehicle or jump to a subcategory
Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.