5 Electrical parts are listed for the 2018 BMW 318I, in 3 part types, covering the 1.5L L3 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2018 BMW 318I, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. All 5 listed parts are Battery Vent Tube (2 parts), Parking Aid Sensor (2 parts) and Lighting Control Module (LCM) (1 part).
The 2018 BMW 318I came with a single engine, the 1.5L L3 Turbocharged, and every part is verified against it.
3 brands supply electrical parts for the 2018 BMW 318I, led by MARELLI (3 parts), DORMAN (1 part) and SKP (1 part).
Each part number listed for the 2018 BMW 318I opens a page with every vehicle that part fits.
Battery Vent Tube
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 924254 | 🇲🇽 MX | View on Amazon | |
| SKP | SK924254 | 🇲🇽 MX | View on Amazon |
This table covers the Battery Vent tubes.
2 Battery Vent Tube parts for the 2018 BMW 318I come from 2 brands — DORMAN and SKP.
Listed part numbers: DORMAN 924254 and SKP SK924254.
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.
This group shows a single part: MARELLI LRE703.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MARELLI | SDP004 | 🇲🇽 MX | Fits Right | 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.
2 Parking Aid Sensor parts for the 2018 BMW 318I come from MARELLI.
This group includes MARELLI SDP004 and MARELLI SDP006.
Buying Electrical Parts for a 2018 BMW 318I
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 1.5L L3 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: Battery Vent Tube and Parking Aid Sensor .
Frequently Asked Questions
How many electrical parts fit the 2018 BMW 318I?
Our catalog currently lists 5 electrical parts for the 2018 BMW 318I across 3 subcategories and 3 brands, covering the 1.5L L3 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical problems on a 2018 BMW 318I?
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 318I 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 318I?
Every part on this page is matched to the 1.5L L3 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 318I
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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.