Genuine BMW MINI Ignition Coil Pack B36 B38 B46 B48 B58 | OEM Part Number 12138643360 | Fits 1/2/3/4/5/6/7/8 Series, X1X7, Z4, i8 (e.g. 120i 330i 430i 540i 740i M140i 840i)

OE plug-top coil for BMW and MINI B-series petrol engines - Part No. 12138643360

Bring back crisp throttle response and smooth running with this original equipment coil-on-plug unit for BMW and MINI turbo petrol B36, B38, B46, B48 and B58 engines. It is a straight swap for the factory item with the correct connectors and boot, delivering stable spark energy to cure misfire, hesitation, rough idle and poor economy.

We run these on our own cars and customer vehicles and the feedback is consistently positive. Smoother idle, stronger pull and fault-free operation once the tired coil is replaced. If your car feels flat or is logging ignition faults, this OE plug-top coil is the proven fix.

Key advantages

• Original equipment specification for perfect fit and factory reliability
• Direct swap - no coding, no modification, plug in and drive
• Restores clean combustion and stable idle on B-series petrol engines
• Ideal preventive maintenance for tuned, high-mileage or track-driven cars
• Compatible with standard and xDrive models across multiple chassis

Typical signs your coil needs replacing

• Misfire at idle or under load
• Engine light with ignition related fault codes
• Flat spots, hesitation and reduced performance
• Higher fuel consumption than usual
• Hard starting or intermittent stumble

What you receive

1 x OE plug-top ignition coil

Note: purchase one unit per cylinder. Replacing the full set together is recommended for consistent results.

Part number

12138643360

Vehicle applications

For BMW and MINI models running B36, B38, B46, B48 and B58 petrol engines. Popular applications include:

• BMW 1 Series F20 F21 F40 - 116i, 118i, 120i, 125i, M140i, including xDrive
• BMW 2 Series F22 F23 F44 F45 F46 - 216i, 218i, 220i, 225i, 225xe, 230i, M240i, including xDrive
• BMW 3 Series F30 F31 F34 LCI, G20 G21 - 318i, 320i, 330i, 330e, 340i, M340i, including xDrive
• BMW 4 Series F32 F33 F36 - 418i, 420i, 430i, 440i, including xDrive
• BMW 5 Series G30 G31 - 520i, 530i, 530e, 540i, including xDrive
• BMW 6 Series G32 GT - 630i, 640i, including xDrive
• BMW 7 Series G11 G12 - 730i, 740e, 740i, 745e, including long wheelbase and xDrive
• BMW 8 Series G14 G15 G16 - 840i, including xDrive
• BMW i8 I12 I15 Roadster
• BMW X1 F48 - 18i, 20i, 25i, 28i, including xDrive
• BMW X2 F39 - 18i, 20i, 25i, 28i, M35i, including xDrive
• BMW X3 G01 - 20i, 30i, 30e, M40i, including xDrive
• BMW X4 G02 - 20i, 30i, M40i, including xDrive
• BMW X5 G05 - xDrive30i, xDrive40i, 45e
• BMW X6 G06 - 40i, including xDrive
• BMW X7 G07 - xDrive40i
• BMW Z4 G29 - 20i, 30i, M40i
• MINI F54 F55 F56 F57 F60 - One, One First, Cooper, Cooper S, JCW, ALL4 variants, Countryman and Clubman

Unsure about compatibility? We will confirm fitment before dispatch.

Fitment check

Add your UK registration or last 7 of your VIN at checkout. We will verify the correct part for your vehicle prior to shipping.

Installation and support

Simple like-for-like replacement using the factory connector and retaining clip. Professional fitting available at MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Manufacturer

BMW original equipment

Warranty

Two years manufacturer warranty for UK customers and one year for international customers when VIN is provided at checkout on compatible vehicles.

Helpful search phrases

BMW spark coil B58, BMW coil-on-plug B48, plug top coil B38, ignition coil unit B46, COP module B36, BMW misfire fix coil, plug top ignition transformer, replacement coil 12138643360, BMW 12138643360 coil, MINI 12138643360, B58 coil replacement M140i M340i 540i 740i 840i, B48 coil replacement 118i 120i 320i 330i 520i 530i, B38 coil replacement 116i 218i 318i 418i, i8 ignition coil, Z4 M40i coil, X1 X2 X3 X4 X5 X6 X7 petrol coil, OEM spec coil pack for BMW MINI, coil pack for rough idle, fix hesitation BMW petrol turbo, coil for G20 F30 G30 F20 F40 G29.