Walker 921-2275 Ignition Coil

Walker ThunderSpark Ignition Coil 921-2275

Walker ThunderSpark 921-2275 is an ignition coil for a wide range of BMW and Mini applications. It is listed for many turbocharged and naturally aspirated models across multiple model years, including BMW 3 Series, 5 Series, X3, X5, X6, M2, M3, M4, M760i xDrive, and Mini Cooper variants.

The ThunderSpark line covers OE-style ignition coil replacement needs for vehicles using standard single-coil and Delphi ignition configurations. If you are servicing a BMW or Mini with misfire symptoms, this part number is a direct fitment match for the applications shown below.

• Brand: Walker
• Brand line: ThunderSpark
• Part number: 921-2275
• Ignition coil replacement for BMW and Mini applications
• Fits vehicles with Single Coil and ThunderSpark/Delphi-specific notes where listed
• Coverage includes many 2003-2022 BMW and Mini models

Detailed Fitment Coverage

Compatible With select BMW and Mini vehicles from 2003-2022, this ignition coil is listed for applications such as Fits 2015-2020 BMW M4, N/A; Fits 2011-2018 BMW X5, N/A; Fits 2011-2016 Mini Cooper, N/A; and Fits 2007-2013 BMW 328i, N/A, For DELPHI Unit. The fitment data also includes BMW 320i, 335i, 528i, 535i, 640i, 740i, X1, X3, X4, X6, Z4, and Mini Cooper Countryman and Paceman applications. Walker 921-2275 is a fitment-specific ignition coil for vehicles that call for the listed ThunderSpark or Single Coil configuration.

This part cross-references no additional part numbers in the provided data.

Common Symptoms This Part Can Address

• Engine misfire under load or at idle
• Rough running after ignition coil failure
• Check engine light related to ignition performance
• Hard starting caused by weak spark output
• Loss of power from inconsistent coil operation

Installation Notes and Tips

Verify the engine designation, ignition system type, and fitment notes before ordering. Several applications are listed with Delphi-specific or round-coil notes, so matching the original coil style is important. Confirm the vehicle year, make, and model against the fitment table for an exact match before installation.

Quality Assurance

Walker ThunderSpark is the product line identified for this ignition coil application. Use the listed fitment notes to confirm the correct replacement for your BMW or Mini before service.