Bosch Ignition Coil for BMW & MINI - 0221504800 Single OE-Quality Coil, High-Voltage Reliability

The Bosch 0221504800 is a single, OE-quality ignition coil engineered to restore consistent spark energy and reliable starting performance for compatible BMW and MINI engines.

Whether you're replacing a failed coil or upgrading aging components, this Bosch ignition coil is built to meet or exceed original equipment specifications. It delivers stable high-voltage output, corrosion-resistant electrical connections, and durable materials designed to withstand heat and vibration common in modern engines. Bosch’s long experience in ignition systems means this coil aims to provide dependable operation and an extended service life when installed correctly.

How does this coil affect engine starting and drivability?

Replacing a worn ignition coil can improve ignition energy delivered to the spark plug, which helps the engine start more readily and run with smoother combustion. Better spark consistency reduces misfires and can result in steadier idling and throttle response. Note that performance depends on overall ignition system condition and engine tuning.

• Provides stable high-voltage output to spark plugs
• Reduces the chance of misfires and uneven idle
• Helps achieve more reliable cold starts
• Works best alongside good spark plugs and wiring

Will this Bosch coil fit my car and how do I check compatibility?

The 0221504800 is designed to replace specific OE coil part numbers and fits a range of BMW and MINI models listed by Bosch. Compatibility can depend on engine variant, trim, and production build dates—especially for certain 2006 models. Always verify fitment using your vehicle’s VIN or the seller’s fitment checker before purchase.

• Replaces common OE numbers like 12137550012 and 597091
• Fits many BMW models including 3, 4, 5, 6, 7 series and M cars
• Also fits select MINI Cooper, Countryman, and Paceman models
• 2006 vehicles require build date verification (4/2006 or later)

How should I install this coil and what should I expect during fitment?

Installation is straightforward for mechanically inclined owners: remove the old coil, ensure the spark plug well and connector are clean, then press the Bosch coil firmly onto the spark plug until fully seated. This Bosch coil is designed to sit securely without the audible click some other coils make; confirm full seating by applying steady pressure. If unsure, have a qualified technician install it to avoid connector or seating issues.

• Clean spark plug well and inspect connector before installation
• Press firmly to ensure coil is fully seated on the spark plug
• No loud click expected—firm pressure confirms correct fit
• Consider professional installation if unfamiliar with ignition components

What are the durability and quality features of this Bosch ignition coil?

Bosch designs these coils with corrosion-resistant electrical contacts, materials that resist extreme temperatures, and vibration-tolerant construction to extend service life in demanding engine environments. The coil’s internal design aims to deliver repeatable voltage to spark plugs across varied operating conditions. Regular inspection and correct installation help the coil meet its longevity potential.

• Corrosion-resistant connectors for reliable electrical contact
• Engineered for temperature and vibration resistance
• Manufactured to meet or exceed OE performance standards
• Long service life when installed and maintained properly

Who is this for: The Bosch 0221504800 is for owners and technicians who need a direct-fit, OE-grade replacement coil for compatible BMW and MINI engines—particularly those experiencing misfires, rough idling, or starting difficulty linked to ignition coil failure. It's also appropriate for drivers who prefer proven OEM-level components for repair or maintenance. Always confirm vehicle compatibility with your VIN or a fitment tool before purchasing.