Description
Product Overview
The Bosch 5112486-Kit supports the replacement of ignition components critical for engine performance and efficiency. This kit provides an OE-level, all-in-one set of matched components designed for precision fitment and reliability in your vehicle’s ignition system. Symptoms of ignition issues may include misfires, rough idling, and poor fuel economy. The Bosch 5112486-Kit includes components that are engineered to address these concerns effectively.
Kit Contents
- 8 x Bosch – (0221504464) Ignition Coils
- 8 x Bosch – (4303) Platinum+2 Spark Plugs
Cross Reference Numbers
This Bosch 5112486-Kit is equivalent to or replaces the following part numbers: 0221504464, 4303.
Vehicle Compatibility
- BMW 745Li 4.4 V8 (2002–2005)
- BMW 745i 4.4 V8 (2002–2005)
- BMW 545i 4.4 V8 (2004–2005)
- BMW 645Ci 4.4 V8 (2004–2005)
- BMW X5 4.4 V8 (2004–2006)
This kit also fits other applications. Please use the vehicle selector tool to verify compatibility before purchase.
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Frequently Asked QuestionsWhat symptoms indicate that I may need to replace my ignition coils?
Common symptoms include engine misfires, rough idling, and decreased fuel efficiency, which can signal that the ignition coils are failing.
How do I know if my spark plugs need replacing?
If you experience difficulty starting your vehicle or notice a significant drop in engine performance, it may be time to replace the spark plugs.
Are there specific diagnostic trouble codes (DTC) associated with ignition coil failure?
Yes, DTC codes such as P0300 (random/multiple cylinder misfire) can indicate issues with ignition coils or spark plugs.
Can I use this kit for multiple vehicle applications?
This kit is designed for specific BMW models, but it may fit other applications. Always verify compatibility using the vehicle selector tool.
What is the expected lifespan of ignition coils and spark plugs?
Typically, ignition coils can last anywhere from 60,000 to 100,000 miles, while spark plugs may need to be replaced more frequently, depending on driving conditions.
Order Bosch 5112486-Kit today to support a complete, well-matched repair for your vehicle.
Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.




