Description
Product Overview
The Bosch 5114409-Kit is designed to support ignition system repairs and maintenance. This kit provides an OE-level, all-in-one set of matched components to ensure precision fitment and reliability. Common symptoms of ignition system issues include misfires, rough idling, and difficulty starting the engine. The components in this kit help address these symptoms without making any guarantees about performance. The Bosch 5114409-Kit is suitable for those looking to maintain or improve their ignition system’s performance.
Kit Contents
- 8 x Bosch – (0221504029) Ignition Coils
- 8 x NGK – (BKR6EIX) Iridium IX Spark Plugs
Cross Reference Numbers
This Bosch 5114409-Kit is equivalent to or replaces the following part numbers: 0221504004, BKR6EIX, 6418.
Vehicle Compatibility
- BMW 840Ci 4.4 V8 (1996–1997)
- BMW 740iL 4.4 V8 (1996–2001)
- BMW 740i 4.4 V8 (1997–2001)
- BMW 540i 4.4 V8 (1997–2003)
- BMW M5 5.0 V8 (2000–2003)
- BMW X5 4.4 V8 (2000–2003)
- BMW Z8 5.0 V8 (2000–2003)
- BMW X5 4.6 V8 (2002–2003)
- BMW Z8 4.8 V8 (2003)
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 a failing ignition coil?
Common symptoms of a failing ignition coil include engine misfires, rough idling, and decreased fuel efficiency.
How do I know if my spark plugs need replacing?
If you notice hard starts, poor acceleration, or increased emissions, it may be time to replace your spark plugs.
Can this kit help with DTC codes related to ignition issues?
This kit can support repairs related to DTC codes such as P0300 (random/multiple cylinder misfire) and P0350 (ignition coil A primary/secondary circuit malfunction).
What is the lifespan of spark plugs in this kit?
Iridium spark plugs typically have a longer lifespan than conventional plugs, often lasting up to 100,000 miles under normal driving conditions.
Is it necessary to replace ignition coils when changing spark plugs?
While not always necessary, it’s advisable to inspect ignition coils for wear when changing spark plugs, as they work closely together in the ignition system.
Order Bosch 5114409-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.
