Description
Product Overview
The Bosch 5113851-Kit ignition coil kit supports ignition system maintenance and repairs, providing an OE-level, all-in-one set of matched components. This kit is designed for precision fitment and reliability, addressing symptoms such as misfires, rough idling, and poor fuel economy. The components included in this kit aim to help resolve issues associated with ignition system failures. The Bosch 5113851-Kit is a reliable solution for various European vehicles.
Kit Contents
- 2 x Bosch – (0221503407) Ignition Coils
- 8 x NGK – (BKR6EGP) G-Power Spark Plugs
Cross Reference Numbers
This Bosch 5113851-Kit is equivalent to or replaces the following part numbers: 0221503407, BKR6EGP.
Vehicle Compatibility
- Audi A8 Quattro 4.2 V8 (1997–2006)
- Audi A6 Quattro 4.2 V8 (2000–2006)
- Audi S8 4.2 V8 (2001–2003)
- Audi S6 4.2 V8 (2002–2003)
- Audi Allroad Quattro 4.2 V8 (2004–2005)
- Audi S4 4.2 V8 (2004–2009)
- BMW 740i 4.0 V8 (1993–1995)
- BMW 740iL 4.0 V8 (1993–1995)
- BMW 530i 3.0 V8 (1994–1995)
- BMW 540i 4.0 V8 (1994–1995)
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 faulty ignition coil?
Common symptoms of a faulty ignition coil include engine misfires, rough idling, and difficulty starting the vehicle. You may also notice reduced fuel efficiency.
How can I tell if my spark plugs need replacing?
If your vehicle is experiencing rough engine performance, poor acceleration, or you see DTC codes related to misfires, it may be time to replace your spark plugs.
Can a bad ignition coil affect my fuel economy?
Yes, a malfunctioning ignition coil can lead to incomplete combustion, which often results in decreased fuel efficiency and increased emissions.
What should I do if I experience misfires after installation?
If misfires persist after installation, it is advisable to check the connections and ensure that the coils and spark plugs are properly seated and compatible with your vehicle.
Are the spark plugs pre-gapped?
The NGK G-Power spark plugs included in this kit come with a pre-gap size of .040 inches, but it is recommended to verify the gap before installation to match your vehicle’s specifications.
Order Bosch 5113851-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.




