Description
Product Overview
The Hitachi 5225746-Kit supports ignition system maintenance by providing an OE-level set of matched components for reliable performance. This kit includes precision-engineered ignition coils and spark plugs, designed to address common issues such as misfires, rough idling, and decreased fuel efficiency. The components are built to fit specific vehicle applications, ensuring compatibility and reliability. With the Hitachi 5225746-Kit, you can expect a thorough approach to ignition system repairs, targeting symptoms like DTC codes related to ignition faults.
Kit Contents
- 8 x Hitachi – (IGC3875) Ignition Coils
- 8 x NGK – (6441) Spark Plugs – Iridium IX
Cross Reference Numbers
This Hitachi 5225746-Kit is equivalent to or replaces the following part numbers: 6441, IGC3875, 12317594937, 12137575010, MZ602069, 12137551049, 12137594596, 999-06910-X9-020, 99906910X9020, 12130390064, 12137562744, BY481-ZFR6F, BY481ZFR6F, 12137594938, 12138616153, 12137571643, 12130148594, 12 13 7 594 937, 12137594937, 1UNH-18-110, 1UNH18110, 12131712219, 5225746Kit, FR7KII33X, QSP3, 9604, 9803, 5357, 9603, 4701, FR7LII33X, 6441, IK16L, FR8KII332X, IK16TT, 5358, 9803S, IK20L, 9664, XP5224.
Vehicle Compatibility
- BMW 750Li 4.8 V8 (2006–2008)
- BMW 750i 4.8 V8 (2006–2008)
- BMW 550i 4.8 V8 (2006–2010)
- BMW 650i 4.8 V8 (2006–2010)
- BMW X5 4.8 V8 (2007–2010)
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 failing ignition coil include engine misfires, poor fuel economy, and difficulty starting the vehicle. You may also experience rough idling or a loss of power during acceleration.
How do I know if my spark plugs need replacing?
Symptoms of worn spark plugs can include engine misfires, reduced fuel efficiency, and difficulty starting the engine. You may also notice a decrease in overall engine performance.
Can DTC codes help diagnose ignition issues?
Yes, diagnostic trouble codes (DTC) can provide insights into ignition system problems. Codes such as P0300 to P0308 indicate misfires in specific cylinders, which can often be traced back to faulty ignition coils or spark plugs.
Is it necessary to replace all ignition coils at once?
While it is not mandatory, replacing all ignition coils simultaneously can help prevent future misfires and ensure balanced performance across all cylinders, especially when symptoms are present in multiple areas.
What is the expected lifespan of ignition coils and spark plugs?
Ignition coils generally last between 60,000 and 100,000 miles, while iridium spark plugs can last up to 100,000 miles. Regular maintenance and timely replacement can help maintain optimal engine performance.
Order Hitachi 5225746-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.




