4PCS UF529 Ignition Coils + 4 Iridium Spark Plugs Coil Pack Set

In this review of the 4PCS UF529 Ignition Coils + 4PCS Iridium Spark Plugs pack, the bottom line is simple: it is a practical replacement kit for owners of compatible Audi and Volkswagen V6 and V8 models who need a cost-effective way to restore engine smoothness. The reviewer found this set delivers dependable ignition performance and straightforward installation for those comfortable checking fitment details, and it stands out most for restoring throttle response and idle stability after worn coils and plugs were removed.

Key Features

• OE Replacement Numbers: The kit replaces coils with OE references UF529, 06E905115E/F/A/C so buyers can match service part numbers for confident ordering.
• Thread Size and Length: The spark plugs use an M14 thread with a 19mm thread length, which helps ensure correct seating and consistent spark gap performance.
• Compatibility: Designed for a broad set of 3.0L and 4.2L engines, the pack fits many A4, A5, A6, A7, A8, Q5, Q7 and R8 Quattro models, making it a versatile spare-part purchase.
• Performance Focus: Premium materials and construction aim to provide high ignition efficiency and reliable starting under varied driving conditions.
• Long Service Life: The coils are built to withstand standard engine heat and vibration, which contributes to sustained running quality and fewer replacement cycles.

Who It's For

This kit is best for owners and independent mechanics who have Audi or VW models with 3.0L or 4.2L engines and who need a full set of coils and plugs to address misfires, poor idle, or reduced throttle response. It suits buyers who can verify OE numbers and thread dimensions before purchase to ensure fit.

Those who should look elsewhere include drivers with very recent model variants or non-Quattro trims that may have differing coil designs, and owners who prefer factory-branded parts from a dealer for warranty-backed service; careful fitment checks are recommended.

Pros & Cons

Pros

• Quality construction that customers say improves engine smoothness and is good value for money.
• Direct OE number replacements allow precise matching to original parts for many Audi and VW engines.
• Includes iridium spark plugs and coils together, simplifying routine replacement and reducing parts sourcing time.

Cons

• Some buyers reported fitment mismatches on specific models, so it requires confirming model compatibility before purchase.

Specifications

Package Contents	4 ignition coils and 4 iridium spark plugs
OE Numbers	UF529, 06E905115E, 06E905115F, 06E905115A, 06E905115C
Compatible Engines	3.0L and 4.2L
Compatible Models	A4, A4 Quattro, A5, A5 Quattro, A6, A6 Quattro, A7 Quattro, A8 Quattro, Q5, Q7, R8
Thread Diameter	M14 / 0.55in
Thread Length	19mm / 0.75in

Our Verdict

For owners of compatible Audi and VW 3.0L and 4.2L cars who need a reliable, cost-conscious replacement, this coil and iridium plug set is a sensible choice. It offers improved running quality and good value when fitment is confirmed, though shoppers should double-check OE numbers and thread dimensions to avoid compatibility issues.

Frequently Asked Questions

Will these coils fit my Audi A6 2010 3.0L?
They are designed for many 3.0L A6 Quattro models, but verify the OE number and engine type to be certain.

Do the spark plugs have the correct thread size?
Yes, the plugs are M14 thread diameter with a 19mm thread length as specified.

What if a part does not fit?
Check the model applicability and OE numbers; contact the seller pre- or post-sale for support if you encounter a fitment problem.