UF522 Ignition Coil Pack with Iridium Spark Plugs Set of 6 - Reliable

In this review the UF522 ignition coil pack and iridium spark plug set is evaluated as a direct replacement option for a range of BMW models. The bottom line: this 6-pack is for owners who need a full ignition service kit that balances part-number compatibility and durable materials. It stands out because it bundles six coils and six iridium plugs sized to the common 14mm thread, reducing the risk of mismatched parts and saving installation time when replacing coils across an inline-6 or V8 engine.

Key Features

• Complete 6-piece set: Includes six ignition coils and six iridium spark plugs so the whole bank can be replaced in one service, avoiding mixed new and old ignition parts.
• Wide fitment list: Designed to replace many OEM numbers such as UF522 and 12131712219, making it suitable for multiple BMW 3, 5 and 7 series and X models listed.
• Durable materials: Coils use high-strength insulation and copper windings while plugs have a nickel-plated shell and heat-resistant silicone seal for improved longevity.
• Improved ignition efficiency: The matched coil and iridium plug combination promotes rapid, strong sparks for more complete combustion and better fuel use.
• Spark plug dimensions: Spark plugs use a 14mm thread and a 19mm exposed length, which helps ensure correct installation where those dimensions are required.
• Compression and thermal stability: Composite core and construction aim to maintain operation under high temperature and pressure conditions.

Who It's For

This kit is aimed at BMW owners who need to replace an entire ignition bank on compatible models such as 325Ci, 330i, 525i, 530i, 645Ci, 750Li and others listed. It is particularly useful for DIY mechanics and independent shops that prefer to install matched coils and plugs together to avoid performance inconsistencies.

It is not the best choice for someone who only needs a single replacement coil or an uncommon part not listed in the fitment. Buyers should check the specific part numbers and vehicle year at the top of the product page to confirm compatibility before purchasing.

Pros & Cons

Pros

• Good value for a full 6-coil and 6-plug replacement set versus buying piecemeal parts.
• Generally praised for quality and fit on the listed BMW models.
• Materials and construction focus on heat resistance and conductivity for reliable sparks.

Cons

• Some users report occasional individual coils failing, so outcomes can be mixed for long-term reliability.

Specifications

Contents	6 ignition coils + 6 iridium spark plugs
Replaces Part Numbers	UF522, UF515, 12131712219 and others listed
Spark Plug Thread	14mm (0.55in)
Spark Plug Length	19mm (0.75in)
Compatible Engines	2.5L L6, 3.0L L6, 4.4L V8, 4.8L V8 (listed BMW years/models)
Materials	High-strength insulation, copper windings, nickel-plated plug shell

Our Verdict

The UF522 coil and iridium plug 6-pack is a practical, cost-effective option for BMW owners who need to replace a full ignition bank with parts that match several OEM numbers. It offers solid materials and an honest fitment list, making it a sensible purchase for DIYers and independent shops, though a small number of users have reported isolated coil failures over time.

Frequently Asked Questions

Will this kit fit my BMW?
Check the fitment list and OEM part numbers at the top of the product page; it is intended for the BMW models and years shown such as 325Ci, 330i, 525i, 645Ci and 750Li.

What is included in the package?
The package contains six ignition coils and six iridium spark plugs sized with a 14mm thread and 19mm length.

Are these parts durable?
They use heat-resistant insulation, copper windings and nickel-plated plug shells for improved durability; however, some buyers report occasional individual coil failures.