UF669 Ignition Coil & 1675 Double Iridium Spark Plug Compatible

In this review the UF669 ignition coil paired with four NGK-style 1675 double iridium spark plugs is evaluated as a direct replacement kit for 1.4L turbo engines found in many GM compact models. The bottom line: this kit is for DIYers and independent mechanics who need an affordable, OEM-form replacement that restores engine smoothness and cold-start reliability. The reviewer found it restores lost power and can improve fuel economy when worn coils or plugs caused misfires, while offering long life from the double iridium plugs.

Key Features

• Vehicle compatibility: Designed to match the ignition geometry for 1.4L turbo GM engines from 2011-2020, which simplifies selection for Cruze, Sonic, Trax, Volt, Encore and Cadillac ELR owners.
• Double iridium spark plug: The included PFR7S8EG-style double iridium plug provides stable, consistent sparking and a longer service interval compared with standard plugs.
• OE-style ignition coil UF669: The coil is built to the original equipment form factor so it installs without modifications and keeps proper connector fit and clearance.
• Improved start and idle: Replacing worn coils and plugs helps remove misfire, rough idle and hesitation for smoother cold starts and steadier low-speed running.
• Materials and suppression: The coil uses stainless-steel spring components and an internal ferrite suppressor to reduce radiofrequency interference while transferring high voltage reliably.
• Support and warranty: The kit is backed by 24-hour customer service and a one year product service period for installation or quality concerns.

Who It's For

This kit is best for owners of 1.4L turbo GM compact cars who prefer to replace coils and plugs themselves or who use an independent shop. It fits a defined list of models and model years, so buyers who want a near-OE replacement part for Cruze, Sonic, Trax, Volt, Encore and Cadillac ELR will find it convenient and cost effective.

Those who should look elsewhere include drivers with non-1.4L engines, owners who require factory-branded parts for warranty reasons, and buyers seeking a full multi-coil set; this kit contains one ignition coil pack and four plugs, so confirm your vehicle's coil layout before ordering.

Pros & Cons

Pros

• Good fit and straightforward installation for compatible GM 1.4L engines, reducing shop time for DIY installers.
• Double iridium plugs offer longer life and consistent spark delivery, which can translate to improved fuel efficiency.
• Coil construction includes suppression and heat-resistant connector materials for reliable performance under thermal cycling.
• Positive customer reports of improved MPG and restored engine smoothness after replacement.

Cons

• Durability has mixed customer reports, so long-term longevity may vary depending on driving conditions and vehicle history.
• Package includes one ignition coil and four plugs only, which may not match all vehicles that require multiple coils at once.

Specifications

Brand	X4XZ
Ignition coil model	UF669 (OE-style)
Spark plug type	Double iridium, NGK-style 1675 (PFR7S8EG)
Included items	Ignition Coil Pack x1, Double Iridium Spark Plug x4
Compatible engines	1.4L Turbo GM engines (Cruze, Sonic, Trax, Volt, Encore, Cadillac ELR)
Warranty	1 year product service, 24-hour customer support

Our Verdict

This UF669 coil plus 1675 double iridium plug kit is a sensible, cost-effective replacement for owners of compatible 1.4L GM turbo engines who want near-OE fit, improved cold-start behavior and longer plug life. It restores drivability and can improve fuel economy, making it good value for DIY repairs, while buyers seeking guaranteed long-term durability should monitor performance over time.

Frequently Asked Questions

Does this kit fit my Cruze or Sonic?
Check the second main picture and the vehicle list: it is intended for 1.4L turbo Cruze (2011-2015), Sonic (2012-2020), Trax, Volt, Encore and Cadillac ELR model years shown.

How many coils and plugs are included?
The package includes one UF669 ignition coil pack and four double iridium spark plugs; confirm your engine's coil count before ordering.

Will these parts improve fuel economy?
Replacing worn coils and plugs often restores lost efficiency; customers have reported noticeable MPG improvement once misfires and rough idle were resolved.