Ignition Coil Pack and Spark Plugs Set - Reliable Misfire Fix

In this review the focus is on a combined ignition coil and spark plug set designed for several Ford, Lincoln, Mazda and Mercury V6 engines. The bottom line: this kit is for owners who need a direct-fit replacement to address misfires, rough idle or reduced fuel economy and want a clear upgrade over worn originals. The reviewer found the set installs easily, restores smooth operation, and delivers a stronger, more consistent spark thanks to the high-voltage coils and double iridium plugs, making it a practical repair for mid-2000s to early-2010s vehicles.

Key Features

• OE Fitment: Built to meet OE specifications for direct compatibility with listed Ford, Lincoln, Mazda and Mercury engines, reducing fitment guesswork.
• Complete Kit: Includes six UF553 ignition coil packs and six SP411 double iridium spark plugs so all cylinders receive matched components for uniform performance.
• Fast Ignition: Coils claim rapid firing within 0.1-0.2 seconds, which helps restore crisp throttle response and reduce hesitation.
• Durable Spark Plugs: Double iridium electrodes increase longevity and support a stable idle, improved fuel economy and easier cold starts.
• High Voltage Output: Coils deliver high voltage and RF interference protection to maintain smooth engine operation and reliable combustion.

Who It's For

This set is aimed at DIY owners and independent shops working on 3.5L and 3.7L V6 engines from the specified Ford, Lincoln, Mazda and Mercury years who want a matched coil-and-plug replacement to solve misfires and poor mileage. It suits drivers who prefer replacing all cylinders at once for consistent performance rather than swapping a single cylinder part.

Owners who need exact OEM-branded parts or who prefer dealer-supplied components may want to compare warranty and support options, and anyone with an engine variant not listed in the fitment should verify compatibility before purchase.

Pros & Cons

Pros

• Direct-fit design that follows OE specifications for easy installation and correct alignment.
• Includes six coils and six double iridium plugs, making it a full-service replacement for V6 engines.
• Notable improvement in engine smoothness and reduced misfires reported by users after installation.
• Good value compared with buying coils and plugs separately.

Cons

• Quality impressions are mixed in user reports, so results may vary by batch or prior engine condition.
• Limited to the listed vehicle years and engine types; fitment must be confirmed before ordering.

Specifications

Quantity	6 coils + 6 spark plugs
Coil Part Number	UF553
Spark Plug Part Number	SP411
Voltage	12V
Spark Plug Material	Double Iridium
Terminal Type	Blade
Typical Fitment	Ford, Lincoln, Mazda, Mercury V6 3.5L / 3.7L (listed years)

Our Verdict

This ignition coil and spark plug set is a practical, cost-effective way to restore engine smoothness and eliminate misfires on the specified Ford, Lincoln, Mazda and Mercury V6 applications. It offers full-kit convenience and improved ignition stability provided fitment is confirmed; buyers who want a matched replacement at reasonable value will find it worthwhile.

Frequently Asked Questions

Will this kit fix a persistent misfire?
If the misfire is caused by worn coils or plugs on the listed engines, replacing all six with this matched set often resolves the issue.

Does it include everything needed for a full replacement?
Yes, the package contains six coil packs and six double iridium spark plugs to service all cylinders of the compatible V6 engines.

How do I confirm my vehicle fits?
Enter your vehicle year, make and model and cross-check the listed fitment years and engine sizes before purchase.