Set of 8 Round Ignition Coil UF414 + 748UU Spark Plug Wire Set

In this review the Set of 8 Round Ignition Coil UF414 with 8 spark plug wires is evaluated for drivers who need a full ignition coil and wire replacement in compatible GM V8 applications. The bottom line: this kit is best for owners who want a complete, matching coil-and-wire swap that mirrors OE fitment and saves time by including wires and clamps. Our review found the coils themselves offer good fit and consistent performance, while buyers should verify round versus square coil body style before ordering to avoid a mismatch.

Key Features

• Complete kit: Includes 8 round UF414/D514A ignition coils plus 8 spark plug wires and a wire clamp set so you can replace coils and wires in one job.
• OE-style design: Coils are engineered to match or improve on original equipment design for straightforward installation and reliable ignition delivery.
• Wide compatibility: Marketed to fit many Chevrolet, GMC, Pontiac and Cadillac V8 models including Silverado, Tahoe, Suburban, Express and Escalade when the round coil is required.
• Interchange numbers provided: Replacement references such as C1512, D514A, 12573190 and UF-414 are listed to help confirm fit with your vehicle.
• Manufacturer support: SPARKWHIZ commits to customer email support with responses promised within 12 hours for fitment or installation questions.

Who It's For

This kit is aimed at DIY mechanics and independent shops working on compatible GM V8 engines who prefer a single-purchase solution that includes coils and wires. It is especially useful when multiple coils have failed or when preventive maintenance calls for replacing the entire bank to avoid future misfires.

Those who should look elsewhere are owners of vehicles that require the square body UF413/D510C coil style or cars outside the listed model compatibility; confirming the coil body shape and part cross-references is essential before buying.

Pros & Cons

Pros

• Good coil quality and fit make installation simple and clean in most compatible vehicles.
• Value for money since the package includes both coils and spark plug wires, eliminating the need to buy separate parts.
• Clear interchange numbers and manufacturer support help confirm correct fitment for many GM applications.

Cons

• Some customers report mixed ignition performance and occasional misfires on a few cylinders after installation.
• Spark plug wires have been reported to tear during installation, indicating wire quality may be a weak point.

Specifications

Our Verdict

The Set of 8 Round Ignition Coil UF414 with 8 spark plug wires is a sensible, cost-effective option for owners of compatible GM trucks and SUVs who need a complete ignition bank replacement. The coils fit well and mirror OE design, offering good value, but buyers should confirm the round coil body style and be aware that wire durability has attracted a few complaints.

Frequently Asked Questions

How do I confirm these coils fit my vehicle?
Check the year/make/model drop down and listed interchange numbers, or compare your original coil body shape to ensure it is the round UF414/D514A style.

Are the spark plug wires included?
Yes, the package contains 8 spark plug wires plus a wire clamp set so no separate wire purchase is required.

What if I have fitment or installation questions?
Contact the seller by email; SPARKWHIZ states they reply within 12 hours to assist with fitment and installation concerns.