ENA Ignition Coil and Spark Plug Wire Kit for GM V8 — 8-Pack UF414 Round Coils, Iridium Plugs & Silicone Wires

ENA's complete 8-pack ignition coil kit pairs round UF414-style coils with iridium-tipped spark plugs and high-performance wires to restore reliable spark delivery on many GM V8 engines.

This all-in-one kit replaces worn ignition components on select Chevrolet and GMC V8 trucks and SUVs, combining eight bolt-on round coils, eight iridium platinum spark plugs, and eight silicone-insulated spark plug wires. Each part is designed for plug-and-play replacement, with specifications matched to factory mounting and electrical requirements. The set helps streamline maintenance by providing every ignition channel at once, plus a 12-month warranty for added peace of mind.

Will these coils, plugs, and wires fit my truck or SUV?

Compatibility centers on GM V8 engines from model years roughly 2007–2016, but exact fit depends on engine displacement and coil style. This kit is for vehicles that use the round UF414-style ignition coil; the square UF413 coil is a different part and will not fit. Always verify your original coil’s shape and cross-check your vehicle year, engine size, and OEM reference numbers before purchase.

• Fits many Silverado, Sierra, Tahoe, Suburban, Yukon, Avalanche, Camaro, and select GM V8 models.
• Common engine sizes covered: 4.8L, 5.3L, 6.0L, 6.2L depending on model year.
• Reference numbers matched: UF414, 12573190, 5C1555, IC534 among others.

How do these parts improve ignition performance and reliability?

Replacing aged coils, fouled plugs, and brittle wires restores consistent spark timing and strength across all cylinders. The kit’s iridium platinum plugs provide a durable electrode surface and stable gap, while the silicone-insulated wires and fiberglass-reinforced cores resist heat and electrical leakage. Together they reduce misfires, support smoother idle, and help maintain efficient combustion under normal operating conditions.

• Iridium center tips for long wear and consistent spark energy.
• Silicone insulation and reinforced cores on wires for heat resistance.
• Coils are 12V bolt-on design to match factory mounting and connectors.

What are the key specifications I should check before ordering?

Confirm coil style (round UF414), plug thread size, and wire dimensions to ensure interchangeability. The plugs in this kit use a 14 mm thread, a 16 mm hex size, and a 1.0 mm gap; the wires are approximately 8 mm in diameter with silicone insulation. The ignition coil is a four-terminal bolt-on module intended for engine-bay mounting and 12V operation.

• Spark plug: 14 mm thread, 16 mm hex, iridium platinum tip, 1.0 mm gap.
• Spark plug wire: 8 mm diameter, fiberglass-reinforced core, silicone jacket.
• Coil pack: UF414 round style, 4 terminals, bolt-on mount, 12V rating.

How difficult is installation and what should I prepare?

Installation is straightforward for anyone comfortable with basic engine maintenance and hand tools, since components are designed for direct replacement. Expect to disconnect the battery, remove old coils and wires, swap plugs with a torque wrench, and fit new coils and wire ends to factory connectors. If you’re unsure, a professional mechanic can complete the job quickly; always follow torque specs and safety precautions.

• Recommended tools: ratchet, torque wrench, spark plug socket, dielectric grease.
• Disconnect battery and replace components one cylinder at a time to avoid mix-ups.
• Use manufacturer torque specs for plugs and ensure proper connector seating on coils.

Who this is for: This ENA 8-pack ignition kit is aimed at owners and technicians working on compatible GM V8 trucks and SUVs who want a complete replacement set—coils, iridium plugs, and wires—sold together for convenience. It's ideal if multiple cylinders are misfiring, if routine maintenance reveals aged plugs or cracking wires, or if you prefer replacing all ignition channels at once to restore consistent engine performance.