autoexact Ignition Coil Pack Kit with UF413 Square Coils, 8-Pack with Iridium Plugs & Wires for GM 4.8L–6.2L Trucks — Pre-gapped,

Complete 8-pack ignition kit: eight square UF413 coil packs, eight pre-gapped iridium spark plugs (41962) and eight spark plug wires engineered to restore reliable spark delivery for compatible Chevy, GMC and Cadillac V8/V6 engines.

This full ignition replacement bundle combines coil packs, fine-wire iridium plugs and matched plug wires so you can replace all high-voltage components at once. The kit is built as a direct-fit option for many 4.8L, 5.3L, 6.0L and 6.2L GM engines — it’s the square UF413 coil variant (not the round UF414). Each coil is epoxy-sealed, and the plugs arrive pre-gapped to factory-equivalent specs for straightforward installation with basic tools.

Will these parts fit my truck or SUV?

Compatibility depends on engine family and coil shape. This set is designed for specific GM vehicles and engines listed in the fitment notes; it replaces heat-range 5 or 6 plugs that share identical mechanical specs. Always cross-check your vehicle VIN, engine displacement and coil shape prior to purchase.

• Fits many Chevy/GMC/Cadillac 4.8L, 5.3L, 6.0L and 6.2L models (see detailed fitment list).
• Contains square UF413 coil packs — verify your vehicle uses square coils, not round UF414.
• Plugs: 14mm thread, tapered seat, 1.3mm preset gap — interchangeable between listed heat ranges.

How can this kit affect engine running behavior?

Worn coils or plugs often lead to misfires, rough idling, hesitation or a check engine light. Replacing all ignition components at once reduces the chance of repeating repairs caused by mixed-age parts and can re-establish consistent spark timing when ignition hardware is the root cause.

• Epoxy-potted coils resist moisture and internal arcing for steady spark output.
• Fine-wire iridium plugs help maintain stable ignition and combustion consistency.
• Durable rubber boots and spring contacts support secure electrical connection.

What does installation involve and what tools are needed?

Installation is intended to be a direct replacement using common hand tools. The kit includes pre-lubricated components and a wire clip to simplify routing. Follow torque specs and basic safety steps when changing plugs and coils.

• Recommended spark plug torque: 11.06 ft·lb (15 N·m) — use a torque wrench for accuracy.
• Factory-applied green dielectric grease on boots for easier seating and corrosion resistance.
• Basic tools: ratchet, spark plug socket, torque wrench, dielectric grease, and hand tools.

What quality checks and warranty support come with the kit?

Each ignition coil is electrically tested to confirm high-voltage output and insulation integrity prior to shipping. The seller backs the kit with a two-year warranty and lifetime technical support to assist with compatibility questions or installation concerns.

• High-voltage open-circuit test: secondary output around 35±2KV to verify insulation strength.
• Components inspected for fit and function before dispatch.
• 2-year warranty plus lifetime technical help — provide VIN if unsure about fitment.

Who is this for: This kit is aimed at DIY mechanics, independent shops and fleet owners who need a full ignition overhaul for compatible GM trucks and SUVs. It’s especially useful when multiple ignition-related symptoms appear or when you want to avoid repeated visits by replacing coils, plugs and wires together. If you’re uncertain about compatibility, supply your VIN or original coil part shape (square UF413 vs round UF414) to confirm fit before ordering.