Ozikutech Coil Packs and 10.2mm Spark Plug Wires for GM LS V8 (8-Coil Kit) — Direct Fit, Improved Ignition

If your Chevrolet, GMC or related GM vehicle is exhibiting rough idling, poor throttle response, or reduced fuel economy, worn ignition coils and aged plug wires are common culprits. This kit includes eight square-style ignition coils and eight 10.2mm spark plug wires designed to directly replace original equipment on a wide range of LS V8 applications. The components are made to fit factory mounting points and wiring paths so installation can be straightforward for a competent DIYer or a professional technician.

Which vehicles will these coils and wires fit?

These Ozikutech parts are built for many GM platforms that use LS-series V8 engines. Fitment covers model years across Chevrolet, GMC, Cadillac, Buick, Pontiac, Hummer and Saab vehicles that came with 4.8L, 5.3L, 6.0L or 6.2L V8 motors. Always cross-reference part numbers and engine codes before purchasing.

• Chevrolet: Silverado 1500/2500/3500, Tahoe, Suburban, Camaro, Corvette, Avalanche, Impala, Express, Caprice, SS, Colorado, SSR
• GMC: Sierra 1500/2500/3500, Yukon XL, Canyon, Savana, Sierra Classic
• Other makes: Cadillac Escalade/CTS, Hummer H2/H3, Buick Rainier/LaCrosse, Pontiac Grand Prix/GTO, Saab 9-7x/Ascender

How do these parts compare to the original equipment (OEM)?

The kit is specified as a direct replacement for multiple OEM numbers and was made to match the mounting points and electrical connections of factory coils and wires. Materials and electrical characteristics are chosen to meet the needs of GM LS ignition systems so the swap keeps firing timing and routing intact.

• Replacement for UF-413, 12611424, 12570616 and related OEM references
• 8 coils plus 8 spark plug wires included for a complete bank refresh
• 10.2mm wire diameter for improved insulation and EMI suppression

What performance or drivability changes can I expect after installation?

Replacing worn coils and aged wires often reduces misfires, smooths acceleration and can help restore previously lost fuel efficiency. While results depend on overall engine health, fresh ignition components typically make throttle response crisper and idle steadier.

• Reduced misfires and fewer hesitation events under load
• Smoother idle and more consistent spark delivery across cylinders
• Potential improvement in fuel economy when ignition faults were present

How difficult is installation, and what should I prepare?

Installation is moderate difficulty: coils mount to the valve cover and wires route to each spark plug following factory clips. Remove battery negative, label connections, and work one cylinder at a time to avoid mix-ups. Torque coil fasteners to spec and inspect boot seating for a secure electrical connection.

• Tools: basic socket set, torque wrench, dielectric grease for boots (optional)
• Time: about 1–2 hours for a proficient DIYer; longer if access is limited
• Tip: replace in an organized order and check for stored trouble codes after swap

Who is this for: Ozikutech’s ignition coil and 10.2mm spark plug wire kit is aimed at owners of GM LS-series V8 vehicles who need a full-bank ignition refresh—either to replace failing OEM parts or as part of regular maintenance. It suits DIY mechanics, independent shops and fleet managers who want a single kit that covers all eight cylinders and matches common OEM references for a reliable, drop-in replacement.