GBTAD Ignition Coil Pack and Spark Plug Wire Harness Set for 5.3L V8 — 8 Coils with High‑Conductivity Wires (2007–2011 GM)

If your Chevy, GMC, Buick or Cadillac V8 is showing misfires, rough idle, poor throttle response, or a persistent check-engine light, worn coils or degraded plug wires are common culprits. This GBTAD kit bundles eight ignition coils with a dedicated spark plug wire harness engineered to match OEM fitment for many 2007–2011 GM trucks and SUVs fitted with the 5.3L V8. The kit aims to simplify replacement with compatible part numbers and improved materials for longer life.

Which vehicles and part numbers does this kit match?

GBTAD provides compatibility across a broad range of GM models. The listing covers Chevy Silverado, Avalanche, Tahoe, Suburban, Camaro, Colorado, Corvette, Impala and more, plus GMC Canyon, Sierra, Yukon and Buick and Cadillac models that use the 5.3L V8 ignition layout. Refer to the detailed part numbers to confirm fit before ordering.

• Key coil part numbers: UF413, 12570616, D510C, 12611424 and related OEM references.
• Intended years and engines: commonly used on 2007–2011 5.3L V8 GM vehicles.
• Wide model coverage: Chevy, GMC, Buick, Cadillac families listed in the compatibility notes.

How do these coils and wires improve engine performance?

The GBTAD coils and wires are built with higher-conductivity copper and robust epoxy potting to reduce electrical loss and resist heat-related failure. Better spark energy and consistent firing can reduce misfires, recover lost power, and help clear ignition-related trouble codes when the root cause is worn ignition components.

• Construction: aerospace-grade copper conductors for improved conductivity.
• Durability: high-density epoxy resin encapsulation for thermal and moisture protection.
• Performance claim: designed to reduce misfires and improve throttle response versus degraded OEM units.

What should I check before buying to ensure fitment?

Because several GM coils look similar but fit different applications, verifying your factory coil’s shape and OEM number is essential. Cross-check the listed part numbers and compare photos to the coils on your engine; installing the wrong coil style can prevent the engine from starting.

• Compare OEM numbers printed on existing coils to the kit’s part numbers.
• Visually match coil mold, connector orientation and mounting points with product photos.
• Confirm your vehicle’s model year, engine displacement (5.3L V8) and cylinder count (8) before purchase.

Is installation difficult and what does the kit include?

Installation is typically straightforward for anyone comfortable removing valve covers and disconnecting ignition harnesses; basic hand tools are all that’s needed. The kit supplies eight ignition coils matched with a complete spark plug wire harness, intended to replace the entire ignition set for consistent performance across all cylinders.

• Contents: eight ignition coils plus a full spark plug wires harness for the 8‑cylinder layout.
• Tools: common sockets, screwdrivers and torque wrench recommended for proper reassembly.
• Advice: follow OEM torque specs and replace boots or seals as needed to avoid future leaks.

Who is this for: This GBTAD ignition coil and wire harness kit is aimed at owners and independent technicians working on GM 5.3L V8 vehicles from the late 2000s to early 2010s who need a full ignition-system refresh. It suits DIY mechanics wanting a matched set for consistent cylinder performance and shops that prefer replacing coils and wires together to prevent repeat visits. Always verify part numbers and visual coil design against your vehicle before ordering.