Ignition Coil & Spark Plug for Chevy Avalanche 1500 (2007-2012) V8 (Round Style)

High-Energy Round Style Ignition Coils & Spark Plugs for 2007-2012 Chevrolet Avalanche

Directly replaces deteriorating OEM ignition components to restore proper spark delivery and eliminate misfires across the rev range.

The Stock Avalanche Ignition Weakness

The factory ignition coils on the GMT900 chassis, specifically the Gen IV Vortec V8s, are notorious for internal epoxy degradation due to prolonged heat soak from the engine block. Over time, the thermal cycling breaks down the primary coil resistance, leading to weak spark output, rough idling, hesitation under load, and eventual P0300-series misfire codes. Furthermore, aging OEM spark plug wires often experience dielectric breakdown, causing voltage leaks that compromise combustion efficiency, reduce fuel economy, and severely limit the truck's towing capability.

The Engineering Solution

This complete ignition overhaul kit replaces the restrictive and failure-prone OEM setup with high-performance round-style coils designed to output 32,000 maximum voltage—a 20% increase in spark energy over stock. Constructed with a highly durable internal epoxy resin and heavy-duty copper wire windings, these coils maintain a stable 0.660-ohm primary and 6.1K-ohm secondary resistance even under extreme thermal stress. The kit includes matched spark plugs and 748UU silicone-jacketed wires to ensure zero voltage leakage and maximum dielectric strength. This direct plug-and-play solution is designed to ensure a stronger, more consistent spark, restoring the heavy-duty reliability required for hauling and daily driving.

Technical Specifications

Compatibility

• 2007-2012 Chevrolet Avalanche 5.3L V8
• 2007-2009 Chevrolet Avalanche 6.0L V8
• Note: Made for factory round-style ignition coils (UF414 / D514A).

The Chevrolet Durability Standard

Built to handle the demanding workloads of the GMT900 platform, this high-energy ignition setup ensures your Avalanche maintains consistent power delivery, whether you're towing heavy payloads or navigating off-road terrain.

Common Questions

Will this ignition kit fit my 2007-2012 Chevy Avalanche V8?
Yes, this kit is a direct plug-and-play fit for 2007-2012 Chevrolet Avalanche 1500 models equipped with the Gen IV Vortec V8 (5.3L and 6.0L) and factory round-style ignition coils (UF414 / D514A).

Does this kit work on trucks with square-body ignition coils?
This kit is built specifically for GM V8 engines that use round-style coils (UF414 / D514A). Trucks factory-equipped with square-body coils use part numbers UF413 / D510C instead.

What is included in the box?
The kit includes high-output round-style ignition coils (UF414 / D514A), matched spark plugs (41962), and 748UU silicone-jacketed spark plug wires.

How do these ignition coils compare to the stock OEM coils?
These coils are rated at 32,000 maximum voltage for a 20% increase in spark energy over stock, and they feature durable internal epoxy resin and heavy-duty copper windings with a 0.660-ohm primary and 6.1K-ohm secondary resistance.

Is any wiring modification required for installation?
Installation is completely plug-and-play. Each coil, plug, and wire connects directly to the factory GMT900 harness and mounting points without splicing or modifications.