Ignition Coil & Spark Plug for Chevy Suburban 1500 2500 Tahoe (2007-2016) V8 (Round Style)

High-Output Ignition Coil & Spark Plug Set for 2007-2016 Chevrolet Suburban, Tahoe

What it Does: Replaces aging factory coils, plugs, and wires to restore combustion efficiency, correct misfires, and deliver a 20% stronger spark across the RPM range.

The Stock GM V8 Ignition Weakness

Over time, the factory Delphi or Melco ignition coils on GM Gen IV V8 engines degrade significantly due to extreme engine bay heat cycling and continuous high-voltage discharge. The primary epoxy insulation inside the coil housing micro-cracks, leading to voltage leaks to the engine block, weak spark delivery, and inevitable P0300-series misfire codes. Furthermore, standard OEM spark plug wires experience increased internal resistance as the carbon core breaks down, causing delayed spark timing, rough idling, poor fuel economy, and diminished towing performance.

The Engineering Solution

This direct-replacement ignition package upgrades the factory system with high-energy round-style D514A/UF414 coils, matched spark plugs, and low-resistance 748UU 8mm wires. Engineered with an upgraded internal copper winding and a 61:1 turns ratio, these coils deliver up to 32,000 peak volts—a 20% increase in discharge energy over standard OEM coils. The external housing is sealed with high-dielectric epoxy to combat heat soak and prevent the thermal breakdown typical in tight truck engine bays. Paired with high-conductivity spark plug wires, this kit ensures a complete fuel burn, eliminating hesitation under load and stabilizing idle quality. Note: This kit specifically replaces the round-body D514A/UF414 coil, not the square-body D510C/UF413 design.

Technical Specifications

Compatibility

• Cadillac Escalade
• Chevrolet Avalanche
• Chevrolet Silverado
• Chevrolet Suburban
• Chevrolet Express
• Chevrolet Tahoe
• Chevrolet Trailblazer
• GMC Savana
• GMC Yukon
• Hummer H3
• Note: Only applicable to vehicles equipped with ROUND coils (UF414 / D514A), not suitable for square coils (UF413 / D510C).

The Chevrolet Heavy-Duty Caliber

Whether hauling a heavy payload, towing a trailer, or managing daily driving duties, ensuring a highly reliable spark is critical to your GM truck's longevity and performance. This upgraded ignition suite ensures maximum towing torque and consistent power delivery without CEL interruptions.