Ignition Coil & Iridium Spark Plugs & Wire Chevrolet Suburban Tahoe (2015-2020) 5.3L 6.2L V8

High-Energy Ignition Coil & Spark Plug Kit for 2015-2020 Chevrolet Suburban, Tahoe

What it Does: Replaces degrading OEM ignition components with a high-output 26,000V coil pack, iridium spark plug, and 8mm wire package to restore consistent spark timing and resolve misfire conditions under heavy engine loads.

The Stock EcoTec3 Ignition Weakness

Over time, the factory Gen V small block ignition coils and standard wires are susceptible to severe thermal degradation from extreme under-hood temperatures. This continuous heat cycling breaks down the internal epoxy potting and deteriorates the copper windings, significantly increasing electrical resistance. The result is a weakened spark that struggles to ignite the highly compressed air-fuel mixture in direct-injected 5.3L and 6.2L engines. This leads to engine backfiring, cylinder misfires (often throwing CEL and VSC warnings), hesitation, poor gas mileage, and rough idling. The factory plug wires also become brittle, allowing voltage leakage and arcing before the electrical energy ever reaches the cylinder.

The Engineering Solution

This comprehensive ignition overhaul directly addresses OEM thermal vulnerabilities. The upgraded ignition coils feature superior internal copper windings and high-temperature epoxy construction, boosting energy output by 20% over standard coils to deliver a maximum voltage of 26,000V. This high-energy spark ensures complete combustion. The kit pairs these enhanced red ignition coils with premium rare-metal iridium spark plugs (41-114), selected for their extremely high melting point and stable conductivity to produce a concentrated, powerful arc. Furthermore, the included 8mm spark plug wires utilize high-temperature resistant silicone and dedicated heat shields to eliminate radio frequency interference (RFI) and prevent voltage drop. Integrated wire separators prevent cross-firing, resulting in restored towing power, stabilized idling, and optimized fuel economy.

Technical Specifications

Compatibility

• 2015-2020 Chevrolet Suburban 5.3L V8
• 2015-2020 Chevrolet Suburban 6.2L V8
• 2015-2020 Chevrolet Tahoe 5.3L V8
• 2015-2020 Chevrolet Tahoe 6.2L V8

The Chevrolet Caliber

When towing heavy loads or hauling the family, a consistent and powerful spark is non-negotiable. This ignition upgrade ensures your GMTK2XX SUV maintains optimal power delivery and uncompromising durability, completely eliminating hesitation and efficiency losses under heavy mechanical load.