High Performance Ignition Coil for Chevrolet Express 1500 2500 3500 4500 (2008-2019) 4.8L 5.3L 6.0L

High-Performance UF414 Ignition Coils for 2008-2019 Chevrolet Express (Gen IV Vortec / GMT610)

Replaces factory coil packs to eliminate misfires, restore fuel economy, and deliver a stronger spark for heavy-duty towing and hauling applications.

The Stock GMT610 Thermal Weakness

The GMT610 chassis is notorious for tight engine packaging, creating an environment highly susceptible to extreme heat soak, especially when the vehicle is under heavy payload or towing stress. The OEM factory ignition coils rely on standard internal windings and commercial-grade epoxy potting. Over multiple thermal cycles, the factory epoxy begins to micro-crack, allowing voltage to arc internally rather than reaching the spark plug. This parasitic voltage loss translates directly to sluggish throttle response, random multi-cylinder misfires under load, and unburnt fuel entering the exhaust system, diminishing overall mechanical efficiency.

The Engineering Solution

To combat harsh under-hood thermal dynamics, this UF414 replacement upgrade utilizes high-grade internal copper wiring capable of sustaining higher primary and secondary voltage outputs. The internal circuitry is encapsulated in a high-temperature thermal epoxy that actively resists degradation from extreme heat cycling. Additionally, the premium silicone boots are engineered to lock out moisture and prevent secondary voltage tracking. By exceeding OEM specifications, these coils deliver a hotter, more consistent spark (measured in millijoules) to the Gen IV Vortec combustion chambers, ensuring a complete burn. This optimizes torque delivery across the RPM range, exactly when the 4.8L, 5.3L, or 6.0L block needs it most.

Technical Specifications

Compatibility

• 2008-2014 Chevrolet Express 1500 (5.3L V8)
• 2008-2019 Chevrolet Express 2500 (4.8L, 5.3L, 6.0L V8)
• 2008-2019 Chevrolet Express 3500 (4.8L, 6.0L V8)
• 2009-2019 Chevrolet Express 4500 (6.0L V8)

The Chevrolet Fleet Durability Standard

Built to withstand brutal, high-idle conditions and heavy payload demands of commercial fleet usage, this coil upgrade ensures reliable ignition performance and long-term durability when it matters most on the job site.