High Performance Ignition Coil for Workhorse W42 W62 (2009-2011) 4.8L 6.0L

High-Output UF414 Ignition Coils for 2009-2011 Workhorse W42, W62 (GM Gen IV V8)

Upgrades the standard ignition system to deliver a stronger, more consistent spark for improved combustion efficiency under heavy commercial loads.

The Stock W42, W62 Ignition Weakness

Commercial step vans and fleet vehicles operate in high-idle and heavy-load conditions that generate severe under-hood temperatures. The OEM GM Gen IV coils utilized in the Workhorse chassis are prone to thermal degradation over time. Constant heat soak breaks down the internal epoxy resin, leading to micro-cracks in the coil housing. This breakdown allows moisture intrusion and causes primary voltage leaks, resulting in misfires, rough idling, and diminished torque under load. For a delivery vehicle pulling thousands of pounds of cargo, a weak spark directly translates to poor fuel economy, increased emissions, and sluggish throttle response.

The Engineering Solution

These upgraded UF414 replacement coils are engineered to exceed factory specifications by utilizing high-temperature epoxy and premium internal copper windings. The enhanced core design ensures rapid energy transfer, maximizing spark energy output while optimizing dwell time. By stabilizing magnetic field generation, these coils eliminate high-RPM spark blowout and low-RPM shudder under heavy acceleration. The external housings are molded from specialized dielectric polymer blends that resist thermal cycling, preventing the micro-cracking common in standard OEM coils. This ensures a consistent, high-voltage spark is delivered directly to the plug, optimizing the air-fuel burn for maximum torque extraction and long-term fleet reliability.

Technical Specifications

Compatibility

• 2009 Workhorse W42 (4.8L / 6.0L V8)
• 2009 Workhorse W62 (4.8L / 6.0L V8)
• 2010 Workhorse W42 (4.8L / 6.0L V8)
• 2010 Workhorse W62 (4.8L / 6.0L V8)
• 2011 Workhorse W42 (4.8L / 6.0L V8)
• 2011 Workhorse W62 (4.8L / 6.0L V8)

The Workhorse Durability Standard

Built for fleet operators and commercial rigs, these upgraded ignition coils ensure maximum uptime, consistent towing power, and robust reliability under the most demanding delivery routes.