6 High Performance Ignition Coil for Dodge Jeep (2002-2008) 3.7L Engine

High-Output Ignition Coils for 2002-2008 Dodge & Jeep (PowerTech V6/V8)

What it Does: This set of high-performance ignition coils replaces the failure-prone UF270 factory units to restore ignition sequence precision and eliminate high-load misfires in 3.7L and 4.7L PowerTech engines.

The Stock PowerTech Weakness

The OEM ignition system in the Chrysler PowerTech engine family (3.7L V6 and 4.7L V8) is frequently compromised by thermal fatigue and dielectric breakdown. Because these coils are positioned deep within the cylinder head's spark plug wells, they are subjected to extreme heat soak. Over time, the factory epoxy resin develops micro-fractures, allowing voltage to leak to the engine block rather than reaching the spark plug gap. This degradation leads to intermittent stumbling, increased long-term fuel trims, and the dreaded P0300-P0308 misfire codes. Additionally, the stock internal windings often suffer from resistance fluctuations as they age, resulting in a weak spark that cannot effectively ignite the air-fuel mixture under the higher cylinder pressures seen during towing or uphill acceleration.

The Engineering Solution

These high-performance replacements are engineered with upgraded high-temperature silicone boots and a reinforced high-dielectric epoxy potting compound to resist thermal cracking. The internal secondary windings feature a higher density of copper wire, which increases the total voltage potential and spark duration. This ensures a more complete combustion cycle, even in leaner-running conditions common with aging vacuum systems. By utilizing a low-resistance magnetic core, these coils reduce the energy lost to heat within the unit itself, prolonging the life of the internal electronics. The included tune-up grease is essential for sealing the plug-to-coil interface, preventing moisture intrusion and corona discharge that can lead to carbon tracking and premature terminal failure.

Technical Specifications

Compatibility

• 2006-2008 Jeep Commander 3.7L V6
• 2004-2008 Dodge Dakota 3.7L V6
• 2004-2008 Dodge Durango 3.7L V6
• 2005-2008 Jeep Grand Cherokee 3.7L V6
• 2002-2008 Jeep Liberty 3.7L V6
• 2007-2008 Dodge Nitro 3.7L V6
• 2002-2008 Dodge Ram 1500 3.7L V6

The Mopar Performance Standard

Designed for the heavy-duty cycles of Dodge trucks and Jeep SUVs, these coils are built to handle the rigors of off-road vibration and heavy-payload towing. Restoring your ignition system with high-output components ensures your PowerTech engine maintains the reliable torque and throttle response required for demanding work environments and trail use.

Common Questions

Will this 6-coil set fit my 2005 Jeep Grand Cherokee 3.7L V6?
Yes. This 6-pack is a direct replacement for the 2005-2008 Jeep Grand Cherokee 3.7L V6, as well as 2002-2008 Liberty, 2006-2008 Commander, 2002-2008 Ram 1500, 2004-2008 Dakota and Durango, and 2007-2008 Nitro 3.7L V6 models.

Can I use this set on a 4.7L V8 engine?
While individual UF270 coils match the 1999-2007 4.7L PowerTech V8, this package includes 6 coils specifically sized for a full tune-up on the 6-cylinder 3.7L V6 engine. A 4.7L V8 engine requires 8 coils for a complete replacement.

What OEM part numbers do these ignition coils replace?
These coils directly replace factory and aftermarket part numbers UF270, 5C1114, and 56028138AF.

What is included in the package?
The package includes 6 high-output ignition coils with pre-installed high-temperature silicone boots and tune-up grease for sealing the plug-to-coil interface.

How do these upgrade over the factory PowerTech coils?
They are built with a low-resistance magnetic core, denser secondary copper windings, high-temperature silicone boots, and reinforced high-dielectric epoxy potting to resist thermal cracking and voltage leaks in deep spark plug wells.