EVIL ENERGY Diesel Fuel Pressure Regulator for Dodge Ram 5.9L Cummins (2003–2007) — Adjustable OE-Fit

EVIL ENERGY 0928400666 is an adjustable diesel fuel pressure regulator engineered to replace OE part numbers 0928400666, 4932457, and 5183245AA for 2003–2007 Dodge Ram 5.9L Cummins engines.

This direct-replacement regulator restores and stabilizes fuel pressure for Dodge Ram Cummins 5.9L trucks from 2003 through 2007. Built from durable materials and designed to match factory dimensions (inlet port diameter 0.12 in), it helps the injector system keep a consistent fuel-to-boost ratio under varying loads. Before ordering, verify your vehicle uses one of the listed OE numbers to ensure fitment.

How does this regulator affect daily driving and towing?

By maintaining steady fuel pressure relative to intake boost, the regulator helps the engine respond predictably when accelerating, hauling, or towing. Stable pressure reduces abrupt power dips and supports more consistent combustion across RPM ranges.

• Keeps fuel supply steady during variable load and boost conditions
• Improves throttle response under towing or heavy-load situations
• Helps limit black smoke caused by over-fueling

Will this part fit my 2003–2007 Cummins 5.9L Dodge Ram?

This EVIL ENERGY regulator is compatible with Dodge Ram trucks equipped with the 5.9L Cummins diesel from model years 2003 to 2007 when replacing OE numbers 0928400666, 4932457, or 5183245AA. Check your vehicle’s current regulator or parts manual to confirm the matching OE reference before purchase.

• Fitment: 2003–2007 5.9L Dodge Ram Cummins
• OE numbers replaced: 0928400666, 4932457, 5183245AA
• Inlet port diameter: 0.12 in — verify against your existing unit

What are the signs that the fuel pressure regulator needs replacement?

A failing regulator often causes drivability and emission symptoms because fuel pressure control is critical to injection timing and quantity. If you notice these warning signs, inspect the regulator and associated fuel system components promptly.

• Illuminated check engine light related to fuel or pressure codes
• Poor fuel economy, rough idle, or reduced engine performance
• Excessive black exhaust smoke during acceleration

How is this EVIL ENERGY unit built and what should I expect in quality?

The regulator is manufactured from robust materials designed for diesel service and engineered to match OEM fitment dimensions. Expect a straightforward mechanical replacement that restores designed fuel pressure behavior when installed correctly.

• Constructed with durable, corrosion-resistant materials
• Engineered to match factory mounting and port dimensions
• Adjustable design supports consistent fuel-to-boost regulation

Who is this for: This regulator is intended for owners, mechanics, and fleet technicians working on 2003–2007 Dodge Ram trucks with the 5.9L Cummins who need a reliable OE-replacement fuel pressure regulator. Choose this part if you require a direct-fit unit that replaces OE numbers 0928400666, 4932457, or 5183245AA and want to restore consistent fuel pressure for improved drivability and combustion control.