The Sinister Diesel SD-FUELREG-6.0 Regulated Fuel Return Kit is designed for 2003-2007 Ford F-250 and F-350 Super Duty trucks equipped with the 6.0L Powerstroke diesel engine. This complete fuel system upgrade helps maintain consistent fuel pressure, supporting injector longevity while providing the adjustability needed for a range of power levels. The kit includes all required components and does not require additional parts for installation, aside from the recommended 3/8-inch quick-disconnect tool.
Built for durability and reliable performance, the kit combines CNC-machined billet aluminum components with stainless steel braided fuel lines and nickel-plated fittings. The blue anodized finish provides added surface protection and a clean appearance. An adjustable fuel regulator allows precise pressure control, while the oil-filled fuel pressure gauge makes it easier to monitor system pressure during operation and adjustment. Protective covers help shield the braided lines from abrasion in the engine compartment.
Included components are the Sinister Diesel fuel filter block, adjustable fuel regulator, oil-filled fuel pressure gauge, high-flow fuel lines, retaining clips, and protective braided-line covers. For improved system longevity, Sinister Diesel highly recommends installing a lift pump or fuel air separator with additional filtration. Installation requires a 3/8-inch quick-disconnect tool. This product is not legal for sale in California and is not CARB approved; verify applicable emissions regulations before purchase or installation. Fits select 2003-2007 Ford F-250 and F-350 Super Duty models with the 6.0L Powerstroke diesel engine.
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