Sinister Diesel 6.0L Power Stroke Blue Spring Kit with Adjustable Housing & Fuel Filter Cap
Refresh your fuel pressure regulator with the Sinister Diesel Blue Spring Kit for 2003–2007 Ford 6.0L Power Stroke applications. This package includes an adjustable billet spring housing, a replacement blue spring and a billet fuel filter cap, along with the gaskets, O-rings and installation hardware.
The housing's adjustment screw and jam nut let you fine-tune fuel pressure rather than relying on a fixed spring setting. The fuel filter cap includes a 1/8-inch NPT port for fuel-pressure testing. CNC-machined 6061-T6 billet aluminum components and Sinister Blue anodizing add corrosion resistance and a coordinated appearance.
Not compatible with Ford E-Series vehicles.
Key features
- Replacement blue spring to help restore pressure lost through spring wear.
- Adjustable billet spring housing with adjustment screw and jam nut.
- Billet aluminum fuel filter cap with a 1/8-inch NPT pressure-testing port.
- CNC-machined 6061-T6 billet aluminum construction.
- Sinister Blue anodized finish and laser-etched Sinister Diesel logo.
- Replacement gaskets and O-rings included.
Vehicle fitment
2003–2007 Ford F-250 and F-350 with the 6.0L Power Stroke diesel engine. The supplied fitment information also lists the Ford Excursion with the 6.0L engine; confirm your model year and application before ordering.
Excludes E-Series applications.
What's included
- 1 Sinister Diesel adjustable billet spring housing.
- 1 Sinister Diesel fuel filter cap.
- 1 replacement blue spring.
- 1 gasket/O-ring set.
- Installation hardware.
Installation and pressure adjustment
The supplied product information estimates approximately 30 minutes for installation; actual time varies with experience and vehicle condition. It lists a recommended fuel-pressure range of 55–68 psi. Verify pressure with a suitable gauge and follow the manufacturer's installation guidance for your application.
Part number: SD-FUELBLK-6.0-ADJ-FFC.