Sinister Diesel Adjustable Blue Spring Kit with Billet Spring Housing for 2003-2007 Powerstroke 6.0L (Gray)
Special Features
- Adjustable fuel pressure so you can fine tune your performance
- Restores lost fuel pressure from a worn spring
- Not for Sale in California
- New OEM "Blue Spring"
- CNC Machined from T6-6061 billet aluminum
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