Answer
Oct 28, 2025 - 03:23 PM
Yes, the Sinister Diesel Blue Spring Kit with Adjustable Billet Spring Housing and Fuel Filter Cap for 2003-2007 Powerstroke includes an adjuster xxxx in the spring housing. This feature lets you precisely fine-tune fuel pressure, optimizing injector performance, compensating for large injectors or spring fatigue, and ultimately maximizing both injector lifespan and overall engine efficiency.
