Sinister Blue Spring W/Adjustable Spring Housing & Filter Cap 03-07 Ford 6.0L Powerstroke BOSCH-BOS0250603010 Factory hardware is used for

Factory hardware is used for install

The VIPER PhatShaft 63 was designed to handle mild to aggressive fueling upgrades to increase overall performance

7L's as they featured a plastic oil pan

CRITICAL DIFFERENTIAL PROTECTION

you will have to drill and tap the block to accept the 14mm studs

Sinister Blue Spring W/Adjustable Spring Housing & Filter Cap 03-07 Ford 6.0L Powerstroke BOSCH-BOS0250603010 Factory hardware is used forIncrease your fuel pressure by 10psi and help your 6. 0L Ford Powerstroke run better and longer with the Sinister Diesel Blue Spring Kit with Billet Adjustable Housing and Billet Filter Cap. The blue spring kit is one of the quickest and easiest upgrades you can install on your 6. 0L Ford Powerstroke. This kit not only helps with longevity, it can also quiet the engine down, and rev up faster which in turn helps spool the turbo faster. Maintaining