The Fuel Pressure Regulator “Blue Spring” Kit (AP0086) fixes a boring problem that becomes an expensive one: low fuel pressure on a 6.0L. This updated spring restores fuel pressure back to … read more

If the non-serviceable plug at the bottom of your HPOP is leaking, the factory short-thread plug has likely stripped the threads in the aluminum housing. This long-thread replacement plug is made from … read more

Recommended Tools: 8mm socket 10mm socket Extension for 10mm socket In‐lb torque wrench Drain pan Bag of oil dry or plastic sheet   Recommended Items: Transmission fluid  ( 5‐7 qts. may b … read more

Parts required: Stainless Steel HPX 94-97: https://www.riffraffdiesel.com/stainless-steel-hpx-94-97/ Stainless Steel HPX 99-03: https://www.riffraffdiesel.com/stainless-steel-hpx-99-03/   Recomme … read more

If your OBS 7.3 (’94.5–’97) has random misses, contribution codes, rough cold starts, or the classic “it runs better when I wiggle the valve cover plug”… you&rsquo … read more