The factory 7.3 Powerstroke valve covers do their job, but they are still thin stamped covers on a 20+ year old truck. When sealing matters, rigidity matters. That’s why we built the Riffraff Di … read more

The 7.3 Powerstroke HPOP reservoir cover is one of those small parts that gets annoying fast when the fill plug is stripped, the cover is tired, or the reservoir needs to be topped off without making … read more

The 7.3 Powerstroke HPOP reservoir feeds oil to the high-pressure oil system. When the factory cast reservoir cracks, leaks, or has damaged threads, it can create oil leaks in the valley and make diag … read more

On 1994–1997 OBS 7.3 Powerstrokes, the upper heater hose routing can get sloppy over time. When it droops, it doesn’t just look messy—it can rub on alternator wiring/connectors and c … read more

On a 7.3 Powerstroke, piston oil jets (piston cooling jets) are there for one reason: aim oil at the underside of the piston crown to pull heat out of the piston (and maybe to lube the wrist pin). Whe … read more