Injector cups (aka injector sleeves) are the thin barrier that keeps high-pressure fuel and engine coolant from turning into one nasty mix. When that barrier fails, the usual concernt is fuel in the c … read more

At Riffraff, we stock the PHP Hydra Chip because it fixes the two biggest problems with old-school 7.3 tuning: not knowing what tune you’re on and being stuck with whatever tune was installed ye … read more

A 7.3 Powerstroke thermostat housing leak often starts small—coolant smell, dried residue near the upper hose, or a slow drip that usually only shows up after a heat cycle. On 1999–2003 7. … read more

The 7.3L Powerstroke (1994–2003) earned its reputation the old-school way: simple, durable, and willing to work for a living. But even the legendary 7.3 has predictable wear points—especia … read more

The stock 6.0L Powerstroke thermostat housing has one job: seal. And then, eventually, it… doesn’t. Corrosion + heat cycles = seepage. Riffraff Diesel has the fix: The 6.0L Billet Thermos … read more