Riffraff Diesel Technical Knowledge Center
OBS 7.3 Powerstroke EOT Sensor Swap: Updating the Obsolete 1994–1997 Oil Temp Sensor
Posted by Adam Blattenberg on Jul 8th 2026
Some 1994.5–1997 OBS 7.3 Powerstroke trucks used an early-style EOT sensor that is now obsolete. If your truck still has that old Engine Oil Temperature sensor and it fails, the correct repair i
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Riffraff Diesel Billet Valve Cover Set for 1994–2003 7.3 Powerstroke
Jul 6th 2026
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
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Riffraff Diesel Billet Intake Manifold Plenums for 1994–2003 7.3 Powerstroke
Jul 6th 2026
The factory 7.3 Powerstroke intake plenums are thin stamped metal, and the intake mouths can bend from clamp pressure. Once that happens, the truck can develop boost leaks at the boots or plenum seal&
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Riffraff Diesel Billet HPOP Reservoir Body for 1996–2003 7.3 Powerstroke
Jul 3rd 2026
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
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6.0 Powerstroke P0299 and P0234: Underboost, Overboost, VGT, or Boost Leak?
Jul 3rd 2026
A 6.0L Powerstroke with P0299 underboost or P0234 overboost is telling you the turbo system is not matching what the PCM commanded. That does not automatically mean the turbo is bad. Before repla
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