Riffraff Diesel Technical Knowledge Center
7.3L Powerstroke Injector Tear Down: What's Inside?
Posted by Adam Blattenberg on May 5th 2026
The 7.3 Powerstroke’s HEUI injection system relies on oil pressure to fire the injectors. Unlike most light duty diesel injection systems on the road today, where the pump (CP3, CP4, VE, VP, etc
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Diesel World Magazine - Riffraff Diesel Swag Giveaway
May 5th 2026
This Months items are below! Click the link for more:
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Riffraff Diesel Red, Whi
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Riffraff Diesel Billet Oil Cooler/Filter Assembly for 7.3 Powerstroke (1994–2003 F-Series)
May 5th 2026
On a 7.3 Powerstroke, the oil cooler “assemblies” (aka headers or mounts) aren't just end caps—they're the oil filter base, and the in/out for oil and coolant into the cooler. It&rsq
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Top 10 Fuel System Upgrades for the 7.3 Powerstroke
May 4th 2026
The 7.3L Powerstroke is simple, reliable, and painfully honest. If fuel supply is weak, dirty, restricted, aerated, or leaking, the truck will let you know.
Fuel system upgrades are not just for big i
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The Right Hubs: 1999–2004 F-250/F-350 4WD Wheel Bearing & Hub Assembly (Coarse Thread)
May 1st 2026
If you’re hunting a replacement front wheel bearing/hub assembly for a 1999–2004 Ford F-250/F-350 4WD, the first thing that matters is stud thread pitch. This Axiom unit is specifically fo
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