Riffraff Diesel Technical Knowledge Center
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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WARN Premium Hub Set (38826): manual 4x4 hubs that actually stay locked
May 1st 2026
If you’re done trusting (and fighting) the aging factory 4x4 hubs (or anything with plastic where it shouldn’t be), the WARN Premium Hub Set (38826) is the industry-standard fix: all-metal
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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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Top 10 7.3 Powerstroke Parts to Replace Before They Leave You Stranded
Apr 29th 2026
The 7.3L Powerstroke has earned its reputation the honest way: by generally refusing to die for decades. But even the best diesel ever stuffed into a Ford pickup is still attached to 20-plus-year-old
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7.3 Powerstroke Fuel Feed Line Kit (99–03): Stainless Braided JIC Upgrade
Apr 23rd 2026
Why 7.3 owners replace the factory hard lines
The OEM hard lines from the fuel bowl to both heads are known for being worn, restrictive, and failure-prone as trucks age—and when one breaks, it&r
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