Riffraff Diesel HPOP Bolt Access Cover w/ EBP 99-03
The Patent Pending Riffraff Diesel High Pressure Oil Pump Gear Bolt Access Cover is a robust billet aluminum replacement for the thin factory stamped steel cover. Designed with a Viton® quad-seal O-ring for easy installation and leak-free service, it eliminates the need for messy RTV sealant required by the OEM cover.
Ford has discontinued OEM part number F81Z-9J432-AA. Riffraff Diesel now offers this premium, 100% Made in the USA replacement engineered for superior durability, serviceability, and long-term reliability.
Includes:
- CNC-machined 6061-T6 billet aluminum body
- Custom Viton® quad-seal O-ring
- Multiple anodized color choices
- Stainless steel mounting hardware
- 100% Made in the USA

Note: Anodized finishes may be discolored or damaged by harsh chemical engine cleaners. Clean with mild soap and water only.
Replaces Ford OEM Part Number: F81Z-9J432-AA (Discontinued)
50 Reviews Hide Reviews Show Reviews
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HPOP Bolt access cover.
Typical Riff Raff Diesel awesomeness. Perfect fit and great engineering. Thanks again Clay for great products and service.
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Hpop cover
I gotta say this little GEM is awesome and very well thought out. Luckily I've never had to replace one or re seal the stock one and I haven't had the chance to put this one on yet. I'm currently just waiting on my Adrenaline pump to get in and I'll do it all at once and be done with it. Very nice piece though I have no doubt it'll do the job without worrying about it breaking or bending and causing a huge headache.
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Wow
This thing is amazing just to look at. Such great design and machining. Nice clean install, no sealant needed.
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Very nice upgrade
I contemplated on getting this or not but now im glad i did. Very easy install and better than the oem plate. No more rvt when removing or installing as this cover comes with a high quality o-ring. I’ve had it on for about 3weeks now and no leaks. It not only looks great but its a very stout machined piece, much better than the flimsy factory cover that i bent.
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Wow!
All I can say is it is almost to pretty to put on my truck. The machining is top notch, and it is so nice not to deal with more RTV silicone next time I pull my HPOP to upgrade. Home run guys and the stainless hardware is a very cool addition.






