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 cover
Very nice piece I would not do this job without that piece. It would be dumb not to make this upgrade whenever you have to mess with it exhaust back pressure valve or the HPOP. I guess the only problem I have is that Riff Raff stuff doesn’t come in billet aluminum finish
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Bolt access cover
This access cover is nothing less than a great product I'm very happy with it made installing my new back pressure tube a breeze. The old flimsy factory one is junk every 7.3 owner should get this very well made and simple to install
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HPOP access
Awesome quality and great fit!
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Great product
This is an awesome upgrade from the stock messy silicone cover. Nice quality o’ring, it bolted up perfectly.
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Hpop access cover
Bought this because my first hpop gasket didn't work leaked at center bottom. Bought this Incase the second one leaked. I bought a Ford gasket for the hpop and no problems. Both sealed up great, wished I'd bought the access cover the first time because it's a pain cleaning the silicone off with the motor in the truck.
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Far superior
Better than stock by a long shot. if you're replacing your Hpop or cleaning your exhaust back pressure tube this is a must. Thicker and better quality than stock, no more bending the thin sheet metal on the stock Hpop bolt cover or having to deal with silicone gaskets in such a tight space.
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Excellent Replacement
This is a vast improvement over the stock sheet metal cover. Very thick and robust, not to mention the oring seal is way better than dealing with RTV.
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love this cover
Was searching for the o-ring that went behind the original cover when I stumbled upon this looked at the construction of it and said why not I am so glad that I bought this the construction is superb fits perfectly and has the reinforcement needed for the backflow preventing stuff it's a great product everyone should buy it.
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Very nice part
Nice Job on this Hpop bracket, won't bend, no silicone to seal it, does what it's made for, quick access.






