The factory 6.0L / 6.4L oil filter housing cap gets removed constantly, heat-cycled constantly, and (let’s be honest) occasionally over-tightened. It lives a rough life, especially for plastic. Our solution is the Riffraff Diesel Billet 6.0L / 6.4L Oil Filter Housing Cap (RDP-6L-OBC), built to make filter changes feel less like a gamble.

 

Why this cap exists

This is a direct upgrade that replaces the OEM-style cap with 6061 billet aluminum, so it’s more durable and more consistent at sealing over repeated service intervals. It’s also 100% Made in the USA and anodized for a long-lasting appearance.

 

Key features

• 6061 billet aluminum construction
• Anodized finish
• DuPont® Viton O-ring included
• -4 ORB port plug with DuPont® Viton O-ring for oil pressure sampling (clean, built-in place to grab pressure when diagnosing)
• Designed to fit the superior filtration of the Motorcraft® filter

 

Fitment note

• Does not fit E-Series Powerstrokes.

 

Care tip (don’t ruin the finish)

• Anodized aluminum can be discolored/damaged by chemical engine cleaners—use soap and water.

 

Bottom line: If you've been searching for a “6.0 billet oil filter cap” or “6.4 billet oil filter housing cap,” this is the do-it-once replacement that upgrades sealing confidence and adds a built-in pressure sampling port.

Check Them Out: https://www.riffraffdiesel.com/riffraff-diesel-billet-6-0l-6-4l-oil-filter-housing-cap-03-10/