TC Bros. Aluminum Filler Cap

A TC Bros Aluminum Vented Filler Cap with Bung for Oil or Gas Tanks for a gas tank and a chopper.

360°

A TC Bros Aluminum Filler Cap for Oil or Gas Tanks - Vented on a white background and CNC Machined.

A close-up of the TC Bros. Aluminum Filler Cap, a CNC billet aluminum chopper oil tank cap by TC Bros., features a knurled edge and a black rubber O-ring for secure sealing.

A TC Bros. stainless steel threaded nut and a TC Bros. custom oil tank with the TC Bros Aluminum Unvented Filler Cap with Bung for Oil or Gas Tanks.

360°

$25.95

Type

Vented

No Vent

Style

No Bung

With Bung

In stock
Inventory on the way

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TC Bros. Aluminum Filler Cap

You touch your fill cap every time you check your oil or put fuel in your tank. It would logically follow that the cap should perform reliably, open and close easily, and look dang good doing it. Evidently this one caught your eye—just as it's supposed to.

1-5/16"-12 thread
Fits many chopper oil bags and gas tanks including tanks by Mooneyes and TC Bros.
CNC-machined
6061 billet aluminum construction
Knurled for positive grip
Leak-free, replaceable sealing O-ring
Classic dome top contour
100% made in USA
Available vented or without vent
Available with or without weld-in bung (1018 mild steel) for custom applications

This filler cap fits our round oil tank should you need a replacement, and it can also serve as a reliable, good-looking cap for many aftermarket oil and fuel tanks that feature the same thread pitch—and many do. And if you like the style but have a different cap (or maybe none at all), our weld-in bungs are a great way to add a fill port anywhere one is needed—the 1018 mild steel is easy to weld in most oil bags and fuel tanks.

The vented cap is a good option for oil bags with a remote-mounted filler or single-filler cap fuel tanks, and the unvented version is a better option if the cap sits close to the fluid in an externally vented vessel.