Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

Prism Supply Co. Petcock 3/8" NPT

$179.95

🚚 Free Canada-wide shipping on orders over $199 (excluding oversized items)

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The Prism Supply Co. 3/8" NPT Petcock threads directly into a 3/8" NPT bung on your gas tank for a clean, flush look with no external hardware cluttering your build. A 5/16" diameter hose barb on one end and a built-in fuel filter on the other keep your fuel system tidy and protected. Toggle fuel on and off by rotating the cylindrical piece — the fuel line stays stationary while you do it.

We recommend pairing this with 1/4" fuel line for a snug, leak-proof fit.

Lifetime Guarantee: All Prism Supply Co. petcocks are guaranteed for life. If you ever have an issue, send it back and they'll rebuild it at no charge.

Specifications

Thread: 3/8" NPT (National Pipe Thread — tapered, seals on tightening)
Hose barb: 5/16" diameter
Built-in fuel filter included
Twist on/off — fuel line does not rotate during operation
No reserve
Available in Straight or 90° outlet, Brass or Stainless Steel

NPT Compatibility Note

Many custom and aftermarket gas tanks use a 3/8" NPT petcock bung. NPT (National Pipe Thread) is a tapered thread that seals as you tighten the petcock into the fitting. If your tank has a 22mm bung, adapter nuts are available in brass or chrome to convert it to accept 3/8" NPT petcocks.

Available Options

Brass / Straight — classic warm finish, standard inline routing
Stainless / Straight — corrosion-resistant, standard inline routing
Brass / 90° — classic warm finish, ideal for tight or angled fuel line routing
Stainless / 90° — corrosion-resistant, ideal for tight or angled fuel line routing