BSA Gas Tank Petcock Adapter 3/8" To 1/4" (1) Pre Unit Has a thread pitch of

Has a thread pitch of 18 TPI

Features a viton rubber tip that is compatible with today's modern fuel

Each rotor comes in different styles and finishes

then this is what you need

Also great for "universal" purposes

BSA Gas Tank Petcock Adapter 3/8" To 1/4" (1) Pre Unit Has a thread pitch ofNew BSA Gas Tank Petcock Adapter. If your gas tank accepts a larger 3 8" petcock but you would like to use a standard 1 4" Triumph petcock you can now do so by using this adapter. This adapter is a "reducer" and comes threaded on the inside straight pipe threads (BSP). Please refer to your parts catalog for proper fitment. *****Please read the complete listing to ensure the best fitment.***** Made in England O. E. M Part number is CBS 73119