and the Harley OEM numbers for each

Smart Design: A check-valve/anti-drain back valve prevents drain-back and dry starts (where applicable)

Tappet Oil Screen/Oil Pump Check Valve/Relief Valve Plug Set for 1970-1980 Harley-Davidson Big Twins

This is a brand new

Find install instructions for Triumph and BSA Twins below

Tophat Blind Threaded Steel Bung 1/4-20 Thread - 4 pack Vendor_JRC Engineering and the Harley OEM numbersThese tophat shaped, blind threaded steel bungs are perfect for making gas tank and oil tank mounts, or for any other fluid filled vessel. Mild steel for easy weldability. 1 2" OD with a 3 4" OD flange that is 1 8" thick. The overall length is 1". Featuring a 1 4" 20 thread. These blind threaded bungs are a perfect match for our rubber mount finger or triangular tabs to get your oil tank mounted in no time at all. Sold in 4 packs. Made in Ohio, USA.