Weld-On Boss for Mazda Oil Filler Caps

Franklin Performance Weld-on boss to suit rotary shaped oil filler caps and standard Mazda oil filler caps. Great for making custom catch cans, dry sump tanks, overflow bottles etc.

The weld-on bosses manufactured with 6061-T6 aluminium.

They sit 15mm high, and have a 38mm diameter x 3mm long spigot on the bottom to locate into the tank it's to be welded to.