TracTuff M10 x 1.25 to -4 Male Flare
$12.99
The M10 x 1.25 to -4 Male Flare port adapter is specifically made to convert the ports on my Coolant Bleed Bolt Bung, -8 ORB to M10 x 1.25 Bleed Bolt Adapter, H22 Thermostat Housing Delete, and RBB/ RBC Rear Wheel Drive K Swap Water Neck from an open and closed operation to a full flow vent.
NOTE: The special seat cut into the end of the M10 side bottoms out in the products listed above to convert to create a seal and eliminate the closed configuration. I recommend a small amount of liquid Teflon be used on the threads to prevent galling and to help sealing. The fitting can be used in conventional M10 x 1.25 threads but you may need to cut the extended tip off.