The 1/2"X20 oil drain plug was used historically all the way up to the late 80's and early 90's. Check your vehicle to be sure.......screw your drain plug into a 1/2"X20 nut and if it fits, that's what it is.

Now that the size is identified, it is time to screw in the latest and greatest drain plug ever devised, the SS 1/2"X20, Dimple® Super Magnetic Drain Plug.

Requires no replaceable gaskets.

Seals with a Conical fit with a back up O Ring.

Guaranteed not to leak, or back out regardless of heat or vibration! This size fits all Harley's and Harley Riders Love them. They are 100 times stronger than a stock Harley magnetic drain plug.

$29.95