Hi Hampton,
I believe the Mitsubishi threads are 10mm while the threads on the aftermarket oil pressure sending unit are 3/8" pipe thread. You can either tap the sending unit hole or buy an metric to pipe thread adapter kit. I found an adapter kit for about $40.
John
Hi Hampton,
I can't remember when or where I bought it, much less the part number. The only place I could have ordered it from was Checkers (O'Reilly's), Advanced Auto Parts, AutoZone or NAPA.
Sorry I couldn't be of more help,
John
P.S. I found the receipt for it: NAPA, adapter kit, part number 701-1546, $41.49.