- Sep 29, 2003
- STM - Mitsubishi O2 Housing to Downpipe Stud 1G/2G DSM
- ExtremePSI - OEM O2 Housing to Downpipe Stud: Mitsubishi Eclipse 90-99
- RTM Racing - OEM Stud (M12), Exhaust: DSM/EVO -- This site actually provides overall specifications for PN MD089315 as 42mm OAL, 22mm of threads on one and and 12mm of threads on the other. So 8mm section of no threads. May be close enough to what you're after?