Genuine OEM Mitsubishi cylinder head bushing for the 4G63 Evo 1-9, 1G/2G DSM and GVR4 models. When feeding your turbo from the oil filter housing, you need to plug the factory hole on the 4G63 heads.

This is the plug and crush washer you'll need!

Vehicle Fitment:
Mitsubishi 4G63
1992-2006 Evolution I-IX
1990-1999 Eclipse GST/GSX
1990-1998 Talon TSi
1990-1994 Laser RS
1991-1993 Galant VR4

Includes:
(1) Plug (MD137353)
(1) Gasket (STM-CCW-10)