This ACL High Performance main bearing set is standard size with extra oil clearance built in (a thinner bearing shell for higher oil flow), for the Mitsubishi 4G63/4G64 7-bolt inline-4 used in 2nd generation DSM platform cars and the Lancer Evolution I-IV. It's sized for a stock, unmachined crankshaft journal. Fits the Eagle Summit (1993-1996), Mitsubishi Eclipse GS/GST/GSX/RS/Spyder GS/Spyder GST (1995-2005), Mitsubishi Expo/Expo LRV (1993-1995), Mitsubishi Galant DE/ES/GS/LS/S (1994-2003), Mitsubishi Lancer Evolution/Evolution MR/RS/SE (2005-2006), and Mitsubishi Montero Sport ES (1997-1999).
Specifications:
- Type: Main Bearing Set
- Series: High Performance
- Size: Standard with Extra Oil Clearance
- Engine Fitment: Mitsubishi 4G63/4G64 7-Bolt Inline-4
- Vehicle Platform: Eagle Summit; Mitsubishi Eclipse, Expo/Expo LRV, Galant, Lancer Evolution I-IV, Montero Sport
- Part Number: 5M1186HX-STD
FAQ
What does "extra oil clearance" mean on this bearing?
It's a standard-size bearing machined thinner than the base Standard bearing, which increases oil clearance for higher oil flow.
What engine does this main bearing set fit?
It's designed for the Mitsubishi 4G63/4G64 7-bolt inline-4 used in 2nd generation DSM platform cars and the Lancer Evolution I-IV.
Which vehicles use this engine?
It's found in the Eagle Summit, Mitsubishi Eclipse, Expo and Expo LRV, Galant, Lancer Evolution I-IV, and Montero Sport.

