This ACL High Performance main bearing set is sized 0.025mm (0.001") over standard for the Mitsubishi 4G63/4G64 7-bolt inline-4, used in 2nd generation DSM platform cars and the Lancer Evolution I-IV. The 0.025mm oversize is for a crankshaft journal that has been reground to that undersize spec — not for a stock, unmachined crank. 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: 0.025mm (0.001") Oversized
- 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: 5M1186H-.025
FAQ
What does the 0.025mm oversize mean?
It means the bearing shell is 0.025mm (0.001") thicker than standard, sized for a crankshaft journal that has been reground to that undersize — it is not for a stock, unmachined crank.
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.
