ACL BMW M20/M50/M52/M54 - 1919CC 80.0mm Bore 66.0mm Stroke .25 Oversized Main Bearing Set

• High performance Trimetal engine bearings
• Designed to withstand higher RPM conditions
• High strength overlay plate with reduced thickness for improved fatigue properties

• High strength overlay plate with reduced thickness for improved fatigue properties
• Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing.
• Increased crush for improved bearing retention
• Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing.
• Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films.
• 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings.
• Tight consistent wall tolerances to help you maintain consistent clearances.
• Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.

Fits
BMW    M20B20    BMW M20B20 1991cc Inline6 SOHC 2v    
BMW    M20B23    BMW M20B23 2315cc Inline6 SOHC 2v    
BMW    M20B25    BMW M20B25 2494cc Inline6 SOHC 2v    
BMW    M20B27    BMW M20B27 2693cc Inline6 SOHC 2v    
BMW    M21D24 W    BMW M21D24 W 2443cc Inline6 SOHC 2v Diesel    
BMW    M21D24 WA    BMW M21D24 WA 2443cc Inline6 SOHC 2v Turbo Diesel    
BMW    M50B20    BMW M50B20 1991cc Inline6 DOHC 4v    
BMW    M50B20TU    BMW M50B20TU 1991cc Inline6 DOHC 4v    
BMW    M50B25    BMW M50B25 2494cc Inline6 DOHC 4v    
BMW    M50B25TU    BMW M50B25TU 2494cc Inline6 DOHC 4v    
BMW    M51D25    BMW M51D25 2498cc Inline6 SOHC 2v Turbo Diesel    
BMW    M51D25 (Int)    BMW M51D25 2498cc Inline6 SOHC 2v Turbo Diesel (Int)    
BMW    M52B20    BMW M52B20 1991cc Inline6 DOHC 4v    
BMW    M52B20TU    BMW M52B20TU 1991cc Inline6 DOHC 4v    
BMW    M52B25    BMW M52B25 2494cc Inline6 DOHC 4v    
BMW    M52B25TU    BMW M52B25TU 2494cc Inline6 DOHC 4v    
BMW    M52B28    BMW M52B28 2793cc Inline6 DOHC 4v    
BMW    M52B28TU    BMW M52B28TU 2793cc Inline6 DOHC 4v    
BMW    M54B22    BMW M54B22 2171cc Inline6 DOHC 4v    
BMW    M54B25    BMW M54B25 2494cc Inline6 DOHC 4v    
BMW    M54B30    BMW M54B30 2979cc Inline6 DOHC 4v    
BMW    M57D25    BMW M57D25 2497cc Inline6 DOHC 4v Turbo Diesel    
BMW    M57D30    BMW M57D30 2926cc Inline6 DOHC 4v Turbo Diesel    
BMW    M57N 306 D2    BMW M57N 306 D2 2993cc Inline6 DOHC 4v Turbo Diesel    
BMW    M57N 306 D4    BMW M57N 306 D4 2993cc Inline6 DOHC 4v Turbo Diesel    
BMW    S50B30    BMW S50B30 2990cc Inline6 DOHC 4v    
BMW    S50B32    BMW S50B32 3201cc Inline6 DOHC 4v    
BMW    S52B32    BMW S52B32 3152cc Inline6 DOHC 4v    
BMW    S54B32    BMW S54B32 3246cc Inline6 DOHC 4v    
Opel    X25TD    Opel X25TD 2498cc (BMW) Inline6 SOHC 2v Turbo Diesel    
Opel    Y25TD    Opel Y25TD 2497cc (BMW) Inline6 SOHC 2v Turbo Diesel    
Rover    M57D30    Rover M57D30 2926cc Inline6 DOHC 4v Turbo Diesel