The ACL Race Series Main Bearing (Part #5M1112H-STD) is a precision-engineered main bearing set designed for high-performance engine applications. These bearings support the crankshaft within the engine block, enabling smooth rotation while handling significant radial and thrust loads. Engineered for optimal oil film retention and wear resistance, ensuring consistent engine performance. Available in Standard size for direct replacement applications requiring OE clearances. Engineered with strict quality control standards to ensure consistent performance and reliable engine operation.

Applicable to: - Alfa Romeo Spider 2000 (AR 00512)
- Alfa Romeo Spider 2000 (AR 00515)
- Alfa Romeo Spider 2000 Veloce (AR 00515)
- Alfa Romeo Giulia 1600 Super (AR 00526)
- Alfa Romeo Giulia GT 1600 Super (AR 00526)
- Alfa Romeo Spider 1600 (AR 00526)
- Alfa Romeo GT 1600 (AR 00526 S)
- Alfa Romeo GT 1600 (AR 00536)
- Alfa Romeo Spider 1600 (AR 00536)
- Alfa Romeo 1750-2000 1750 (AR 00548)
- Alfa Romeo Berlina 1.8 (AR 00548)
- Alfa Romeo GTV 1750 (AR 00548)
- Alfa Romeo Spider 1750 (AR 00548)
- Alfa Romeo all 2.0 (AR 01212)
- Alfa Romeo Giulietta 1.8 Turbo (AR 01354)
- Alfa Romeo Spider 2000 (AR 01544)
- Alfa Romeo Spider 1600 (AR 01563)
- Alfa Romeo Spider 2000 (AR 01588)
- Alfa Romeo Spider 2000 Veloce (AR 01590)
- Alfa Romeo Alfetta 1.6 (AR 01600)
- Alfa Romeo Alfetta GT 1.6 (AR 01600)
- Alfa Romeo Giulietta 1.6 (AR 01600)
- Alfa Romeo Alfetta 1.8 (AR 01608)
- Alfa Romeo Alfetta GT 1.8 (AR 01608)
- Alfa Romeo Berlina 1.8 (AR 01608)
- Alfa Romeo Alfetta 1.8 (AR 01608 X)
- Alfa Romeo Alfetta GT 1.8 (AR 01608 X)
- Alfa Romeo Spider 2.0 (AR 01615)
- Alfa Romeo Alfetta 2.0 (AR 01623)
- Alfa Romeo Alfetta GT 2.0 (AR 01623)