ACL Bearings 4M1149A-.75 Aluglide Standard Main Bearing Set

The ACL Bearings 4M1149A-.75 is a complete standard size main bearing set engineered for precise engine rebuilds and performance applications. These main bearings feature ACL's advanced Aluglide bearing material, which provides exceptional wear resistance, improved load capacity, and superior conformability to crankshaft journals.

Key Features:

• Aluglide bearing material construction for enhanced durability and performance
• Standard size (-.75 designation indicates specific sizing)
• Precision-manufactured to OEM specifications for proper clearances
• High-strength steel backing with tri-metal bearing surface
• Optimized for both street and performance engine applications
• Complete main bearing set for full crankshaft support

ACL bearings are manufactured using advanced materials and processes to ensure consistent quality and reliability. The Aluglide bearing material offers excellent embedability to trap debris particles, protecting the crankshaft from damage. These bearings provide the critical interface between your engine's crankshaft and block, making them essential components for any engine rebuild or performance upgrade.