ACL Bearings 5M429A-STD Standard Main Bearing Set Small Block Chevy

The ACL Bearings 5M429A-STD is a standard size main bearing set engineered for small journal small block Chevrolet engines. This A-Series bearing set features ACL's proprietary Aluglide bearing material, which has become the standard for OEM replacement applications in modern engine builds.

Key Features:

• Aluglide bimetal construction with aluminum, tin, and silicon composition
• Steel backing provides exceptional strength and durability
• Standard size bearing shells for stock crankshaft journals
• Complete main bearing set for proper crankshaft support
• Excellent anti-seizure, anti-wear, and anti-corrosion properties
• Superior embeddability for contaminant tolerance
• Outstanding load-carrying characteristics for reliable performance

ACL's Aluglide bearings represent a significant advancement in bearing metallurgy, offering the ideal combination of physical properties required for OEM replacement applications. The proprietary aluminum-tin-silicon alloy provides exceptional wear resistance and strength while maintaining the conformability needed for proper bearing function. These bearings meet or exceed original equipment specifications and are trusted by professional engine builders and technicians worldwide.