Sealed Power 4664M Engine Crankshaft Main Bearing Set

Overview of Sealed Power 4664M Main Bearing Set

The Sealed Power 4664M engine crankshaft main bearing set is designed as an OE replacement for Buick V8 engines with a 455 displacement. This main set is engineered to meet the specifications required for reliable engine performance in Buick models such as Century, LeSabre, Regal, Riviera, and Skylark.

• OE replacement main bearing set for Buick 455 V8 engines
• Constructed from overplated copper-lead alloy for durability
• Includes standard and undersized bearings: Std, 10, 20, 30
• Compatible with Buick models Century, LeSabre, Regal, Riviera, Skylark
• Part number 4664M ensures precise fit and performance

Technical Details and Material Composition

The 4664M main bearing set is manufactured using an overplated copper-lead alloy, a material known for its strength and wear resistance under high load conditions. This set includes bearings in standard size as well as undersized increments of 10, 20, and 30, allowing for precise fitting during engine rebuilds or repairs. Designed specifically for Buick’s 455 cubic inch V8 engine family, this main set supports the crankshaft by reducing friction and maintaining proper alignment within the cylinder block.

Compatible Buick Models and Engine Applications

This main bearing set is compatible with several Buick models equipped with the 455 V8 engine, including the Century, LeSabre, Regal, Riviera, and Skylark. It is intended for use as an OE replacement part, ensuring that engine rebuilds maintain factory specifications and performance standards. The part number 4664M corresponds directly to these applications, providing a reliable option for engine maintenance and overhaul.

Common Engine Issues Addressed by This Bearing Set

• Excessive crankshaft end play or movement
• Wear or scoring on main bearing surfaces
• Engine knocking or unusual noise from main bearings
• Oil pressure loss related to bearing clearance
• Overheating or premature bearing failure due to material fatigue

Installation Notes and Recommendations

When installing the Sealed Power 4664M main bearing set, ensure that the crankshaft journals are properly measured and matched to the correct bearing size (standard or undersized). Clean all components thoroughly to remove debris and old lubricant. Use proper torque specifications for main bearing caps to maintain correct bearing clearance and alignment. It is recommended to inspect the crankshaft for wear or damage before installation to ensure optimal performance.

Quality Assurance and Warranty Information

Sealed Power manufactures the 4664M main bearing set to meet OEM standards for durability and fitment. The use of overplated copper-lead alloy provides consistent wear resistance and longevity. While specific warranty details are not provided here, Sealed Power products typically come with manufacturer-backed quality assurance to support engine rebuild reliability.