Sealed Power 4040M Engine Crankshaft Main Bearing Set

Sealed Power 4040M Engine Crankshaft Main Bearing Set Overview

The Sealed Power 4040M engine crankshaft main bearing set is designed as an OE replacement for Pontiac V8 engines with displacements of 350, 389, and 400 cubic inches. This main set is engineered to meet the demands of Buick, Oldsmobile, and Pontiac vehicles, including models like the Firebird, Grand Prix, and LeSabre.

• OE replacement main bearing set for Pontiac V8 engines
• Compatible with 350, 389, and 400 cubic inch displacements
• Constructed from overplated copper-lead alloy for durability
• Includes standard and undersized bearings: Std, -1, -10, -20, -30
• Fits Buick, Oldsmobile, and Pontiac models such as Bonneville, Catalina, and GTO

Product Details and Specifications

The 4040M main bearing set from Sealed Power is manufactured using an overplated copper-lead alloy, providing reliable wear resistance and consistent performance under engine operating conditions. This set includes a range of bearing sizes—standard, minus 0.001, 0.010, 0.020, and 0.030 inches—to accommodate various crankshaft journal dimensions and ensure precise fitment. Designed specifically for Pontiac V8 engines, this main set supports engine displacements of 350, 389, and 400 cubic inches, making it suitable for a variety of classic and performance applications.

Compatible Vehicles and Applications

This engine crankshaft main bearing set is compatible with multiple Buick, Oldsmobile, and Pontiac models. It is suitable for use in vehicles such as the Pontiac Firebird, Grand Am, Grand Prix, GTO, and LeMans, as well as Buick models like the LeSabre and Oldsmobile models including the Delta 88 and Custom Cruiser. The 4040M is intended for OE replacement applications, ensuring proper fit and function in these V8 engines.

• Resolves bearing wear and clearance issues in Pontiac V8 engines
• Addresses crankshaft end play and journal scoring problems
• Helps restore proper oil clearance for improved engine longevity
• Replaces damaged or worn main bearings to reduce engine noise
• Supports engine rebuilds and maintenance for Buick, Oldsmobile, and Pontiac vehicles

Installation Notes and Tips

When installing the Sealed Power 4040M main bearing set, ensure that the crankshaft journals are properly measured to select the correct bearing size from the included range. Clean all bearing surfaces and engine components thoroughly before installation to prevent contamination. Follow manufacturer torque specifications for main bearing caps and verify crankshaft end play after assembly. Proper lubrication during installation is critical to prevent initial wear.

Quality Assurance and Warranty

Sealed Power manufactures the 4040M main bearing set to meet or exceed OEM standards for material composition and dimensional accuracy. The overplated copper-lead alloy construction provides consistent performance and durability. While specific warranty details may vary, Sealed Power products typically come with a limited warranty against manufacturing defects, ensuring confidence in the product's quality and reliability.