Sealed Power 5078M Engine Crankshaft Main Bearing Set

Sealed Power Engine Crankshaft Main Bearing Set Overview

The Sealed Power 5078M engine crankshaft main bearing set is designed as an OE replacement for Ford small block 351w engines from 1977 to 1998. This main set is engineered to meet the specifications required for reliable performance in various Ford, Lincoln, and Mercury vehicles.

• OE replacement main bearing set for 1977-1998 Ford 351w small block engines
• Constructed from overplated copper-lead alloy for durability and wear resistance
• Includes standard and undersized bearings: Std, -1, -10, -20, -30, -40
• Compatible with multiple Ford, Lincoln, and Mercury models including Bronco, F-150, and Thunderbird
• Part number 5078M ensures correct fit and performance

Detailed Product Description

The Sealed Power 5078M main bearing set is manufactured specifically for Ford’s small block 351w engine family. Made from an overplated copper-lead alloy, these bearings provide a balance of strength and wear resistance necessary for maintaining proper crankshaft alignment and smooth engine operation. The set includes a range of sizes from standard to various undersizes (-1 to -40), allowing for precise fitment during engine rebuilds or repairs. This main set is compatible with a wide range of Ford, Lincoln, and Mercury vehicles, including popular models such as the Bronco, F-150, E-150 Econoline, and Thunderbird, covering production years from 1977 through 1998.

Applications and Problem Solving

• Replaces worn or damaged main bearings in Ford 351w small block engines
• Addresses crankshaft end play and bearing clearance issues
• Helps reduce engine noise caused by bearing wear
• Restores proper oil clearance to prevent premature engine wear
• Supports engine rebuilds for Ford, Lincoln, and Mercury vehicles from 1977-1998

Installation Notes and Tips

When installing the Sealed Power 5078M main bearing set, ensure the crankshaft journals are clean and free of debris. Measure bearing clearances carefully using plastigage or a micrometer to select the correct bearing size from the included range. Proper lubrication during installation is critical to prevent initial wear. Follow manufacturer torque specifications for main bearing caps to maintain engine integrity.

Quality Assurance and Warranty

Sealed Power bearings are manufactured to meet OEM standards for material composition and dimensional accuracy. The overplated copper-lead alloy construction provides consistent performance under normal operating conditions. While specific warranty details are not provided, Sealed Power products are generally backed by quality control processes to ensure reliability in engine rebuild applications.