What is the main purpose of main bearings?

Main bearings sit between the crankshaft and the engine block. Their primary job is to support the crankshaft, allowing it to rotate smoothly while minimizing friction and wear.

Do I need any special tools to install these bearings?

While installation requires engine disassembly, the bearings themselves are typically installed by hand or with a specialized bearing installer tool. Always refer to the manufacturer's installation instructions for specific tool requirements and procedures.

What is the difference between main bearings and rod bearings?

Main bearings support the crankshaft's main journals, which run the length of the engine block. Rod bearings, on the other hand, connect the connecting rods to the crankshaft's crankpins, transferring combustion forces to the crankshaft.

Clevite Main Bearing Set MS979A - Ford 240 250 300 6 Cyl

Name: Clevite Ford Pass & Trk 240 250 300 6 Cyl 1966-93 Main Bearing Set
Brand: Clevite
Price: 62.78 USD
Availability: InStock

Clevite Ford Pass & Trk 240 250 300 6 Cyl 1966-93 Main Bearing Set

$62.78

On Backorder

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Clevite Ford Pass & Trk 240 250 300 6 Cyl 1966-93 Main Bearing Set. Essential for engine rebuilds, ensuring proper crankshaft support.

Key Features

Fits Ford 240, 250, and 300 cubic inch 6-cylinder engines from 1966-1993.
Includes the main bearings necessary for crankshaft support.
Designed to reduce friction and wear between the crankshaft and engine block.
Well-built to withstand engine operating conditions.
Essential component for engine rebuilds and repairs.

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Will this fit your vehicle?

Product Details

This is a Clevite Main Bearing Set, part number MS979A. What you get in this box are the main bearings needed to support the crankshaft in your Ford 240, 250, or 300 cubic inch inline-six engine. These bearings are crucial for keeping the crankshaft spinning smoothly and centered within the engine block, reducing friction and wear.

When you're rebuilding an engine, especially one from the 1966 to 1993 model years, using well-built bearings like these from Clevite is a smart move. They are designed to handle the pressures and temperatures inside the engine, helping to ensure a long life for your rebuilt motor. Proper installation is key here; make sure your crankshaft journals are clean and within spec, and always use a quality assembly lube to protect the bearings during initial startup.

This set fits a wide range of Ford trucks and vans from that era, including popular models like the F-150, E-150 Econoline, and Bronco. It's a solid option for anyone undertaking a major engine overhaul or repair.