What is the main function of main bearings in an engine?

Main bearings support the crankshaft within the engine block. They allow the crankshaft to rotate smoothly while handling the significant forces generated during combustion and power delivery.

What does the 'P20' in the part number MS667P20 signify?

The 'P20' in the part number indicates that these bearings are 0.020 inches undersize. This sizing is important for engines that have had their crankshaft journals machined undersize during a rebuild.

What should I do before installing these main bearings?

Before installation, ensure the crankshaft journals and the main bearing bores in the engine block are thoroughly cleaned. Proper lubrication with assembly oil is also critical during installation to prevent damage.

Clevite Engine Main Bearing Set MS667P20

Name: Clevite Main Bearing Set
Brand: Clevite
SKU: clevite-clevite-main-bearing-set-t14-53778
Price: 58.15 USD
Availability: BackOrder

Clevite Main Bearing Set

$58.15

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Clevite Main Bearing Set for engine rebuilding. Fits a range of GM vehicles.

Key Features

Fits a range of GM vehicles from the 1960s and 1970s.
Multi-layer construction with a steel backing for strength.
Bearing material is chosen to handle engine loads and friction.
Steel backing thickness is 0.020 inches.
Part number MS667P20.

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Will this fit your vehicle?

Product Details

If you're rebuilding the bottom end of your engine, getting the main bearings right is crucial for smooth operation and longevity. This Clevite Main Bearing Set, part number MS667P20, is built to help you get that engine back in shape. These bearings sit between the crankshaft and the engine block, supporting the crankshaft as it spins.

Clevite uses a multi-layer construction for these bearings, combining a steel backing for strength with a bearing material designed to handle the loads and friction. The steel backing is 0.020 inches thick, which is a common specification for many engine builds. This set is designed to fit a variety of GM vehicles from the late 1960s and 1970s, including models like the Pontiac Grand Prix and Catalina, as well as the Oldsmobile Toronado.

When you're installing main bearings, proper cleaning of the crankshaft and block surfaces is essential. Make sure to follow the manufacturer's instructions for lubrication and torque specifications to ensure these bearings perform as intended.