Main Bearings – M20

Product Description

Complete set of factory replacement main bearings.

COATING OPTION: These main bearings are coated to dramatically increase their durability and useful life. If you’re building a race motor, these are the smart move.

Sold as a 6 cylinder set.

Fitment:

M20 – Early vs. Late main bearings.

Early = ‘e’ blocks/ SINGLE TANG

– Early main bearings have the same upper and lower shells. These shells have an oil groove and a single tang.

Late = ‘i’ blocks/ DOUBLE TANG

– Late main bearings have a different upper and lower shell. The upper shell has an oil groove and a single tang, the lower shell has a smooth face with two tangs.

**Bear in mind that some early ‘i’ engines were also equipped with the single-tangs. Before ordering main bearings you need to confirm which style bearing you need.

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Potential issue and solution

The EARLY STYLE ‘e’ .25-UNDER & .50-UNDER BEARINGS are no longer available. All other bearing sets are still available at this time.

Compatibility/Solutions?

-You CANNOT simply retrofit a late bearing set into an early block.

The BEST solution for the individual seeking NLA undersize single-tang bearings for their M20 ‘e’ block, is to purchase 2 sets of late ‘i’ bearings and simply pair up the halves that have the oiling-groove in them.

Which M20 Compatible crank you have (your existing crank or one of our stroker kits), has nothing to do with what style main bearing you need.