What is the main function of crankshaft main bearings?

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

Are these bearings a direct replacement for the original parts?

Yes, this set is manufactured to standard size (STD), meaning it is intended to replace the original equipment bearings directly, assuming the crankshaft journals are in good condition and within factory specifications.

What should I check before installing these main bearings?

Before installation, it's important to ensure the crankshaft journals are clean, smooth, and within the manufacturer's specified diameter and finish. You should also verify that the bearing bores in the engine block are clean and free of debris.

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Trusted Since 1957

Est. 1957

ACL Ford Prod. V8 351M-351W 1969-76 Engine Crankshaft Main Bearing Set

Specifications

Brand: ACL
Part #: 5M981A-STD

ACL Ford Prod. V8 351M-351W 1969-76 Engine Crankshaft Main Bearing Set

Name: ACL Ford Prod. V8 351M-351W 1969-76 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-ford-prod-v8-351m-351w-1969-76-engine-crankshaft-main-bearing-set-t14-630719
Price: 40.81 USD
Availability: BackOrder

$40.81

On Backorder

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

Fits 1969-1974 Ford Country Sedan. ACL crankshaft main bearing set for V8 351M-351W engines. Ensures proper crankshaft support.

Key Features

Fits 1969-1974 Ford Country Sedan.
Designed for Ford V8 351M and 351W engines.
Standard size (STD) crankshaft main bearing set.
From ACL, a well-known manufacturer of engine bearings.

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Fits this vehicle

Ford Country Sedan 1969-1974

Product Details

You get a full set of main bearings in this kit, which means one box handles the crankshaft bearing replacement. These bearings are crucial for supporting the crankshaft and ensuring it spins smoothly within the engine block. For your 1969-1974 Ford Country Sedan with a 351M or 351W V8 engine, getting the right bearings is key to a healthy engine rebuild or repair.

ACL has been making engine bearings for a long time, and this set is built to meet the needs of your classic Ford. They're made to the standard size, so they'll fit precisely where the original bearings were. Proper installation is important here; make sure the crankshaft journals are clean and within spec before you put these in. Getting the clearances right is what keeps your engine running strong for miles to come.