What is the main function of crankshaft main bearings?

Main bearings support the crankshaft within the engine block, allowing it to rotate smoothly. They maintain proper oil clearance between the crankshaft and the block, which is essential for lubrication and preventing excessive wear.

What engine displacements are covered by this bearing set?

This ACL main bearing set is designed for Buick V6 engines with 181, 196, 231, and 252 cubic inch displacements. It covers a wide range of model years from 1964 to 1990.

Do I need to measure my crankshaft before installing these bearings?

Yes, it is highly recommended. Before installing new main bearings, the crankshaft should be professionally inspected for straightness, wear, and measured to ensure it is within the manufacturer's specifications for proper oil clearance.

Specifications

Brand: ACL
Part #: 4M960A-10

ACL Buick V6 181-196-231-252 1964-90 Engine Crankshaft Main Bearing Set

Name: ACL Buick V6 181-196-231-252 1964-90 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-buick-v6-181-196-231-252-1964-90-engine-crankshaft-main-bearing-set-t14-631498
Price: 27.03 USD
Availability: BackOrder

$27.03

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Fits 1975-1977 Buick Regal. ACL main bearing set for Buick V6 engines (1964-90) and Jeep (1966-67). Restores proper crankshaft support.

Key Features

Fits 1975-1977 Buick Regal.
Designed for Buick V6 engines from 1964-1990, including 181, 196, 231, and 252ci displacements.
Also fits 1966-1967 Jeep Jeepster.
Restores proper crankshaft support and oil clearance.
Meets original equipment specifications for a precise fit.
Well-built for reliable engine performance.

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About this part

Product Details

Worn-out main bearings can cause excessive crankshaft movement, leading to low oil pressure and potential engine damage. This ACL main bearing set is designed to restore proper support for your Buick V6 engine's crankshaft, helping to ensure smooth operation and longevity.

This set is specifically built for a range of Buick V6 engines, including the 181, 196, 231, and 252 cubic inch displacements, covering model years from 1964 all the way up to 1990. It also fits the 1966-1967 Jeep Jeepster. The bearings are manufactured to meet the original specifications for your engine, ensuring a precise fit and reliable performance. ACL has been a well-known name in engine bearings for a long time, and this set reflects their focus on producing durable components.

When replacing main bearings, it's crucial to have the crankshaft professionally measured and inspected for straightness and wear. Always refer to your vehicle's service manual for the correct installation procedures and torque specifications.