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 with minimal friction and wear. They are essential for the engine's overall operation and longevity.

Are these bearings undersized or oversized?

This is a standard size bearing set. It is designed to be installed on a crankshaft that is within factory specifications. If your crankshaft has been machined, you would need to order a specific undersize or oversize bearing set.

What else might I need when replacing main bearings?

When replacing main bearings, it's common practice to also inspect and potentially replace rod bearings, piston rings, and engine seals. You will also need assembly lubricant to coat the bearings and crankshaft journals before installation, and always refer to your service manual for proper torque specifications.

Specifications

Brand: ACL
Part #: 4M1822A-20

ACL Buick V6 204-231 1990-93 Engine Crankshaft Main Bearing Set

Name: ACL Buick V6 204-231 1990-93 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-buick-v6-204-231-1990-93-engine-crankshaft-main-bearing-set-t14-631008
Price: 18.32 USD
Availability: BackOrder

$18.32

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ACL Engine Crankshaft Main Bearing Set for Buick V6 3.8L engines (1990-93). Ensures smooth crankshaft rotation.

Key Features

Fits Buick LeSabre (1988-1991), Park Avenue (1991-1994), Regal (1990-1993), Riviera (1991-1993), Oldsmobile 98 (1992-1995), and Pontiac Bonneville (1988-1991).
Designed for Buick 3.8L V6 engines with VIN codes 1, C, or L.
Specifically for Type L engines (1990-93), Type 1 engines (1992-93), and Type C engines (1991).
Supports the crankshaft, allowing for smooth rotation within the engine block.
Helps reduce friction and wear on the crankshaft.

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Will this fit your vehicle?

About this part

Product Details

ACL offers this crankshaft main bearing set for your Buick V6 3.8L engine. These bearings are crucial for supporting the crankshaft and allowing it to spin smoothly within the engine block. When it's time to rebuild or refresh your engine, especially if you're dealing with the 3800 3.8L VIN 1, C, or L engines from 1990-1993, a fresh set of main bearings is a key component for proper engine function.

This set is built to meet the original specifications for your engine, ensuring a proper fit and reliable performance. ACL has been making engine bearings for a long time, and they understand the demands placed on these parts. Installing a new set of main bearings helps reduce friction and wear on your crankshaft, which is essential for the longevity and health of your engine. If you're already deep into an engine overhaul, this bearing set is a necessary part of getting everything back together correctly.

This particular set is designed for specific engine types and model years, so be sure to check the fitment details to confirm it matches your vehicle. Proper installation is key, so always refer to your vehicle's service manual for the correct procedures and torque specifications.