What specific engine codes does this bearing set fit?

This ACL main bearing set is designed for 3.8L V6 engines with Type L (1990-1993), Type 1 (1992-1993), and Type C (1991) engine codes. Always verify your engine's VIN code to ensure compatibility.

What is the main function of crankshaft main bearings?

Crankshaft main bearings are crucial components that sit between the crankshaft and the engine block. They support the rotating crankshaft, reduce friction, and maintain proper oil clearance for smooth engine operation and longevity.

Are these bearings undersized or oversized?

This ACL main bearing set, part number 4M1822P-40, is a standard size bearing. If your crankshaft has been machined, you will need to order the appropriate undersize bearings.

Specifications

Brand: ACL
Part #: 4M1822P-40

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-t14-632135
Price: 12.12 USD
Availability: BackOrder

$12.12

On Backorder

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Fits 1992-2003 Pontiac Bonneville. ACL 3.8L V6 crankshaft main bearing set for engine rebuilds.

Key Features

Fits 1992-2003 Pontiac Bonneville, 1992-1995 Buick LeSabre, 1997-2004 Buick Regal, 1988-1990 Buick Riviera, and 2004-2005 Chevrolet Monte Carlo.
Designed for 3.8L V6 engines with Type L (1990-93), Type 1 (1992-93), and Type C (1991) engine codes.
ACL is a well-known manufacturer of engine bearings.
Main bearings support the crankshaft within the engine block.
Built to precise tolerances for proper oil clearance and engine longevity.

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About this part

Product Details

Already rebuilt the top end of your 3.8L V6? This ACL crankshaft main bearing set is the next piece of the puzzle for a complete engine overhaul. These bearings sit between the crankshaft and the engine block, supporting the rotating assembly and ensuring smooth operation. If you're digging into the bottom end of your 1992-2003 Pontiac Bonneville, or other compatible GM vehicles from the early to mid-90s, this set is designed to fit your Type L, C, or 1 engines.

ACL has been making engine bearings for a long time, and this set is well-built to handle the stresses of daily driving and beyond. They're made to precise tolerances, which is critical for proper oil clearance and long engine life. Getting the oil clearance just right is key to preventing premature wear, and these bearings are a solid option for getting that done. When you're putting an engine back together, using a reputable bearing set like this helps ensure you won't have to pull it apart again anytime soon.

This set includes the main bearings needed for your engine rebuild. Make sure to check your specific engine code (VIN 1, C, or L) to confirm fitment for your year and model. Always refer to your vehicle's service manual for the correct installation procedures and torque specifications.