What does it mean that these bearings are undersize 0.020 inches?

This means the bearings are slightly smaller than the original factory size. They are intended for use when the crankshaft journals have been machined down by 0.020 inches during an engine rebuild to correct wear or damage.

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, allow it to rotate smoothly with minimal friction, and maintain proper oil clearance.

Are these bearings sold individually or as a set?

This product is a main bearing set, meaning it includes all the necessary main bearings to replace the complete set for your engine's crankshaft.

Specifications

Brand: ACL
Part #: 4M7278A-.50

ACL Chrysler Prod. V6 201-232 1990-on Engine Crankshaft Main Bearing Set

Name: ACL Chrysler Prod. V6 201-232 1990-on Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-chrysler-prod-v6-201-232-1990-on-engine-crankshaft-main-bearing-set-t14-631250
Price: 23.35 USD
Availability: BackOrder

$23.35

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Fits 1990-2007 Dodge Caravan. ACL crankshaft main bearing set, undersize 0.020 inch, for V6 201-232 engines.

Key Features

Fits 1990-2007 Dodge Caravan, 1998-2001 Dodge Grand Caravan, and 1993-1997 Dodge Intrepid.
ACL crankshaft main bearing set for Chrysler V6 201-232 engines.
This set is undersize by 0.020 inches (0.50mm), suitable for machined crankshafts.
Supports the crankshaft and reduces friction within the engine block.
Designed for 3.3L V6 OHV engines with VIN codes 3, G, J, L, R, S, T, U.

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About this part

Product Details

ACL has been making engine bearings for decades, and this crankshaft main bearing set for your 1990-2007 Dodge Caravan is one of their staples. These bearings are crucial for keeping your V6 engine running smoothly by supporting the crankshaft and reducing friction. This particular set is designed for engines with a 3.3L displacement and is undersized by 0.020 inches, which is important if your crankshaft has been machined to a smaller diameter during a rebuild.

When you're rebuilding an engine or replacing worn bearings, getting the right size is key. These ACL bearings are well-built to handle the demands of your engine, ensuring proper oil clearance and support for the rotating assembly. They fit a range of Chrysler V6 engines, specifically those with VIN codes 3, G, J, L, R, S, T, or U, commonly found in models like the Caravan, Grand Caravan, and Intrepid from the early 90s through the mid-2000s.

If your crankshaft has been turned or polished down during a previous repair, using an undersize bearing like this 4M7278A-.50 set is essential to maintain the correct oil clearance. Always confirm the exact size needed based on your crankshaft measurements before ordering.