What is the main purpose of crankshaft main bearings?

Crankshaft main bearings sit between the crankshaft and the engine block, supporting the crankshaft as it spins. They are critical for maintaining the correct oil clearance, which allows for lubrication and prevents metal-on-metal contact, ensuring smooth engine operation and longevity.

What does 'tri-metal construction' mean for these bearings?

Tri-metal construction refers to a bearing layer made of three different metals, typically a steel backing, a bronze-nickel intermediate layer, and a soft overlay like babbitt. This design provides a strong foundation with excellent wear resistance and conformability to the crankshaft journal.

Are these bearings a direct replacement for all Chrysler 318 engines?

This ACL 5M1344A-20 bearing set is designed for Chrysler 318 V8 engines produced between 1974 and 1998. While it fits many applications, it's always best to confirm compatibility with your specific vehicle's original equipment part number or consult a service manual.

Specifications

Brand: ACL
Part #: 5M1344A-20

ACL Chrysler Prod. V8 318 1974-98 Engine Crankshaft Main Bearing Set

Name: ACL Chrysler Prod. V8 318 1974-98 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-chrysler-prod-v8-318-1974-98-engine-crankshaft-main-bearing-set-t14-631521
Price: 36.08 USD
Availability: BackOrder

$36.08

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

ACL Chrysler Prod. V8 318 Engine Crankshaft Main Bearing Set 5M1344A-20. Direct fit for many Dodge and Plymouth V8 models.

Key Features

Fits Dodge Charger, Dodge D150, Dodge Dakota, Dodge Durango, Dodge Ram 1500, and Plymouth Fury.
Designed for Chrysler 318 V8 engines from 1974-1998.
Tri-metal construction offers a strong and durable bearing surface.
Manufactured to precise tolerances for proper oil clearance.
Helps ensure proper crankshaft support and smooth engine operation.

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About this part

Product Details

200,000 psi tensile strength puts these ACL main bearings well above stock hardware. When you're rebuilding a Chrysler V8 engine, especially the 318 cubic inch displacement, using a well-built main bearing set like this ACL 5M1344A-20 is crucial for ensuring proper crankshaft support and oil clearance. These bearings are designed to handle the stresses of daily driving and performance applications, helping to keep your engine running smoothly for miles to come.

ACL has been making engine bearings for a long time, and they know what it takes to make them last. This set is made with a tri-metal construction, which is a popular choice for performance and heavy-duty applications because it offers a good balance of strength, conformability, and embeddability. This means the bearing can adapt to minor imperfections in the crankshaft journal while still providing solid support and resisting wear. Proper oil clearance is key, and these bearings are manufactured to precise tolerances to help you achieve that critical gap between the crank and the block.

This set is designed to fit a wide range of Chrysler V8 engines from 1974 through 1998, covering popular models like the Dodge Charger, Ram 1500, and Dakota, as well as the Plymouth Fury. Make sure to check the full fitment list to confirm compatibility with your specific vehicle. When installing, always refer to your vehicle's service manual for the correct torque specifications and assembly procedures to ensure optimal performance and longevity.