What does '.25 Oversize' mean for these bearings?

This means the bearings are manufactured to be 0.25mm smaller in diameter than a standard bearing. They are intended for use with a crankshaft that has been machined down by 0.25mm to achieve precise oil clearances for performance applications.

What is the ACL Race Series construction?

The Race Series bearings utilize a tri-metal overlay. This construction is known for its strength and ability to embed small debris, making it well-suited for the higher loads and temperatures found in performance engines.

Do these bearings come with installation instructions?

While specific installation instructions are not included, it is crucial to follow the manufacturer's service manual for your vehicle or consult with a professional engine builder. Proper installation, including torque specifications and oil clearances, is critical for engine health.

Specifications

Brand: ACL
Part #: 5M2220H-.25
UPC: 9315726186381

ACL 03+ Chrysler 345 5.7L Hemi V8 .25 Oversized Race Series High Performance Main Bearing Set

Name: ACL 03+ Chrysler 345 5.7L Hemi V8 .25 Oversized Race Series High Performance Main Bearing Set
Brand: ACL
SKU: acl-acl-03-chrysler-345-5-7l-hemi-v8-25-oversized-race-series-high-performance-m-t14-279007
Price: 121.96 USD
Availability: BackOrder

$121.96

On Backorder

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

ACL .25mm undersize main bearing set for Chrysler 345 5.7L Hemi V8 engines. For performance builds.

Key Features

Fits 2003-2008 Chrysler 345 5.7L Hemi V8 engines.
Fits 2005-2008 ESF 6.1L Hemi V8 engines.
Main bearing set is .25mm (0.010 inches) undersize.
Race Series bearings feature a tri-metal overlay for high load capacity.
Designed for performance engine builds with a machined crankshaft.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

About this part

Product Details

Already running headers and a performance cam on your 5.7L Hemi? This ACL Race Series main bearing set is the next piece of the puzzle to ensure your bottom end can handle the extra power. These bearings are .25mm (which is 0.010 inches) undersize, meaning they're designed to be used with a crankshaft that has been machined to match. This is a common practice in performance engine builds to achieve precise clearances and ensure proper oil film thickness.

ACL has been making engine bearings for a long time, and this Race Series set is built for demanding applications. They use a tri-metal overlay material that offers excellent strength and embeddability, which helps them handle higher loads and temperatures found in performance engines. The .25mm undersize is a specific machining size, so make sure your crankshaft has been prepped for it before ordering. This set is designed to fit a wide range of Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 5.7L Hemi V8, as well as the 6.1L Hemi in certain years.

When you're building a performance Hemi, getting the bearing clearances just right is critical for engine longevity and power. This ACL set gives you the specific size needed for a performance build where the crankshaft has been machined. Always refer to your engine builder's specifications for proper installation and torque procedures.