What does '0.5 undersize' mean for these bearings?

The '0.5 undersize' designation means these bearings are 0.0005 inches smaller in diameter than a standard-sized bearing. This size is used when the crankshaft journals have been machined down by that amount, typically during an engine rebuild to address wear or damage.

What is the material of these main bearings?

These main bearings are made from a bi-metal aluminum composite. This material is chosen for its performance in medium-load engine applications and is also lead-free, making it an environmentally safer option.

Are these bearings suitable for high-performance or racing engines?

These bearings are described as suitable for medium-load engines. For high-performance or racing applications, it's always best to consult with an engine builder or refer to King Engine Bearings' specialized racing lines to ensure the correct bearing is chosen for the specific demands of your build.

Specifications

Brand: King Engine Bearings
Part #: MB5840SI0.5
UPC: 611500605970

King Chrysler / Dodge Gen 3 Hemi 5.7L / 6.1L / 6.4L (Size 0.5) Crankshaft Main Bearing Set of 5

Name: King Chrysler / Dodge Gen 3 Hemi 5.7L / 6.1L / 6.4L (Size 0.5) Crankshaft Main Bearing Set of 5
Brand: King Engine Bearings
SKU: king-engine-bearings-king-chrysler-dodge-gen-3-hemi-5-7l-6-1l-6-4l-size-0-5-cran-t14-570968
Price: 22.00 USD
Availability: BackOrder

$22.00

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King Chrysler/Dodge Gen 3 Hemi 5.7L/6.1L/6.4L (Size 0.5) Crankshaft Main Bearing Set of 5. Well-built bi-metal aluminum bearings for medium-load engines.

Key Features

Fits Chrysler/Dodge Gen 3 Hemi 5.7L, 6.1L, and 6.4L engines.
This is a set of five crankshaft main bearings.
Bearings are 0.5 undersize, meaning they are 0.0005 inches smaller than standard.
Constructed from a bi-metal aluminum material.
Features a lead-free, environmentally safe composite.
Suitable for medium-load engine applications.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

This is a set of five crankshaft main bearings from King Engine Bearings, specifically sized 0.5 undersize. These bearings are crucial for the health of your Gen 3 Hemi engine, handling the load as the crankshaft spins within the engine block. They are made from a bi-metal aluminum material, which is a lead-free composite suitable for medium-load applications.

King Engine Bearings has been specializing in this area since 1960, aiming to provide reliable components. This set is designed for Chrysler and Dodge vehicles equipped with the 5.7L, 6.1L, or 6.4L Gen 3 Hemi engines. The 0.5 undersize means these bearings are intended for crankshafts that have been machined down by 0.0005 inches, which is common during engine rebuilds to clean up wear or damage.

This set fits a range of popular vehicles, including the Dodge Challenger, Dodge Charger, and Jeep Grand Cherokee. When rebuilding or repairing your Hemi engine, ensuring you have the correct size bearings is key to proper oil clearance and long-term performance.