What does the 0.75mm undersize mean for my engine rebuild?

The 0.75mm undersize indicates that these bearings are designed for a crankshaft that has been machined down by 0.75mm. This is typically done during an engine rebuild to correct wear or imperfections on the original crankshaft surface.

What is the material of these main bearings?

These bearings are made from a tri-metal material. This construction offers a combination of strength and conformability, which is beneficial for engine bearing performance and longevity.

Are these bearings sold individually or as a set?

This product is a main bearing set, meaning it includes all the necessary main bearings for your Chrysler Pentastar 3.6L V6 engine's crankshaft.

Specifications

Brand: King Engine Bearings
Part #: MB4518SI0.75
UPC: 611500615023

King Engine Bearings Chrysler Pentastar 3.6L Erb V6 (Size +0.75mm) Main Bearing Set

Name: King Engine Bearings Chrysler Pentastar 3.6L Erb V6 (Size +0.75mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-chrysler-pentastar-3-6l-erb-v6-size-0--t14-770397
Price: 113.05 USD
Availability: BackOrder

$113.05

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King Engine Bearings Chrysler Pentastar 3.6L Erb V6 (Size +0.75mm) Main Bearing Set. These bearings are 0.75mm undersize for crankshaft regrinding.

Key Features

Main bearing set for Chrysler Pentastar 3.6L V6 engines.
Features a 0.75mm undersize for use with a reground crankshaft.
Constructed with a tri-metal material for durability and performance.
Designed to help maintain oil film and absorb shock loads.

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About this part

Product Details

These main bearings from King Engine Bearings are built with a high-performance tri-metal material. They are specifically sized at 0.75mm undersize, meaning they are intended for use with a crankshaft that has been machined down by that amount. This is a common practice when rebuilding an engine to ensure a fresh, perfectly round surface for the bearings to run on.

The tri-metal construction offers a good balance of strength and conformability, helping to absorb shock loads and maintain oil film. This is important for the longevity of your Pentastar 3.6L V6 engine, especially if it's seeing regular use or has accumulated significant mileage. King is a well-known name in engine bearings, and this set is a solid option for a rebuild where the crankshaft has been reground.