What does '0.010 inch undersize' mean for these bearings?

This means the bearings are designed to fit a crankshaft that has been machined down by 0.010 inches from its original factory size. This is common when a crankshaft is reconditioned after wear or damage.

What is the 'SI' material mentioned?

The 'SI' designation refers to King's specialized bearing material. It's a high-performance overlay known for its good embeddability and conformability, which helps protect the bearing and crankshaft journal.

What is the primary function of main bearings?

Main bearings support the crankshaft within the engine block. They create a low-friction interface that allows the crankshaft to rotate smoothly while handling the immense forces generated during combustion.

King Engine Bearings LS-Series Main Bearing Set MB5875SI010

Name: King Engine Bearings GM Vortex / Gen III LS-Series Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-gm-vortex-gen-iii-ls-series-main-beari-t14-888572
Price: 96.97 USD
Availability: InStock

King Engine Bearings GM Vortex / Gen III LS-Series Main Bearing Set

$96.97

Only 1 left in stock

King Engine Bearings LS-Series Main Bearing Set MB5875SI010. This 0.010 inch undersize set is for GM Vortex Gen III LS-series engines.

Key Features

Fits GM Vortex and Gen III LS-series engines.
This is a 0.010 inch undersize main bearing set.
Features King's 'SI' material, a high-performance overlay for improved embeddability and conformability.
Designed to provide a low-friction surface for the crankshaft.

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Product Details

This is a King Engine Bearings main bearing set, part number MB5875SI010, specifically made for GM Vortex and Gen III LS-series engines. These bearings are crucial for the health of your engine's rotating assembly, providing a smooth, low-friction surface for the crankshaft to spin within the engine block. If you're rebuilding or refreshing an LS engine, especially if the crankshaft has been machined undersize, this set is what you'll need.

This particular set is 0.010 inches undersize, meaning it's designed to be used with a crankshaft that has been ground down by 0.010 inches. King Engine Bearings is known for making well-built engine bearings, and this set uses their specialized 'SI' material, which is a high-performance overlay that offers good embeddability and conformability. This helps to protect the crankshaft journal and the bearing itself, especially in high-performance applications where oil pressure and load can be significant.

When installing these bearings, it's important to ensure the crankshaft journals are clean and within the specified undersize tolerance. Always refer to your engine's service manual for proper installation procedures and torque specifications.