What does '+0.020 inch undersize' mean for these bearings?

This means the bearings are manufactured to be 0.020 inches smaller in diameter than standard size. They are used when the engine's crankshaft journals have been machined down by 0.020 inches to correct for wear or damage.

What is the CP material overlay?

The CP material is a high-performance overlay developed by King Engine Bearings. It's known for its durability and ability to handle the pressures and temperatures found in an engine, working well with different oil types.

Do these bearings come with installation instructions?

While this set includes the main bearings, it's recommended to consult your vehicle's official service manual for detailed installation procedures, including proper oil clearance checks and torque specifications.

Specifications

Brand: King Engine Bearings
Part #: MB638CP020
UPC: 611500621628

King Engine Bearings General Motors L52 Vortec 3.5L (Size +0.020) Main Bearing Set

Name: King Engine Bearings General Motors L52 Vortec 3.5L (Size +0.020) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-general-motors-l52-vortec-3-5l-size-0--t14-432582
Price: 189.99 USD
Availability: BackOrder

$189.99

On Backorder

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

King Engine Bearings Main Bearing Set MB638CP020 for General Motors L52 Vortec 3.5L engines. This is a +0.020 inch undersize set.

Key Features

This is a main bearing set for General Motors L52 Vortec 3.5L engines.
The bearings are sized at +0.020 inches undersize, intended for use with a machined crankshaft.
Features King's CP material overlay for improved durability and oil compatibility.
Helps maintain proper oil clearance for smooth crankshaft rotation.

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

In this set, you get the main bearings for your General Motors L52 Vortec 3.5L engine, specifically sized at +0.020 inches undersize. These bearings are crucial for the smooth rotation of your engine's crankshaft within the engine block. They create a thin film of oil that separates the rotating metal surfaces, preventing direct contact and wear.

King Engine Bearings uses a high-performance overlay material on these bearings, which is known for its durability and ability to withstand the pressures inside an engine. The CP material is designed to work well with various oil types and provides a solid foundation for engine longevity. Because these are a +0.020 inch undersize set, they are intended for use when the crankshaft journals have been machined down by 0.020 inches to correct for wear or damage.

When rebuilding or repairing your L52 Vortec engine, using bearings that are precisely sized and made from reliable materials is important for ensuring proper oil clearance and reducing friction. Always refer to your vehicle's service manual for the correct installation procedures and torque specifications.