What does the .010 size mean for these bearings?

The .010 size indicates that these bearings are undersized by ten-thousandths of an inch. This is typically used when the engine's crankshaft has been machined down (ground) during a rebuild to ensure proper clearance and oil film.

What is trimetal construction?

Trimetal construction refers to bearings made with three distinct layers of material. This design is common in performance applications because it offers excellent strength, wear resistance, and the ability to handle high loads and temperatures.

Are these bearings suitable for a stock engine rebuild?

Yes, these bearings are designed as a direct replacement for stock main bearings. The trimetal construction and XP Series design offer improved durability over stock, making them a solid choice for both stock and performance-oriented engine rebuilds.

Specifications

Brand: King Engine Bearings
Part #: MB5381XP010
UPC: 611500537028

King Engine Bearings Holden 253/308CI 5.0L/5.7L (Size .010) Main Bearing Set

Name: King Engine Bearings Holden 253/308CI 5.0L/5.7L (Size .010) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-holden-253-308ci-5-0l-5-7l-size-010-ma-t14-532208
Price: 112.88 USD
Availability: BackOrder

$112.88

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 XP Series main bearing set for Holden 253/308CI 5.0L/5.7L. This .010 undersize set uses a trimetal design for improved durability.

Key Features

Fits Holden 253, 308ci, 5.0L, and 5.7L engines.
This is a .010 inch undersize main bearing set.
Features King's XP Series race bearings.
Utilizes a trimetal construction for improved durability and load capacity.
Designed as a direct replacement for stock main bearings.

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About this part

Product Details

King Engine Bearings is well-known for making solid engine components, especially for performance applications. This main bearing set is built for Holden 253, 308, 5.0L, and 5.7L engines. It's a direct replacement for your stock bearings, but with an updated design for better performance.

This set features King's XP Series race bearings, which use a trimetal construction. This means they have multiple layers of materials to handle the high pressures and heat found in performance engines. The bearings are also .010 inch undersize, which is important if you've had your crankshaft ground down during an engine rebuild. This specific sizing ensures a proper fit and oil clearance for optimal engine function.