What does Trimetal construction mean for these bearings?

Trimetal bearings use three layers of different materials to create a strong and durable bearing surface. This construction is known for its ability to handle higher loads and temperatures compared to simpler bearing designs.

What is the purpose of the pMax Black coating?

The pMax Black coating is an updated feature designed to improve oil retention and reduce wear, particularly during engine startup. This helps protect the bearing surface from damage when the engine is first turned over and oil pressure is building.

Do these bearings come with installation instructions?

While these bearings are designed as a direct replacement, it is always recommended to refer to the manufacturer's installation instructions or a qualified mechanic for proper installation procedures and torque specifications.

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Specifications

Brand: King Engine Bearings
Part #: MB5381XP
UPC: 611500537004

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

Name: King Engine Bearings Holden 253/308CI 5.0L/5.7L (Size STD) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-holden-253-308ci-5-0l-5-7l-size-std-ma-t14-532206
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 main bearing set for Holden 5.0L and 5.7L engines. Trimetal race bearings for improved durability.

Key Features

Fits Holden 253, 308ci, 5.0L, and 5.7L engines.
Trimetal construction for improved durability.
Features pMax Black coating for better oil retention and wear resistance.
Standard (STD) size for engines with original crankshaft journal specifications.

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About this part

Product Details

King Engine Bearings is well-known for making solid engine components, and this main bearing set for Holden 253, 308ci, 5.0L, and 5.7L engines is a great example of their work. These are the bearings that support the crankshaft within the engine block, and having a well-built set is crucial for keeping your engine running smoothly and reliably.

This set features Trimetal construction, which is a popular choice for performance and durability. The pMax Black coating is an updated design that helps with oil retention and wear resistance, especially during those critical initial startup moments. Because these are standard size (STD), they are intended for engines where the crankshaft journals are still within their original factory specifications, meaning no machining or grinding was needed.