What does the 0.25mm undersize mean for these bearings?

The 0.25mm undersize specification means these bearings are designed to fit crankshaft journals that have been machined down by 0.25mm. This is common during engine rebuilds when the crankshaft needs to be resurfaced due to wear.

What material are these bearings made from?

These bearings are constructed from a tri-metal material. This type of bearing offers a good balance of strength, conformability, and embeddability for reliable engine performance.

Are these bearings suitable for a stock engine rebuild?

Yes, these bearings are a well-built option for both stock and performance-oriented Subaru EJ engines. Their tri-metal construction and specific sizing make them a solid choice for engine builders.

Specifications

Brand: King Engine Bearings
Part #: CR4125MC0.25
UPC: 611500619090

King Engine Bearings Subaru EJ20/EJ22/EJ25 (Incl. Turbo) (Size 0.25) Connecting Rod Bearing Set

Name: King Engine Bearings Subaru EJ20/EJ22/EJ25 (Incl. Turbo) (Size 0.25) Connecting Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-subaru-ej20-ej22-ej25-incl-turbo-size--t14-432224
Price: 53.62 USD
Availability: BackOrder

$53.62

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Key Features

This is a set of connecting rod bearings for Subaru EJ20, EJ22, and EJ25 engines.
Includes turbocharged models.
Bearings are 0.25mm undersize for use with machined crankshafts.
Constructed with a tri-metal material for improved durability and performance.
Designed to manage oil flow and reduce friction.

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About this part

Product Details

Built with a high-performance tri-metal material, these King Engine Bearings are designed for Subaru EJ20, EJ22, and EJ25 engines, including turbocharged variants. This set is specifically sized at 0.25mm undersize, making them suitable for crankshafts that have been machined to match this specification during an engine rebuild. They are a well-built option for anyone looking to restore or enhance their Subaru's engine internals.

The tri-metal construction offers improved strength and durability compared to standard bearings, helping to manage oil flow and reduce friction under demanding conditions. This is crucial for maintaining proper lubrication and preventing premature wear, especially in performance-oriented or high-mileage engines. King Engine Bearings are a popular choice for engine builders who need reliable components for their builds.

This set includes the connecting rod bearings needed for your Subaru engine. Always ensure your crankshaft journals are properly measured and machined to the correct undersize before installing these bearings to guarantee optimal performance and longevity.