What does the 0.5mm undersize mean for my engine rebuild?

The 0.5mm undersize indicates that these bearings are slightly smaller than standard size. This is typically used when the crankshaft journals have been machined down by 0.5mm to correct wear or damage. Using the correct undersize bearing ensures proper oil clearance and a snug fit on the crankshaft.

Are these bearings suitable for high-performance or racing applications?

These bearings are described as ideal for medium-load engines. While they are well-built, for extreme high-load or racing applications, you may want to consult King Engine Bearings' performance line to ensure the best match for your specific engine build.

What is the benefit of bi-metal aluminum material in engine bearings?

Bi-metal aluminum bearings combine the strength and wear resistance of aluminum alloys with the bearing properties of other materials. This construction offers good load-carrying capacity and thermal conductivity, making them a popular choice for many engine applications.

Specifications

Brand: King Engine Bearings
Part #: CR4125SI0.5
UPC: 611500536298

King Subaru EJ15/EJ16/EJ18/EJ20/EJ22/EJ25 (Size 0.5mm) Silicone Bi-Metal Alum Rod Bearing Set

Name: King Subaru EJ15/EJ16/EJ18/EJ20/EJ22/EJ25 (Size 0.5mm) Silicone Bi-Metal Alum Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-subaru-ej15-ej16-ej18-ej20-ej22-ej25-size-0-5mm-silico-t14-666712
Price: 26.83 USD
Availability: BackOrder

$26.83

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King Subaru EJ15/EJ16/EJ18/EJ20/EJ22/EJ25 (Size 0.5mm) Silicone Bi-Metal Alum Rod Bearing Set. Engine bearings for medium-load engines.

Key Features

Fits 1990-2012 Subaru Legacy, 1998-2010 Subaru Forester, 1995-2011 Subaru Impreza, 2000-2012 Subaru Outback, 2003-2006 Subaru Baja, and 2005-2006 Saab 9-2X.
This is a 0.5mm undersize connecting rod bearing set.
Features a bi-metal aluminum construction suitable for medium-load engines.
Includes a lead-free composite material for environmentally safe operation.
Designed for Subaru EJ20, EJ22, and EJ25 engines, including turbocharged variants.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

If you're rebuilding the engine in your Subaru or Saab, getting the connecting rod bearings right is crucial for smooth operation and longevity. This set from King Engine Bearings is specifically made for Subaru EJ engines, including turbocharged models, and is sized 0.5mm undersize to help achieve proper clearances during your rebuild. King has been specializing in bearings since 1960, focusing on supplying well-built components for engine builds.

These bearings use a bi-metal aluminum material, which is a solid choice for medium-load engines. They also feature a lead-free composite, making them an environmentally safe option. The 0.5mm undersize sizing is important for engines that may have had their crankshaft journals machined during a previous rebuild or repair. Ensuring the correct bearing size is key to maintaining proper oil clearance, which is vital for lubrication and preventing wear.