What does the '+0.50mm' size mean for these bearings?

The '+0.50mm' indicates that these bearings are oversized by half a millimeter. This is typically used when the crankshaft journals have been machined down by 0.50mm during an engine rebuild to remove imperfections or wear.

Are these bearings suitable for high-performance or heavy-duty use?

These bearings are specifically noted as being ideal for medium-load engines. For extreme performance or heavy-duty applications, it's always best to consult with King Engine Bearings' specific product lines designed for those purposes.

What is the material composition of these bearings?

These bearings are made from a bi-metal aluminum material. They also feature a lead-free composite, which is noted as being environmentally safe.

Specifications

Brand: King Engine Bearings
Part #: MB4526SI0.5
UPC: 611500582110

King Engine Bearings Toyota 1GR-FE (Size +0.50mm) Crankshaft Main Bearing Set

Name: King Engine Bearings Toyota 1GR-FE (Size +0.50mm) Crankshaft Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-toyota-1gr-fe-size-0-50mm-crankshaft-m-t14-133642
Price: 44.89 USD
Availability: BackOrder

$44.89

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Fits 2003-2022 Toyota 4Runner. King Engine Bearings Toyota 1GR-FE Crankshaft Main Bearing Set (+0.50mm). Well-built bearings for medium-load engines.

Key Features

Fits 2003-2022 Toyota 4Runner, 2007-2014 FJ Cruiser, 2005-2015 Tacoma, and 2005-2014 Tundra.
This set is 0.50mm oversized for use with a machined crankshaft.
Constructed from a bi-metal aluminum material.
Designed for medium-load engines.
Features a lead-free, environmentally safe composite.

⚠️ 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 bottom end of your 1GR-FE engine, especially for a 2003-2022 Toyota 4Runner, getting the crankshaft main bearings right is crucial. These bearings from King Engine Bearings are a well-built option designed for medium-load applications. They are made from a bi-metal aluminum material that offers good performance for many common engine builds.

King Engine Bearings has been specializing in this exact component since 1960, focusing on supplying dependable parts. This particular set is 0.50mm oversized, which is important to note if your crankshaft has been machined to that specification during a rebuild. The lead-free composite is also an environmentally safe choice for your engine project.