What does the +0.25mm size mean for these bearings?

The +0.25mm designation means these bearings are designed for use when the crankshaft journals have been machined down by 0.25mm. This is a common practice when rebuilding an engine to ensure proper clearances with a worn or resurfaced crankshaft.

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

These bearings are described as ideal for medium-load engines. While King Engine Bearings specializes in quality, for extreme high-load or racing applications, you may want to consult with a performance engine builder to ensure they meet your specific needs.

What is the benefit of the lead-free composite material?

The lead-free composite material is environmentally safe and is specifically chosen for its suitability in medium-load engines. It helps provide reliable performance and durability for the intended application.

Specifications

Brand: King Engine Bearings
Part #: MB4526SI0.25
UPC: 611500582103

King Engine Bearings Toyota 1GR-FE (Size +0.25mm) Crankshaft Main Bearing Set

Name: King Engine Bearings Toyota 1GR-FE (Size +0.25mm) Crankshaft Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-toyota-1gr-fe-size-0-25mm-crankshaft-m-t14-110054
Price: 44.89 USD
Availability: InStock

$44.89

Only 4 left in stock

Fits 2003-2022 Toyota 4Runner. King Engine Bearings crankshaft main bearing set, size +0.25mm. Lead-free composite for medium-load engines.

Key Features

Fits 2003-2022 Toyota 4Runner, 2007-2014 Toyota FJ Cruiser, 2005-2015 Toyota Tacoma, and 2005-2014 Toyota Tundra.
Crankshaft main bearing set from King Engine Bearings, part number MB4526SI0.25.
Size is +0.25mm, intended for use with crankshafts machined to that undersize.
Features a lead-free, environmentally safe composite material.
Ideal for medium-load engines.
Constructed with a bi-metal aluminum material.

⚠️ 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 2003-2022 Toyota 4Runner, FJ Cruiser, Tacoma, or Tundra, these King Engine Bearings crankshaft main bearings are a solid option. They are specifically made for the 1GR-FE engine and come at a +0.25mm size, meaning they are designed to be used when the crankshaft journals have been machined down by 0.25mm. King has been specializing in bearings since 1960, focusing on making the best possible bearings for engine applications.

These bearings feature a lead-free, environmentally safe composite material that's well-suited for medium-load engines like the 1GR-FE. The bi-metal aluminum construction offers good performance and durability for this type of application. When you're putting an engine back together, the bearings are critical for ensuring smooth rotation and proper oil clearance between the crankshaft and the block.