What does the STDX size mean for these bearings?

The STDX designation means these main bearings are 0.001 inch undersize compared to a standard bearing. This is important if your crankshaft has been machined undersize to correct for wear or to achieve specific clearances.

What is the pmax black material used in these bearings?

The pmax black material is King Engine Bearings' racing line. It's formulated to handle higher loads and temperatures, making it suitable for performance-oriented engine builds where stock bearings might not be sufficient.

Are these bearings suitable for a stock engine rebuild?

While these bearings are designed for performance applications, they can also be used in a stock rebuild if you are machining the crankshaft to the STDX size. For a completely stock rebuild without machining, you would typically look for standard size bearings.

Specifications

Brand: King Engine Bearings
Part #: MB5286XPSTDX
UPC: 611500556784

King Engine Bearings Toyota 1UZ-FE/2UZ-FE/3UZ-FE (Size STDX) Performance Main Bearing Set

Name: King Engine Bearings Toyota 1UZ-FE/2UZ-FE/3UZ-FE (Size STDX) Performance Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-toyota-1uz-fe-2uz-fe-3uz-fe-size-stdx--t14-45141
Price: 205.07 USD
Availability: BackOrder

$205.07

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King Engine Bearings performance main bearing set for Toyota 1UZ-FE/2UZ-FE/3UZ-FE engines. STDX size. Built for demanding applications.

Key Features

Fits 1990-2009 Lexus GS400, GX470, LS400, LX470, SC400 and 1998-2009 Toyota 4Runner, Land Cruiser, Sequoia, Tundra.
Designed for Toyota 1UZ-FE, 2UZ-FE, and 3UZ-FE engines.
Features King's pmax black racing material for enhanced load and temperature handling.
STDX size indicates a 0.001 inch undersize for crankshaft journals.
Well-built main bearings are essential for proper engine oil clearance and longevity.

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About this part

Product Details

King Engine Bearings is well-known for making solid engine components, and this performance main bearing set is a great example of their work. If you're rebuilding a Toyota 1UZ-FE, 2UZ-FE, or 3UZ-FE engine, these bearings are designed to handle the demands of performance builds. They fit a range of popular Toyota and Lexus vehicles, including models like the Lexus GS400, Toyota 4Runner, and Toyota Tundra.

This set features King's pmax black material, which is their racing line. This means they're built for higher loads and temperatures often found in performance applications. The STDX size indicates these are 0.001 inch undersize, which is important to note if you're machining your crankshaft. Using the correct bearing size is crucial for proper oil clearance and engine longevity.

When you're putting an engine back together, especially one that will see more than just daily driving, using well-built bearings like these from King can make a significant difference in how reliably it performs. They are a solid option for anyone looking to ensure their engine build is sound.