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

The 0.25mm designation indicates that these are undersize bearings. They are meant to be installed on a crankshaft that has been machined down by 0.25mm to account for wear or damage, ensuring a proper fit and oil clearance.

What type of engine load are these bearings best suited for?

These bearings utilize a bi-metal aluminum material and a lead-free composite, making them ideal for engines that experience low to medium loads. They offer a reliable solution for standard street applications and many performance builds.

Are these bearings compatible with all SR20DE engines?

These bearings are specifically designed for the SR20DE engine found in various Nissan and Infiniti models from the early 90s to early 2000s. Always verify your specific vehicle's fitment to ensure compatibility.

Specifications

Brand: King Engine Bearings
Part #: MB5243AM0.25
UPC: 611500300318

King Engine Bearings Nissan SR20DE (Size 0.25mm) Performance Main Bearing Set

Name: King Engine Bearings Nissan SR20DE (Size 0.25mm) Performance Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-nissan-sr20de-size-0-25mm-performance--t14-4318611
Price: 44.99 USD
Availability: BackOrder

$44.99

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Fits 1991-2002 Infiniti G20. King Engine Bearings Nissan SR20DE (Size 0.25mm) Performance Main Bearing Set. 0.25mm undersize.

Key Features

Fits 1991-2002 Infiniti G20, 1995-1998 Nissan 200SX, 1991-1993 Nissan NX, and 1991-1994, 1998-2001 Nissan Sentra.
This is a 0.25mm undersize main bearing set, designed for use with a machined crankshaft.
Constructed with a bi-metal aluminum material for durability.
Features a lead-free, environmentally safe composite.
Ideal for low to medium-load SR20DE engines.
From King Engine Bearings, a specialist in bearing manufacturing since 1960.

⚠️ 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 1991-1996 or 1999-2002 Infiniti G20, or a compatible Nissan SR20DE engine, a fresh set of main bearings is crucial. These main bearings from King Engine Bearings are specifically made for the SR20DE engine and are a 0.25mm undersize set, meaning they're intended for use with a crankshaft that has been machined down by 0.25mm to correct for wear or damage.

King Engine Bearings has been a specialist in this area since 1960, focusing on creating reliable engine bearings. This particular set uses a bi-metal aluminum material that's well-suited for low to medium-load engines, offering a solid foundation for your rebuild. The lead-free composite is also an environmentally safe option.