What does the 0.5mm undersize mean for these bearings?

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 (ground) to correct wear or damage, and the undersize bearing is needed to achieve the correct bearing clearance.

Are these bearings suitable for high-performance or racing SR20DE engines?

These particular bearings are described as ideal for low to medium-load engines. For high-performance or racing applications, you would typically look for bearings designed for higher loads and stresses, often with different materials or construction.

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

A lead-free composite material is an environmentally safer option compared to traditional bearings that may contain lead. It helps reduce the environmental impact during manufacturing and disposal, while still providing reliable performance for the intended engine loads.

Specifications

Brand: King Engine Bearings
Part #: MB5243AM0.5
UPC: 611500300325

King Engine Bearings Nissan SR20DE (Size 0.5mm) Performance Main Bearing Set

Name: King Engine Bearings Nissan SR20DE (Size 0.5mm) Performance Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-nissan-sr20de-size-0-5mm-performance-m-t14-4318612
Price: 44.99 USD
Availability: BackOrder

$44.99

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Fits 1991-2002 Infiniti G20. King Engine Bearings 0.5mm undersize main bearing set for SR20DE engines. Ideal for low to medium-load applications.

Key Features

Fits 1991-2002 Infiniti G20, 1995-1998 Nissan 200SX, 1991-1993 Nissan NX, and 1991-1994, 1998-2001 Nissan Sentra.
Main bearing set for Nissan SR20DE engines.
0.5mm undersize sizing.
Constructed with a bi-metal aluminum material.
Features a lead-free composite for environmentally safe operation.
Ideal for engines experiencing low to medium load conditions.

⚠️ 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 working on the engine for your 1991-2002 Infiniti G20, Nissan 200SX, NX, or Sentra with an SR20DE motor, these main bearings from King Engine Bearings are a solid option. As bearing specialists since 1960, King focuses on making dependable engine bearings, and this set is designed for engines that aren't under extreme stress.

These main bearings are made from a bi-metal aluminum material and feature a lead-free composite. This makes them an environmentally safe choice and well-suited for engines that operate under low to medium loads. The set is 0.5mm undersize, which is important to note if you're rebuilding or replacing worn components. King's specialization means they understand the critical role bearings play in engine health and longevity.