What does the 0.5mm size mean for these bearings?

The 0.5mm designation indicates that these bearings are undersize by half a millimeter. This is typically used when the crankshaft journals have been machined down (ground) to remove imperfections or to achieve a specific clearance. You would use these bearings if your crankshaft has been prepared to this specific size.

What is the Tri-M+ overlay mentioned in the description?

The Tri-M+ overlay is an enhanced babbitt layer applied to the bearing's surface. It's designed to improve the bearing's ability to withstand wear and maintain an oil film, especially in engines that experience moderate operating loads.

Are these bearings suitable for a high-performance or racing engine build?

These bearings are described as ideal for medium-load engines. While they are well-built, for extreme high-performance or racing applications with very high RPMs and heavy loads, you might need to consult King Engine Bearings' specialized racing lines to ensure they meet your specific demands.

Specifications

Brand: King Engine Bearings
Part #: MB4542CA0.5
UPC: 611500595202

King Nissan VQ20DE, VQ25DD, VQ30DE/DD/DET, VQ35DE (Size +0.5mm) Crankshaft Main Bearing (Set of 4)

Name: King Nissan VQ20DE, VQ25DD, VQ30DE/DD/DET, VQ35DE (Size +0.5mm) Crankshaft Main Bearing (Set of 4)
Brand: King Engine Bearings
SKU: king-engine-bearings-king-nissan-vq20de-vq25dd-vq30de-dd-det-vq35de-size-0-5mm-c-t14-217725
Price: 59.64 USD
Availability: BackOrder

$59.64

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King Nissan VQ20DE, VQ25DD, VQ30DE/DD/DET, VQ35DE (Size +0.5mm) Crankshaft Main Bearing (Set of 4). A well-built bearing set for engine rebuilds.

Key Features

Fits 14+ Nissan and Infiniti vehicles with VQ-series engines.
Set includes four crankshaft main bearings.
Features a tri-metal copper-based material construction.
Includes Tri-M+ enhanced babbitt overlay for improved performance.
Designed for medium-load engine applications.
Bearings are 0.5mm undersize for use with machined crankshafts.

⚠️ 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 Nissan or Infiniti, getting the crankshaft main bearings right is crucial for long-term health. This set from King Engine Bearings is specifically made for a range of popular VQ-series engines, including those found in vehicles like the Nissan Altima, Maxima, and Infiniti G35. These bearings are a key component that supports the rotating crankshaft, and having a well-made set ensures smooth operation and proper oil clearance.

King Engine Bearings has been specializing in this area since 1960, focusing on creating durable bearings. This particular set uses a tri-metal copper-based material with an enhanced babbitt overlay, known as Tri-M+ overlay. This construction is ideal for engines that experience medium loads, offering good wear resistance and the ability to maintain oil film under pressure. The bearings in this set are 0.5mm undersize, which is important to note if you're machining your crankshaft to match.

This set includes four main bearings, which is what you'll need for a standard VQ engine configuration. Ensuring you have the correct oil clearance is vital for engine longevity, so using a specialized bearing like this can make a difference in your rebuild.