What does 'STD' size mean for these bearings?

STD stands for Standard size. This means the bearings are intended for use with a crankshaft that has not been machined or ground undersize. If your crankshaft has been reconditioned to a different size, you would need a different bearing set.

What is the PMaxBlack overlay?

PMaxBlack is a special overlay developed by King Engine Bearings. It's designed to provide superior load capacity, which is important for engines that experience higher stresses or are built for performance applications.

Does this bearing set come with all the necessary components for installation?

This listing is for the main bearing set only. It includes the main bearings themselves. You will need to ensure you have other necessary components for engine assembly, such as crankshaft bolts and assembly lube, which are typically sold separately.

Specifications

Brand: King Engine Bearings
Part #: MB4104XP
UPC: 611500555138

King Engine Bearings Nissan VG30DE/VG30DETT Performance Main Bearing Set - Size STD

Name: King Engine Bearings Nissan VG30DE/VG30DETT Performance Main Bearing Set - Size STD
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-nissan-vg30de-vg30dett-performance-mai-t14-4326154
Price: 115.81 USD
Availability: BackOrder

$115.81

On Backorder — Expected to ship by Apr 26, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

King Engine Bearings main bearing set for Nissan VG30DE/VG30DETT engines. STD size, MB4104XP. Well-built for superior load capacity.

Key Features

Fits a wide range of Nissan and Infiniti vehicles including the 300ZX, J30, and Frontier.
Features King's PMaxBlack overlay for superior load capacity.
Incorporates Radialock design for optimal crush height.
Constructed with a tri-metal copper-based material for durability.
Standard (STD) size main bearing set.

⚠️ 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

When you're rebuilding the bottom end of your Nissan or Infiniti, getting the main bearings right is crucial for engine health. This set from King Engine Bearings is designed for VG30DE and VG30DETT engines, found in popular vehicles like the Nissan 300ZX, Infiniti J30, and Nissan Frontier. These bearings are a well-built option to ensure your crankshaft spins smoothly and reliably within the engine block.

King specializes in bearings, and this set features their PMaxBlack overlay, which offers superior load capacity compared to standard bearings. They also incorporate Radialock, a design feature that helps maintain optimal crush height during installation, ensuring the bearing stays securely in place. The tri-metal copper-based material is known for its durability and good performance characteristics, making this a solid choice for your engine build.