What does it mean that these bearings are 0.050 inches undersize?

This means the bearing surface is 0.050 inches smaller in diameter than a standard, or '0.000' undersize, bearing. This size is used when the crankshaft journals have been machined down by 0.050 inches to remove wear or imperfections.

Do these bearings come with installation instructions?

While these bearings are designed as a direct replacement, it's always best to refer to the manufacturer's official service manual for your specific vehicle. This will detail the correct torque specifications and lubrication procedures for installation.

What other parts are typically needed when replacing main bearings?

When replacing main bearings, it's common practice to also replace the connecting rod bearings, piston rings, and oil seals. If the crankshaft was machined, you'll need the corresponding undersize bearings.

Specifications

Brand: ACL
Part #: 4M2633A-.50

ACL Nissan V6 VQ30DE/VQ35DE 1995-on Engine Crankshaft Main Bearing Set

Name: ACL Nissan V6 VQ30DE/VQ35DE 1995-on Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-nissan-v6-vq30de-vq35de-1995-on-engine-crankshaft-main-bearing-set-t14-630732
Price: 20.13 USD
Availability: BackOrder

$20.13

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Fits 1995-1998 Nissan Maxima. ACL crankshaft main bearing set for VQ30DE/VQ35DE engines. Essential for engine rebuilds.

Key Features

Fits 1995-1998 Nissan Maxima.
ACL crankshaft main bearing set for VQ30DE and VQ35DE engines.
This set is 0.050 inches undersize for use with a machined crankshaft.
Built to original equipment specifications for a direct fit.
Essential components for engine rebuilding and repair.

No-fit, no charge. Wrong part? Send it back, free return label.

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About this part

Product Details

When you're rebuilding the heart of your 1995-1998 Nissan Maxima, especially with the VQ30DE or VQ35DE engine, the crankshaft main bearings are critical. These ACL main bearings are a direct replacement, meaning they're built to the original equipment specifications to ensure a proper fit and function. They sit between the crankshaft and the engine block, supporting the rotating assembly and handling the immense forces generated during combustion.

ACL has been making engine bearings for a long time, and this set is made with their standard materials designed for durability in daily driving conditions. This particular set is 0.050 inches undersize, which is important if your crankshaft has been machined undersize during a rebuild to clean up wear or damage. Using the correct undersize bearing is crucial for proper oil clearance and engine longevity.

When you're putting an engine back together, getting the bearing clearances right is key. Make sure to follow the manufacturer's recommended torque specifications and lubrication procedures when installing these bearings to ensure your engine rebuild is solid.