What does 'undersize 0.25mm' mean for these bearings?

This means the bearings are manufactured to be 0.25mm smaller in diameter than standard size. They are designed to be used when the crankshaft journals have been machined down to this specific undersize during an engine rebuild to correct wear or damage.

Are these bearings sold individually or as a set?

This is a set of main bearings. It includes all the necessary main bearings required to replace the set for your engine during an overhaul.

What is the typical lifespan of main bearings?

The lifespan of main bearings depends heavily on driving conditions, maintenance practices, and oil quality. However, they are typically replaced during an engine rebuild or when signs of wear like knocking noises or low oil pressure appear.

Specifications

Brand: ACL
Part #: 4M2633A-.25

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-t14-630816
Price: 14.63 USD
Availability: BackOrder

$14.63

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Fits 1995-1998 Nissan Maxima. ACL crankshaft main bearing set. Undersize 0.25mm for engine rebuilds.

Key Features

Fits 1995-1998 Nissan Maxima.
ACL crankshaft main bearing set for Nissan VQ30DE and VQ35DE V6 engines.
Main bearings support the crankshaft and maintain proper oil clearance.
This set is 0.25mm undersize, intended for use with machined crankshaft journals.
Well-built to precise tolerances for reliable engine performance.

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About this part

Product Details

This ACL main bearing set is built for Nissan VQ30DE and VQ35DE V6 engines, commonly found in the 1995-1998 Maxima. Main bearings are critical for supporting the crankshaft and ensuring it spins smoothly within the engine block. When they wear out, you can experience increased engine noise, oil pressure loss, and eventually, catastrophic engine failure. This set is specifically sized at 0.25mm undersize, meaning it's intended for use when the crankshaft journals have been machined down to match this size during an engine rebuild.

ACL is a well-known name in engine bearings, and this set is a solid option for anyone rebuilding their VQ engine. They are made to precise tolerances to ensure proper oil clearance and support for the crankshaft.