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

This means the bearings are slightly smaller than standard size. They are intended for use when the engine's crankshaft journals have been machined down by 0.25mm during a rebuild. This ensures the correct oil clearance is achieved.

What is the tri-metal construction?

Tri-metal construction refers to bearings made with three layers of different metals. This design balances strength, the ability to embed small debris, and a low-friction surface, which is common in high-performance engine bearings.

Do these bearings come with installation instructions?

While these bearings are designed for a direct fit, it is always recommended to refer to the official manufacturer's service manual for your specific vehicle. This will provide the correct torque specifications and installation procedures.

ACL Nissan VG30DETT 3.0L-V6 0.25 Oversized High Performance Main Bearing Set

Specifications

Brand: ACL
Part #: 4M2737H-.25
UPC: 9315726153062

ACL Nissan VG30DETT 3.0L-V6 0.25 Oversized High Performance Main Bearing Set

Name: ACL Nissan VG30DETT 3.0L-V6 0.25 Oversized High Performance Main Bearing Set
Brand: ACL
SKU: acl-acl-nissan-vg30dett-3-0l-v6-0-25-oversized-high-performance-main-bearing-set-t14-13032
Price: 123.53 USD
Availability: InStock

$123.53

Only 4 left in stock

ACL Nissan VG30DETT 3.0L V6 main bearing set, 0.25mm undersize. Direct fit for many Infiniti and Nissan models.

Key Features

Fits 1990-1992 Infiniti M30, 1993-1997 Infiniti J30, 1997-2000 Infiniti QX4, 1987-1988 Nissan 200SX, 1984-1996 Nissan 300ZX, 1990-1994 Nissan D21, 1999-2004 Nissan Frontier, 1985-1994 Nissan Maxima, 1987-2000 Nissan Pathfinder, 1995 Nissan Pickup, 1993-2002 Nissan Quest, and 2000-2004 Nissan Xterra.
Main bearing set for Nissan VG30DETT 3.0L V6 engines.
Bearings are 0.25mm undersize, intended for use with a machined crankshaft.
Features a tri-metal construction for durability and performance.
Designed to provide proper oil clearance for engine longevity.

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Will this fit your vehicle?

Product Details

When you're rebuilding or refreshing the bottom end of your Nissan VG30DETT engine, a set of high-performance main bearings is crucial. This set from ACL is specifically made for the VG30DETT 3.0L V6 and comes 0.25mm undersize, which is important if your crankshaft journals have been machined down during a rebuild. ACL has been a well-known name in engine bearings for a long time, and these are built to handle the demands of performance applications.

These main bearings are made with a tri-metal construction, which is a standard for high-performance bearings. This means they have multiple layers of different metals to provide a good balance of strength, embeddability (the ability to absorb small debris without damage), and a low friction surface. The 0.25mm undersize means they are designed to be used with a crankshaft that has been ground down by 0.25mm to ensure a proper oil clearance and a snug fit. Proper oil clearance is key to ensuring your engine runs smoothly and lasts a long time.

This set is designed to fit a wide range of Infiniti and Nissan vehicles equipped with the VG30DETT engine. Make sure to check the fitment guide to confirm compatibility with your specific year and model. When installing, always refer to the manufacturer's service manual for the correct torque specifications and procedures to ensure a successful rebuild.