ACL 4M2737H-.025 Race Series Main Bearing Set for Nissan 300ZX VG30

Regular price: $132.95
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Sale price: $132.95

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Product Specification:

SKU:ACL4M2737H-.025

MPN: 4M2737H-.025

UPC: 9315726153048

Weight: 0.8 lb

Inventory: 2

Type: Bearings

Vehicle Fitment

1984-1999 Nissan 300ZX (Z31/Z32) - VG20E, VG20ET, VG30E, VG30ET, VG30DE, VG30DETT engines

Fitment Notes

.025mm oversize for use with reground crankshafts machined to this undersize spec; verify against your machinist's measurements before ordering

Features

Tri-metal construction engineered to withstand high RPM conditions and high stress loads
High-strength overlay plate with reduced thickness for improved fatigue resistance
Hardened steel backs for stronger bearing lining support and housing retention
Increased crush for improved bearing retention during high-performance driving
Flash plating eliminated from bearing backs for better heat transfer and housing grip
Increased eccentricity to compensate for bore distortion at high RPM and support hydrodynamic oil film formation

Specifications

Size: .025mm Oversize
Oil Clearance: Standard
Half Type: Identical Halves
Material: Tri-Metal Hardened Steel Backs
Max Overall Length: 0.748 in / 19 mm

Included Components

1x Complete Main Bearing Set

Product Description

The ACL 4M2737H-.025 Race Series main bearing set is engineered for the Nissan VG20 and VG30 engine family found in the 300ZX, built to handle the higher RPMs and stress loads of performance and track use. The tri-metal design pairs a high-strength overlay plate with hardened steel backs, giving the bearings improved fatigue resistance and better support under sustained high-load conditions.

This .025mm oversize set is intended for engines with a crankshaft reground to match, making it a solid choice for rebuilds where the factory journal size has been machined down. Increased crush and eccentricity in the design help maintain bearing retention and support proper oil film formation even under demanding, high-RPM driving.