ACL 4M2737H-STD High Performance Main Bearings for Nissan VG-Series (Standard)

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Product Specification:

SKU:ACL4M2737H-STD

MPN: 4M2737H-STD

UPC: 9315726153024

Weight: 0.8 lb

Inventory: 24

Type: Bearings

Vehicle Fitment

1984-2004 Nissan/Infiniti with VG-series V6 (e.g., Nissan 300ZX, Pathfinder, Maxima, D21, Frontier, Quest; Infiniti J30, M30, QX4)

Fitment Notes

Covers Nissan VG-series engines: VG20E/ET/DET, VG30DE/DET/DETT/E/ET/i, VG33E.
Includes legacy platforms such as Nissan 300ZX Z31/Z32, Pathfinder, Maxima, etc. through early 2000s.
Does not include models beyond 2004; 2025 fitment unconfirmed.

Features

Standard size (STD) high-performance main bearings for VG-series engines
High-strength overlay plate optimized for fatigue resistance
Hardened steel backing for improved structural support and crush retention
3/4 grooved design for enhanced oil distribution to rod bearings
Increased crush tolerance for better bearing stability
Consistent wall tolerance for precise oil clearances
Enlarged chamfers to accommodate performance crankshaft fillets
Eliminated back flash plating to enhance heat transfer to housing

Specifications

Part No.: 4M2737H-STD
Bearing Size: Standard
Min Shaft Size: ~62.951 mm (2.4784 in)
Max Shaft Size: ~62.974 mm (2.4793 in)
Min Tunnel Size: ~66.645 mm (2.6238 in)
Max Tunnel Size: ~66.672 mm (2.6249 in)
Max Wall Thickness at Crown: ~1.83 mm (0.072 in)
Oil Clearance: Standard (vertical clearance ~0.011-0.077 mm)
Quantity: 8 pieces (4 upper + 4 lower)

Included Components

8x main bearing shells (4 upper + 4 lower halves)

Product Description

The ACL 4M2737H-STD High Performance Main Bearing Set delivers premium-quality, standard-size bearings tailored for Nissan VG-series V6 engines used across models like the 300ZX, Pathfinder, Maxima, and various Infiniti platforms through the early 2000s. Built with performance in mind, these bearings feature a hardened steel backing, high-strength overlay, and optimized grooving and crush characteristics to provide exceptional durability and lubrication under high-stress engine conditions.

Designed for rebuilds and high-output applications, the tri-layer construction supports consistent oil film formation, enhances heat dissipation, and resists fatigue over time. Coverage is verified through approximately 2004; fitment for 2025 or newer models remains unconfirmed. For applications beyond VG-series engines or later years, consult manufacturer catalogs or engine experts for cross-referenced compatibility.