ACL 6B2639H-STD Race Rod Bearings for Nissan VQ35HR/VQ37VHR/VR30DDTT

Vehicle Fitment

• 2007-2008 Nissan 350Z (3.5L VQ35HR V6)
• 2009-2020 Nissan 370Z (3.7L VQ37VHR V6)
• 2023-2025 Nissan Z (3.0L VR30DDTT Twin Turbo V6)
• 2007-2008 Infiniti G35 (3.5L VQ35HR V6)
• 2008-2013 Infiniti G37 (3.7L VQ37VHR V6)
• 2014-2015 Infiniti Q60 Coupe (3.7L VQ37VHR V6)
• 2014-2015 Infiniti Q40 (3.7L VQ37VHR V6)
• 2016-2025 Infiniti Q50 Red Sport (3.0L VR30DDTT Twin Turbo V6)
• 2017-2025 Infiniti Q60 Red Sport (3.0L VR30DDTT Twin Turbo V6)
• 2009-2012 Infiniti FX35 (3.5L VQ35HR V6)
• 2013 Infiniti FX37 (3.7L VQ37VHR V6)
• 2014-2025 Infiniti QX70 (3.7L VQ37VHR V6)
• 2009-2010 Infiniti M35 (3.5L VQ35HR V6)
• 2011-2013 Infiniti M37 (3.7L VQ37VHR V6)
• 2014-2025 Infiniti QX50 (3.7L VQ37VHR V6)

Fitment Notes

• Connecting rod bearings only -- main bearings sold separately
• Fits Nissan VQ35HR, VQ37VHR, and VR30DDTT engines only
• Does NOT fit earlier VQ35DE engines -- different rod journal dimensions
• Standard size (STD) -- for use with standard unmachined crankshafts
• Also available in .025mm and .25mm undersizes for machined crankshafts
• Extra oil clearance version available as 6B2639HX-STD
• Sold as a set of 6 bearings (one complete engine set for V6)
• Verify crankshaft rod journal condition and clearances before installation

Features

• ACL Race Series trimetal high-performance connecting rod bearings
• High-strength lead-tin-copper overlay plate with reduced thickness for improved fatigue properties
• Hardened steel backs for improved bearing lining support and housing retention
• Nickel barrier layer between overlay and copper-lead lining for durability
• Increased crush for improved bearing retention under high RPM conditions
• No flash plating on back -- improves heat transfer and housing grip
• Increased eccentricity to compensate for bore distortion at high RPM
• Precision machined to tight consistent wall tolerances
• Enlarged ID chamfers to accommodate performance crankshafts
• Identical halves for simplified installation

Specifications

• Part Number: 6B2639H-STD
• Brand: ACL
• Series: Race Series
• Type: Connecting Rod Bearings
• Bearing Size: Standard (STD)
• Bearing Material: F781 Trimetal
• Bearing Half Type: Identical Halves
• Max Rod Journal (Shaft) Size: 53.974mm (2.1250")
• Max Tunnel (Housing Bore) Size: 57.013mm (2.2446")
• Max Wall Thickness at Crown: 1.508mm (0.0594")
• Max Overall Length: 17mm (0.669")
• Oil Clearance: Standard
• Engine Applications: VQ35HR, VQ37VHR, VR30DDTT
• Quantity: Set of 6

Included Components

• ACL Race Series connecting rod bearing halves (12 -- 6 pairs)

Product Description

The ACL 6B2639H-STD is a set of six Race Series high-performance trimetal connecting rod bearings in standard size for Nissan VQ35HR, VQ37VHR, and VR30DDTT V6 engines. These bearings fit a wide range of Nissan and Infiniti applications including the 350Z, 370Z, Z, G35, G37, Q50, and Q60. Manufactured from F781 trimetal material, each bearing features a high-strength lead-tin-copper overlay plate with reduced thickness for improved fatigue resistance, hardened steel backs for superior bearing retention, and a nickel barrier layer for added durability under extreme loads. ACL eliminates flash plating on the bearing backs to maximize heat transfer and housing grip while increasing crush and eccentricity to maintain reliable performance at high RPM. Precision machined to tight wall thickness tolerances with enlarged ID chamfers to accommodate performance crankshafts, these identical-half bearings are designed for street performance and racing applications demanding consistent clearances and maximum reliability.