ACL 6B2639H-.025 Rod Bearings VQ35HR 370Z Q50 G37
ACL 6B2639H-.025 Rod Bearings VQ35HR 370Z Q50 G37
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ACL Nissan DETT VQ35HR DOHC 4V TT 0.025mm Oversized High Performance Rod Bearing Set

ACL
ACL6B2639H-.025
Bearings
1 Units In Stock - Ships Next Business Day
ACL, Bearings, Engine, Engine Block
$ 108.00
$ 108.00

Precision Fit for High RPM VQ35HR Builds

The 6B2639H-.025 rod bearing set gives VQ35HR engine builders a durable, tight tolerance bearing option for performance rebuilds that call for a 0.025mm oversize.

Key Features

  • 6B2639H-.025 features ACL Race Series trimetal construction for high load durability
  • Increased eccentricity on the 6B2639H-.025 compensates for bore distortion at high RPM
  • Enlarged ID chamfers accommodate performance crankshaft fillet radii
  • Tight wall thickness tolerance for consistent, predictable oil clearance
  • 6B2639H-.025 is sized 0.025mm over standard for engines with reconditioned journals
  • Reduced overlay thickness on the 6B2639H-.025 improves fatigue resistance under sustained high RPM use

Fitment Table

Year Range Make Model
2009-2021 Nissan 370Z
2009-2020 Infiniti G37
2014-2020 Infiniti Q50

Specifications

Detail Value
MPN 6B2639H-.025
UPC 9315726465356
Engine VQ35HR 3.5L DOHC 4V
Bearing Type Connecting Rod, Trimetal
Size 0.025mm Oversized
Sold As Set

What's Included

  • Full set of 6B2639H-.025 connecting rod bearings for one VQ35HR engine

About ACL

ACL Bearing Company has manufactured engine bearings in Australia for decades, supplying Race Series trimetal bearings to builders who need consistent clearance control and high load durability for street and race engines.

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FAQ

What is the 6B2639H-.025?

The 6B2639H-.025 is an ACL Race Series oversized connecting rod bearing set for the Nissan and Infiniti VQ35HR engine, sized 0.025mm over standard.

Which vehicles use the 6B2639H-.025?

The 6B2639H-.025 fits the Nissan 370Z, Infiniti G37, and Infiniti Q50 with the VQ35HR engine.

Why choose an oversized bearing like the 6B2639H-.025?

The 6B2639H-.025 is used when the crankshaft journals have been machined 0.025mm undersize during a rebuild.

Is the 6B2639H-.025 suitable for high RPM use?

Yes, the 6B2639H-.025 uses increased eccentricity and enlarged chamfers designed for high RPM performance builds.

What material is the 6B2639H-.025 made from?

The 6B2639H-.025 uses ACL's trimetal construction with a lead tin copper overlay.

Does the 6B2639H-.025 fit the VQ37VHR engine?

No, the 6B2639H-.025 is sized for the VQ35HR engine specifically, though ACL offers separate part numbers for VQ37VHR applications.

How many bearings come in the 6B2639H-.025 set?

The 6B2639H-.025 includes a full set of rod bearings sufficient for one VQ35HR engine.

Should I measure clearance after installing the 6B2639H-.025?

Yes, ACL recommends verifying assembled oil clearance with a bore gauge after installing the 6B2639H-.025.

Install Instructions

  1. Disassemble the engine and inspect crankshaft journals.
  2. Confirm journal size matches the 6B2639H-.025 oversize spec.
  3. Clean bearing bores and journals thoroughly.
  4. Install the 6B2639H-.025 bearings into the rod and cap.
  5. Torque rod bolts to the engine manufacturer's specification.
  6. Verify assembled oil clearance with a bore gauge.
  7. Complete engine reassembly.

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