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The ACL 6B2639H-.25 Race Series Rod Bearing Set (0.25mm Oversized) is the best high-performance bearing upgrade for Nissan VQ35HR and VQ37VHR engines found in Infiniti G35/G37/Q50/Q60, Nissan 350Z/370Z, and other models. Engineered for high-RPM, boosted, or race applications, these bearings feature tri-metal construction, high-strength overlay, and precision sizing for maximum load capacity, reduced friction, and superior oil clearance – ideal for naturally aspirated, turbo, or supercharged builds pushing the limits of the VQ engine family.
| Specification | Detail |
|---|---|
| Part Number | 6B2639H-.25 |
| Bearing Type | Race Series Rod Bearings (0.25mm Oversized) |
| Material | Tri-Metal (Steel Back, Copper-Lead, High-Strength Overlay) |
| Engine | Nissan VQ35HR / VQ37VHR (Infiniti & Nissan V6) |
| Compatibility | Infiniti G35/G37/Q50/Q60, Nissan 350Z/370Z, FX35/FX37, EX35/EX37, M35/M37, QX50/QX70 |
| Oversize | 0.25mm |
| Quantity | Set of 12 (6 pairs) |
| Installation | Requires Engine Disassembly & Proper Clearance Check |
| Country of Origin | Australia |
| Warranty | Limited (ACL) |
| Year | Make | Model | Notes |
|---|---|---|---|
| 2007-2008 | Infiniti | G35 | VQ35HR (Base, Journey, Sport, X) |
| 2008-2013 | Infiniti | G37 | VQ37VHR (Base, IPL, Journey, Sport, X) |
| 2014-2024 | Infiniti | Q50 | VQ37VHR (Base, Red Sport 400, Hybrid, etc.) |
| 2014-2022 | Infiniti | Q60 | VQ37VHR (Luxe, Red Sport 400, etc.) |
| 2007-2009 | Nissan | 350Z | VQ35HR (Base, Enthusiast, Touring, Grand Touring, Nismo) |
| 2009-2020 | Nissan | 370Z | VQ37VHR (Base, Nismo, Sport, Touring, etc.) |
| Various | Infiniti | EX35/EX37, FX35/FX37, M35/M37, QX50/QX70 | VQ35HR/VQ37VHR Engines |
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