Nissan's VQ family is one of the most durable and widely-used V6 lineups in automotive history, appearing in the 350Z, G35, Maxima, Altima, and more across two decades. The two codes you'll encounter most often for swaps are the VQ35DE and the VQ35HR. Here's what actually separates them and how to choose. This is part of our JDM engine codes guide.
At a glance
- The VQ35DE is the original-generation 3.5L V6 — broad availability, lower cost, the right choice for earlier Z33 and V35 chassis.
- The VQ35HR is the revised "High Rev" variant with a redesigned head, higher redline, and improved output — the correct code for later 350Z (2007) and all G35 Sport models from that era.
Specs side by side
| Spec | VQ35DE | VQ35HR |
|---|---|---|
| Displacement | 3.5L | 3.5L |
| Cylinder head | First-gen design | Revised ports, higher flow |
| Factory output | ~287 hp (Z33 spec) | ~306 hp (Z33 2007 spec) |
| Redline | ~6,600 rpm | ~7,500 rpm (HR = "High Rev") |
| VVT | Intake side only (CVTCS) | Both intake and exhaust (CVTCS) |
What "HR" actually means
HR stands for "High Rev" — and the name is descriptive. Nissan redesigned the combustion chamber and port geometry on the HR head to allow significantly higher revving without the valve float issues that limited the DE at sustained high RPM. The intake and exhaust cam timing were also updated with VVT on both camshafts rather than just the intake side as on the DE. The result is a meaningfully better head, not just a marketing revision.
Fitment: is the HR a drop-in for a DE?
Within the same chassis generation, the VQ35HR is often considered a drop-in replacement for the DE in 350Z and G35 applications, but it requires using the HR ECU and, in some cases, the HR intake manifold — it's not a bolt-in swap in the sense that a DE ECU will simply "see" an HR. If you're replacing a DE with an HR, plan on sourcing a matched ECU.
Current pricing from our inventory
From our current stock: VQ35DE engines typically run $749–$2,899 (median ~$999), while VQ35HR engines run approximately $1,499 across available units. The HR premium reflects its more recent production and the better head specification. For the larger VQ37VHR (3.7L), prices are typically around $1,699. See our cost guide for the full picture.
Which should you choose?
- Choose VQ35DE if: your chassis used a DE, your ECU is DE-spec, and you want a like-for-like replacement without additional tuning complexity or cost.
- Choose VQ35HR if: you want the better head, higher revline, and are willing to pair it correctly with the HR ECU — or if your original chassis came with an HR.
- Consider VQ37VHR if: you're in a G37, Q50, or Z34 platform and want the most current-gen VQ available with the most factory output.
Frequently asked questions
Do both codes bolt up to the same transmission?
Yes — both the DE and HR use the same bell housing bolt pattern and are paired with the same 6-speed manual or 5-speed automatic transmissions in their respective chassis applications.
Is the VQ35HR the same as the VQ35DE in an Altima?
No — the Altima used its own VQ35DE tune that's different from the 350Z performance spec. Nissan used the same code across many different power levels and applications; always confirm which exact vehicle your unit came from.
Can I tune a VQ35DE to match HR output?
You can close the gap somewhat with intake, exhaust, and tune modifications, but you can't change the fundamental head geometry and VVT system — at some point, swapping to an HR head or unit is more cost-effective than trying to tune a DE to HR levels.
Shop VQ engines
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