Nissan JDM Engines in Phoenix, Arizona
On a Nissan, the most important question is often whether the engine is the thing that failed.
Two engines account for most Nissan replacement demand in the Valley: the VQ35DE V6 and the QR25DE four. Between them they cover the Altima, Maxima, Murano, Quest, Pathfinder, Sentra SE-R and Rogue, plus a range of Infiniti models.
Nissan is also the manufacturer where the diagnosis matters most, because of the transmission.
The CVT question comes before the engine question
A great many of these vehicles use Nissan’s continuously variable transmission, and CVT failure is common enough that it should be positively ruled out before an engine is ordered.
The reason this matters so much is that the symptoms overlap almost completely with engine trouble. Hesitation, slipping and loss of power are what an owner would describe as an engine problem and are also exactly what a failing CVT does.
A replacement engine fitted behind a failing CVT does not fix the car and the money is not recoverable. Paying a shop to establish which component failed is the cheapest step in the job.
VQ35DE and VQ35HR are different engines
This is the most expensive mistake made on Nissan V6 cars. Despite sharing a displacement and the VQ35 name, the HR has a different deck height, different cylinder heads and a different accessory layout.
It will not stand in for a DE. Confirm which engine a listing actually describes before any money moves. The names invite the confusion and the cost of acting on it is an engine that cannot be installed.
The VQ family across Nissan and Infiniti
The VQ35DE is the most widely applied engine in this catalogue. It spans the Altima, Maxima, Murano, Quest and Pathfinder on the Nissan side, the 350Z in Nissan's sports application, and several Infiniti models including the G35, FX35 and I35.
What makes this tricky is that front-drive and rear-drive applications are different parts. The Altima and Murano mount the engine transversely with a different sump, accessory drive and mounting than the longitudinally mounted unit in the 350Z and G35. A VQ35DE from one will not bolt into the other without modification, and in most cases will not work at all.
The VQ37VHR that appears in the 370Z and G37 is a separate engine. It shares the VQ family name and some visual resemblance but is not interchangeable with the VQ35DE. The cylinder heads, valvetrain and displacement are all different. Listings that refer to it loosely as a "VQ35" are describing the wrong engine.
QR25DE: the four-cylinder side
The QR25DE covers the four-cylinder Altima, the Sentra SE-R and the Rogue. It is a 2.5-litre inline-four with a good reputation overall, but it has one issue worth knowing about.
Earlier QR25DE units, roughly through the mid-2000s, are known for catalyst material breaking down and being drawn back into the combustion chambers. That causes scoring on the cylinder walls and eventual oil consumption. If you are looking at an engine from that era, asking why the donor car was retired is a reasonable step.
On the CVT-equipped models, the Altima and the Rogue especially, ruling out CVT failure before ordering an engine matters just as much as with the V6. A four-cylinder Altima with hesitation and poor acceleration may have a failing transmission rather than a tired engine, and the symptoms are close enough that a diagnosis is the cheapest step.
Nissan engine families
Each page covers the variants, where the code is stamped, and what changes between units of the same family.
- VQ35DE3.5 L · V6, 60-degreeNissan’s 3.5-litre V6: fitted to the Altima, Maxima, Murano, Pathfinder, Quest and 350Z, and across the Infiniti range. One of the most widely available used V6s in Phoenix.
- QR25DE2.5 L · Inline-fourNissan’s 2.5-litre four from the Altima, Sentra and Rogue: the four-cylinder counterpart to the VQ35DE and a very common Phoenix replacement.
- VQ37VHR3.7 L · V6, 60-degreeThe VQ37VHR is the higher-output evolution of the VQ family, replacing the VQ35DE in the 370Z, G37, Q50 and QX50 with variable valve event and lift technology.
- VK56DE5.6 L · V8, 90-degreeThe VK56DE is Nissan's 5.6-litre V8, powering the Titan, Armada and QX56 with a robust design that shares little with the smaller VQ family.
Nissan vehicles
Start here if you know the car but not the engine. Each page breaks the model down by generation and trim.
- Nissan AltimaFour-cylinder and V6 Altimas use the QR25DE and VQ35DE respectively, and on many of them the transmission deserves checking before the engine.
- Nissan MuranoEvery Murano is a VQ35DE, which makes the engine easy to identify and the transmission the thing to check.
- Nissan MaximaThe Maxima has used the VQ30DE and VQ35DE V6 engines, with the CVT transmission being the critical variable that affects whether an engine replacement makes sense.
- Nissan SentraThe Sentra used the QR25DE in the SE-R Spec V and the QR18DE/HR16DE in base models, with the SE-R being the most commonly replaced engine in Phoenix.
- Nissan RogueThe Rogue has used the QR25DE four-cylinder across all generations, with the CVT transmission being the primary concern when evaluating whether an engine replacement is the right investment.
- Nissan PathfinderThe Pathfinder shifted from the VQ35DE to the VK56DE V6 across its generations, with the CVT transmission on later models being the key variable in the replacement decision.
- Nissan 350ZThe 350Z used the VQ35DE V6 with a Rev-up higher-output specification in later models, making the exact variant critical for a correct replacement.
Check availability for your Nissan
Serving Phoenix, Mesa, Chandler, Scottsdale, Glendale, Gilbert and the wider Valley. Year, model and trim is enough to start.
Common questions
Which Nissan engine do I need?
For most vehicles it is the QR25DE if the car is a four-cylinder and the VQ35DE if it is a V6. Which application of that engine you need depends on the model and drivetrain, since sump, accessory layout and mounting differ between front-drive and rear-drive cars. The VIN settles it.
Is my problem the engine or the CVT?
Worth establishing before buying anything. CVT failure is common on these vehicles and presents in ways that read as engine trouble. Ask your installer to confirm which component has actually failed. It is the single most valuable diagnostic step on a Nissan.
What Nissan engines are most commonly replaced in Phoenix?
The VQ35DE V6 and the QR25DE four-cylinder account for most replacement work. The VQ35DE covers the Maxima, Murano, Quest, Pathfinder, 350Z and several Infiniti models. The QR25DE covers the four-cylinder Altima, Sentra SE-R and Rogue. Both families are common in this market because of how many of those vehicles were sold in the Valley.
How do I know if my Nissan problem is the engine or the CVT?
The symptoms overlap almost completely. Hesitation, slipping and loss of power are what an owner would describe as engine trouble and are also exactly what a failing CVT produces. The only reliable way to tell is to have a qualified shop test both components. It is the most important diagnostic step on a Nissan because a replacement engine behind a failing CVT does not fix the car.
Related pages
- VQ35DE EngineNissan’s 3.5 V6 from the Altima, Murano, Maxima and 350Z.
- QR25DE EngineNissan’s 2.5 four from the Altima, Sentra and Rogue.
- VQ37VHR EngineNissan's 3.7 V6 with VVEL, replacing the VQ35DE in the 370Z and G37.
- VK56DE EngineNissan's 5.6 V8 for the Titan, Armada and QX56.
- Nissan AltimaQR25DE or VQ35DE, and check the transmission first.
- Nissan MuranoAlways a VQ35DE, which makes the CVT the thing to check.
- Nissan MaximaV6 only, and check the CVT first.
- Nissan SentraSE-R Spec V drives the replacement demand.
- Nissan RogueQR25DE across every generation, CVT is the variable.
- Nissan PathfinderVQ35DE V6 across generations, with the CVT on later models the key variable to check.
- Nissan 350ZVQ35DE with a Rev-up specification in later models and the VQ35HR in the final year.
- Infiniti EnginesInfiniti engines and the Nissan VQ family they share.
- JDM TransmissionsMatching a transmission to your engine and vehicle, and why they are quoted together.
- Nissan AltimaQR25DE or VQ35DE, and check the transmission first.
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