Nissan Altima Engine Replacement: QR25DE & VQ35DE Cost Guide (2026)
Last Updated: March 2026
The Nissan Altima has been a staple of American roads for decades, offering reliability and comfort. Whether you have the fuel-efficient 4-cylinder or the powerful V6, engine replacement may eventually become necessary. Here's your complete guide to Nissan Altima engine replacement in 2026.
Altima Engine Options
QR25DE (2.5L 4-Cylinder)
- Used in Altima 2002-2018
- 175-182 HP depending on year
- Excellent fuel economy (27-32 MPG combined)
- Most common Altima engine
VQ35DE (3.5L V6)
- Used in Altima 2002-2017
- 270 HP, sportier performance
- Less common but highly sought after
- Higher replacement cost
Nissan Altima Engine Replacement Cost
| Engine | Type | Parts | Labor | Total |
|---|---|---|---|---|
| QR25DE | JDM (40-60k miles) | $1,300 - $1,900 | $800 - $1,200 | $2,100 - $3,100 |
| QR25DE | Remanufactured | $2,000 - $2,800 | $800 - $1,200 | $2,800 - $4,000 |
| VQ35DE | JDM (40-60k miles) | $1,800 - $2,600 | $900 - $1,400 | $2,700 - $4,000 |
| VQ35DE | Remanufactured | $2,800 - $4,000 | $900 - $1,400 | $3,700 - $5,400 |
Common Altima Engine Problems
QR25DE Issues
- Timing chain noise: Rattle on startup in early models
- Oil consumption: Some 2007-2012 models
- Catalytic converter failure: Often due to oil burning
- head gasket: Rare but expensive
VQ35DE Issues
- Oil gallery gasket leak: Upper oil pan leaks
- Timing chain guides: Wear around 150,000 miles
- Oil consumption: Later model V6s
JDM Altima Engines: Best Value
JDM Nissan engines offer significant savings:
- Lower miles: 40,000-60,000 typical vs 150,000+ US junkyard
- Cost savings: $700-$1,200 less than remanufactured
- Reliability: Japanese maintenance culture
- Updated designs: Later production improvements
Matching the Right Engine to Your Altima
A matching engine code doesn't guarantee a matching engine. Versions of the same engine can differ in mount positions, sensors, wiring and accessories between models and years, and Altima engines were updated across generations. Check the years and models on the listing before you order, and send us your VIN if you're not sure. Our guide on how to make sure a used engine fits your car walks through what to check.
Replacement or Repair?
Replace engine if:
- Rod knock or catastrophic damage
- Compression below 120 PSI on multiple cylinders
- Severe overheating damage
- Cost to repair exceeds $2,000
Repair instead if:
- Single component failure (timing chain, head gasket)
- Car has under 150,000 miles
- Engine block is sound
FAQ
Can I swap a V6 into my 4-cylinder Altima?
Technically possible but expensive. Requires ECU, wiring harness, transmission, and suspension upgrades. Not cost-effective.
How long does Altima engine replacement take?
3-4 days at most shops. Allow 1 week total with scheduling.
Is a JDM engine reliable for daily driving?
Yes. JDM engines often have 40,000-60,000 miles and compression in spec. Proper installation and break-in ensures reliability.
Get a Quote from JDM Engine
JDM Engine sells used JDM engines and transmissions imported from Japan. Our listings show real photos of the unit, the approximate mileage, a stock number, and the years and models that unit is listed for.
- Free shipping to commercial addresses with a loading dock or forklift in the lower 48 states. Residential delivery is available for an added charge.
- Send us your VIN and we'll confirm the match before you order.
Call (973) 969-5190 or use our contact page. Browse JDM Nissan engines, or see our QR25 and VQ35 engines.
