Used Infiniti engines
Where can you buy a tested used Infiniti engine for sale?
Car Part Headquarters supplies tested used and remanufactured Infiniti engines for cars, trucks, SUVs, and vans, shipped free to a commercial address across the lower 48 and backed by a 12-month parts-replacement warranty. Tell us your Infiniti’s year, model, and engine, and a specialist confirms the exact fitment before you pay.
Buying a used Infiniti engine
Infiniti runs the VQ V6 family shared with Nissan, in higher-output form. The engines are durable, and the recurring items are seals rather than internals.
VQ37VHR 3.7L V6
Oil gallery gasket leaks in the timing cover area are the best-known recurring issue, and the repair is the two small gaskets rather than the whole cover. Timing chain guides become a consideration at high mileage.
VK56 5.6L V8
The truck and SUV V8 has a solid longevity reputation in owner reporting, with condition and maintenance history driving value more than year.
Before you order
The VQ37VHR appears across several chassis with different accessory layouts. Match on interchange number rather than engine code so the correct brackets and accessories come with it.
Sources: NHTSA recalls and VIN lookup · VQ37VHR gallery gasket repair scope
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Infiniti engines we commonly source
We regularly source Infiniti engines across the lineup - the 5.6L V8, 5.0L V8, 4.5L V8, 3.7L V6, and 3.5L V6 among them. If your engine isn’t listed, tell us the year, model, and VIN and a specialist tracks down the right one.
- 5.6L V8
- 5.0L V8
- 4.5L V8
- 3.7L V6
- 3.5L V6
- 3.5L V6 Hybrid
- 3.0L V6 Turbo Diesel
- 2.5L V6
- 2.1L I4 Turbo Diesel
- 2.0L I4 Turbo
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Infiniti models we fit
From daily drivers to trucks and SUVs, we match engines and transmissions to the Infiniti models we service. Don’t see yours? The finder covers the full Infiniti lineup.
- Q50
- FX
- J30
VIN & interchange codes
How Infiniti engines are identified by VIN
Infiniti engines of the same displacement can differ by VIN code, emissions package, and build - which changes the correct part. Here is the real interchange breakdown for a 2015 Infiniti Q50, the kind of detail a specialist confirms from your VIN before anything ships:
| Engine / application | Interchange # |
|---|---|
| 3.5L (VIN A, 4th digit, VQ35HR) gasoline AWD | 300-82835 |
| 3.5L (VIN A, 4th digit, VQ35HR) gasoline RWD Premium | 300-82006 |
| 3.5L (VIN A, 4th digit, VQ35HR) gasoline RWD Sport | 300-82935 |
| 3.5L (VIN A, 4th digit, VQ35HR) electric assist motor | 300-400 |
| 3.7L (VIN B, 4th digit, VQ37VHR) AWD Base | 300-77237G |
| 3.7L (VIN B, 4th digit, VQ37VHR) AWD Premium | 300-77237G |
| 3.7L (VIN B, 4th digit, VQ37VHR) AWD Sport | 300-82037 |
| 3.7L (VIN B, 4th digit, VQ37VHR) RWD Base | 300-77237F |
Interchange data shown for reference. Availability and exact application are confirmed per order from your complete VIN.
Why buy your Infiniti engine from Car Part Headquarters
Tested before it ships
Every engine and transmission is compression- and pressure-tested and inspected before it leaves the warehouse.
12-month parts-replacement warranty
Approved claims are covered by replacement or store credit for a full year. Labor is not covered unless you add a parts-and-labor plan.
Free commercial shipping
Free delivery to a commercial address or freight terminal in 5-7 business days. Residential delivery is available for an added $175.
Fitment confirmed first
A specialist confirms the correct part for your exact year, make, model, and VIN before you pay - no guesswork.
How it works
Buying a used Infiniti engine, step by step
01
Tell us your vehicle
Enter the year, make, model, and part in the finder, or call. Add your VIN to pin the engine down exactly.
02
Get a confirmed quote
A specialist confirms availability, mileage, and compatibility, then sends a no-obligation quote.
03
Order & ship
We ship within 5-7 business days, free to a commercial address, with tracking.
04
Support after the sale
Questions before or after install are handled by the same team, backed by the 12-month parts warranty.
FAQ
Used Infiniti engines & transmissions
How much does a used Infiniti engine cost?
Price tracks the engine family more than the model year, and on Infiniti that usually means which of the VQ37VHR 3.7L V6 and VK56 5.6L V8 you need. Displacement alone does not settle it, because the same badge can cover variants that differ in cost and availability. Tell us the year, model and VIN and you get a firm quote on the engine your vehicle actually takes, with availability confirmed before you pay.
Which Infiniti engines do you carry?
We regularly source Infiniti engines across the lineup, including the 5.6L V8, 5.0L V8, 4.5L V8, 3.7L V6, 3.5L V6, 3.5L V6 Hybrid. If you don't see your exact engine, tell us the year, model, and VIN and a specialist confirms the right one before you pay.
Do you sell used Infiniti transmissions too?
Yes. Alongside used and remanufactured Infiniti engines, we source manual, automatic, and CVT Infiniti transmissions matched to your vehicle, backed by the same 12-month parts-replacement warranty.
Will the engine fit my exact Infiniti?
Fitment is confirmed before you pay. The VQ37VHR appears across several chassis with different accessory layouts. Match on interchange number rather than engine code so the correct brackets and accessories come with it. Give us the year, model and 17-digit VIN and a specialist matches the correct engine to your exact application.
Are your used engines and transmissions tested?
Yes. Every used engine and transmission is compression- and oil-pressure tested and put through a rigorous inspection process by automotive experts before they ship.
What warranty comes with a part?
Every engine and transmission includes a 12-month parts-replacement warranty, plus lifetime support from ASE-certified experts. Approved claims are handled by replacement or store credit - we do not issue cash refunds. Labor is not covered on the standard warranty. You can upgrade to 3-year parts and labor coverage for $499 at the time of purchase. Full warranty details are provided with your order.
Can I get a longer warranty that covers labor?
Yes. The standard coverage is 12 months on parts. For $499 you can upgrade to a 3-year warranty that covers both parts and labor, purchased at the time of your order. Ask your specialist to add it when you confirm your part.
Ready to find your Infiniti engine?
Tell us the year, make, and model. A specialist confirms the right engine or transmission, availability, and mileage before you pay.