Guide to the 2014-2016 INFINITI Q60 VVT Sprocket Replacement
Keep your Q60's VQ37VHR engine running smoothly by understanding VVT sprocket failure and choosing the right replacement part.
- Proper diagnosis is critical; VVT codes (P0011, P0021) can also be caused by low/dirty oil or faulty solenoids, which are much simpler fixes.
- This is a highly labor-intensive repair not recommended for DIY. Expect labor costs to be the largest part of the bill.
- While the timing cover is off, it is cost-effective to also replace the timing chain, guides, tensioners, and water pump.
- Hitachi is an OEM supplier for INFINITI, making their aftermarket sprockets a top-tier, reliable choice for this repair.
Is Your Q60's Engine Acting Up? It Could Be the VVT Sprockets.
If you're noticing a rough idle, a rattling noise from the front of the engine (especially on cold starts), poor acceleration, or a sudden drop in fuel economy, your Variable Valve Timing (VVT) sprockets could be failing. These parts are critical for the sophisticated VQ37VHR engine, but they can wear out over time, especially with high mileage or if oil maintenance has been neglected. When they fail, the engine's timing is compromised, leading to a noticeable decline in performance and efficiency.
Don't Ignore the Check Engine Light
A failing VVT sprocket will almost always trigger the Check Engine Light. Common trouble codes include P0011, P0014, P0021, and P0024. These codes point to a problem with camshaft position timing. 🎬 Watch: How to fix P0011/P0021 codes and perform a timing relearn. Ignoring these warnings can lead to more severe engine problems. It's important to have these codes diagnosed properly, as they can also be caused by a failing VVT solenoid or, more critically, low oil pressure.
Known Issues: The Importance of Oil Pressure
The VVT system is entirely dependent on clean oil and correct oil pressure to function. Many VVT-related error codes are actually caused by low or dirty engine oil. While the 2014-2016 Q60 benefits from an updated oil gallery gasket design that was problematic in earlier VQ engines, issues that cause low oil pressure (like leaks or a failing oil pump) can still starve the VVT sprockets of the pressure they need to operate, leading to failure. Before condemning the sprockets, it is essential to verify the engine oil is full, clean, and that the oil pressure is within specification.
Choosing the Right Aftermarket VVT Sprocket
When it's time for a replacement, you have options besides the dealership. For a labor-intensive job like this, choosing a quality part is crucial for long-term reliability. Here’s a breakdown of the available brands:
- OEM-Equivalent (Highest Tier): Hitachi is a well-known original equipment (OEM) supplier for Nissan and INFINITI. Choosing a Hitachi VVT sprocket is the closest you can get to the genuine part, ensuring perfect fitment and performance. They are manufactured to the exact specifications for your Q60's engine.
- High-Quality Aftermarket (Mid-Tier): Brands like Gates and Standard Ignition (SMP) have a strong reputation. Gates is a leader in timing system components, and their parts are designed to meet or exceed OE specifications. Standard Ignition also provides reliable choices that balance quality and cost.
- Value-Oriented (Standard Tier): Dorman offers affordable solutions and sometimes engineers parts to fix common OEM flaws. However, for a critical and difficult-to-access part like a VVT sprocket, investing in a higher-tier brand like Hitachi is often recommended to avoid the risk of premature failure and repeating the costly repair.
| Item | Estimated Cost |
|---|---|
| New OEM Sprocket (Each) | $700 - $900 |
| New Aftermarket Sprocket (Each) | $304.52 - $671.35 |
| Shop Labor | $1200 - $1800+ |
| Total Professional Replacement (Aftermarket) | $1800 - $3200+ |
Pro Tip: This is a very labor-intensive job. While the timing cover is off, it is highly recommended to replace the timing chain, tensioners, guides, and water pump at the same time to save on future labor costs.
🎬 Watch: A complete walkthrough of timing chain and gasket replacement.Frequently Asked Questions
Do I need to replace both intake VVT sprockets at the same time?
It is highly recommended. The sprockets wear at a similar rate, and the cost of the repair is mostly labor. Replacing both at once ensures reliability and prevents you from having to pay for the same expensive job twice if the second sprocket fails soon after the first.
Could my problem just be the VVT solenoid?
Yes. A faulty VVT solenoid can cause similar symptoms and error codes. Solenoids are much easier and cheaper to replace. Proper diagnosis is key to differentiate between a solenoid failure 🎬 See how to inspect and replace the VVT solenoids yourself. and a mechanical sprocket failure. Often, a mechanic will start by testing or replacing the solenoids before moving to the more complex sprocket replacement.
Is this a DIY job?
For most home mechanics, no. Replacing the VVT sprockets requires removing the engine's front timing cover, which is a complex and lengthy process. It requires special tools to hold the timing chain and ensure the engine timing is set correctly upon reassembly. Mistakes can lead to severe engine damage. This job is best left to an experienced professional.
Are there any recalls for the VVT sprockets on the 2014-2016 Q60?
No, there are no specific recalls issued by INFINITI or the NHTSA for VVT sprocket failure on the 2014-2016 Q60. Recalls for this model range have focused on other issues like fuel pumps or ECM software.
Helpful Videos
Technical Specifications
OEM Part Numbers: 13025-JK20A 13025-JK21A
This part is specific to the VQ37VHR 3.7L V6 engine. There are separate part numbers for the intake and exhaust sprockets, as well as for the left (Bank 2) and right (Bank 1) sides of the engine. Ensure you are ordering the correct part for the specific location.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- INFINITI Q60: