Positive Crankcase Ventilation Valve. Valve Control.
PCV Valve.

• Ventilates harmful gases so they don't enter your engine
• When clogged or damaged can cause high engine pressure or gasket failure
• Replacement best left to a professional

The Positive Crankcase Ventilation valve, or PCV Valve, controls gas emissions expelled from the crankcase in your INFINITI. The PCV Valve attaches to crankcase, which holds your vehicle's motor oil. As fuel burns, the engine oil within your crankcase produces gases that can be harmful to the interior of your INFINITI's engine and earth's atmosphere. Instead of giving those emissions the ability to enter the internal-combustion engine and develop gunk that will compromise the major systems of your INFINITI, the PCV Valve gives the gases a place to escape. They go into the combustion chamber to be burned. Lastly, they are emitted from your vehicle as fumes.

This tiny, but powerful part creates more control over harmful emissions and proper ventilation within the crankcase. When a PCV Valve wears out, it can cause engine issues. An obstructed or closed valve can result in high pressure in the engine, a blown gasket, leaky oil, squealing, moisture in the engine, or sensor problems. Sometimes a PCV Valve gets stuck open. In this case it can lead to black smoke, loud noises while your engine idles, a hard engine start, or oil in the PCV Valve.

Proper automotive maintenance can keep your PCV Valve from becoming stuck in the first place. However, if the PCV Valve in your INFINITI needs to be fixed, stop by a nearby INFINITI repair shop to diagnose your vehicle, unless you have automotive experience. Trust the professionals, as you don't want to make any rookie errors with the engine in your INFINITI!

You can order a replacement Engine PCV Valve for your INFINITI Q45 online. After you receive the genuine Engine PCV Valve, visit your nearest INFINITI service center. Read the What This Fits tab for specific fitment info.

Fits Q45