Gates EMH963 Engine Crankcase Vent Valve - PCV Valve

Crankcase Vent Valve for Nissan and INFINITI

The Gates EMH963 crankcase vent valve is an OE-exact PCV valve built for direct replacement in emission control systems. It is made from plastic and uses a single hose connector for straightforward installation on supported Nissan, INFINITI, and Chevrolet applications.

Gates’ Crankcase Vent Valve line focuses on exact fit and proper crankcase ventilation performance, helping restore the emission ventilation system to normal operation. The EMH963 is a practical replacement for drivers servicing a Nissan Sentra, Altima, Rogue, Frontier, or INFINITI QX80 with a worn or restricted PCV valve.

Key Features

• OE-exact crankcase vent valve for emission control service
• Plastic construction for direct-fit replacement
• Single hose connector layout
• Supplied as a PCV valve for crankcase ventilation repair
• Fits a wide range of Nissan, INFINITI, and Chevrolet City Express applications
• Cross-reference part numbers include Standard Ignition V400 and 6P1247

Detailed Description

Gates EMH963 is an engine crankcase vent valve used to regulate crankcase pressure and maintain proper ventilation through the PCV system. This part is listed for many Nissan and INFINITI models, including 2002-2012 Nissan Sentra, 2002-2012 Nissan Altima, 2008-2013 Nissan Rogue, 2005-2019 Nissan Frontier, and 2016-2022 INFINITI QX80. It also fits select Nissan Armada, TITAN, TITAN XD, NV200, NV2500, NV3500, Rogue Sport, Qashqai, Pathfinder, X-Trail, and Chevrolet City Express applications.

This part number, EMH963, is built to restore proper crankcase ventilation flow and support emission system operation when the original valve is clogged, sticking, or no longer regulating pressure correctly. The Gates EMH963 is a direct replacement choice for service work on Nissan Sentra and Altima PCV valve applications as well as other listed fitments.

What It Helps Address

• Excess crankcase pressure
• Oil vapor control issues in the PCV system
• Rough idle related to a faulty PCV valve
• Oil leaks caused by poor crankcase ventilation
• Emission system performance concerns tied to valve restriction

Installation Notes and Tips

Verify the vehicle year, make, model, and PCV valve location before installation. Inspect the hose connector and surrounding ventilation hoses for wear, cracking, or blockage, and replace damaged components as needed during service. Confirm the replacement valve matches the original configuration and hose connection style before final assembly.

Quality Assurance

Gates markets this Crankcase Vent Valve line as an OE-exact replacement solution for proper fit and dependable emission ventilation system operation. The EMH963 is engineered to match the original application requirements for supported Nissan, INFINITI, and Chevrolet vehicles.