Gates EMH991 Engine Crankcase Vent Valve - PCV Valve

OE-Exact Crankcase Vent Valve

Gates EMH991 is an engine crankcase vent valve built for direct replacement in emission control systems that need accurate pressure regulation. It uses steel and plastic construction and a 12 mm (0.47 in.) inside diameter with one hose connector for a straightforward OE-style fit.

This Gates Crankcase Vent Valve line focuses on exact fit and easy installation while restoring crankcase ventilation performance. For buyers searching for a Jeep Liberty PCV valve or a Dodge Nitro crankcase vent valve, EMH991 matches the original application requirements and supports proper emission system operation.

Key Features

• OE-exact crankcase ventilation pressure regulator / PCV valve replacement
• Steel and plastic construction for application-specific durability
• 12 mm inside diameter, also listed as .47 in.
• Single hose connector for direct connection
• Fits emission control crankcase ventilation system applications
• Cross-reference: Mopar 53034065AA

Product Details

Gates EMH991 is part of the brand’s Crankcase Vent Valve line, which is built to restore the emission ventilation system to proper operating levels with an OE-style fit. It is used in vehicles such as the Jeep Liberty, Dodge Dakota, Dodge Nitro, Dodge Ram 1500, Jeep Commander, Jeep Grand Cherokee, Dodge Durango, Mitsubishi Raider, and Ram 1500 across the listed model years. If you need a replacement PCV valve for a 2007-2012 Jeep Liberty or a crankcase vent valve for a 2007-2010 Dodge Ram 1500, this part follows the original application pattern.

What It Helps Address

• Crankcase pressure regulation issues
• Faulty PCV valve operation
• Emission ventilation system performance loss
• Oil vapor routing problems in the crankcase ventilation system
• Fitment problems caused by non-OE replacement parts

Installation Notes and Tips

Verify the hose connector size and valve location before installation. Confirm the vehicle application against the listed fitment for your Jeep Liberty, Dodge Nitro, or other supported model, and compare the original part number when available. This part is a direct-fit style replacement for the PCV valve position in the crankcase ventilation system.

• Fits 2007-2012 Jeep Liberty, PCV Valve
• Fits 2011-2012 Ram 1500, PCV Valve
• Fits 2007-2011 Dodge Dakota, PCV Valve
• Fits 2007-2011 Dodge Nitro, PCV Valve
• Fits 2011 Ram Dakota, PCV Valve
• Fits 2007-2010 Dodge Ram 1500, PCV Valve
• Fits 2007-2010 Jeep Commander, PCV Valve
• Fits 2007-2010 Jeep Grand Cherokee, PCV Valve
• Fits 2007-2009 Dodge Durango, PCV Valve
• Fits 2007-2009 Mitsubishi Raider, PCV Valve

Quality Assurance

Gates manufactures this crankcase vent valve as an OE-exact replacement part for the emission control system. EMH991 is engineered to match the original application and support proper crankcase ventilation performance in the listed vehicles.