Gates EMH966 Engine Crankcase Vent Valve - PCV Valve

Gates EMH966 Crankcase Vent Valve Overview

The Gates EMH966 crankcase vent valve is an OE-exact replacement for vehicles using a heated PCV-style crankcase ventilation setup. Built from plastic with a 12 mm inside diameter and one hose connector, it is made to restore proper crankcase ventilation flow and help maintain emission system performance.

Gates EMH966 is a direct-fit crankcase vent valve for Ford, Mercury, Mazda, and Lincoln applications that use the PCV Valve position with heater-equipped crankcase ventilation.

Key Features

• OE-exact fit for straightforward installation
• Plastic construction for the specified application
• 12 mm inside diameter for proper hose connection
• Single hose connector design
• Supplied as a PCV valve component
• Supports restoration of crankcase ventilation and emission control function

Product Details

This Gates crankcase vent valve is part of the brand’s Crankcase Vent Valve line, which focuses on OE-style pressure regulators, PCV valves, and oil separators. The EMH966 is intended for vehicles that require a heater-equipped crankcase vent valve, helping return the emission ventilation system to normal operating behavior. It cross-references Gates EMH966 and Standard Ignition V421 for the same application.

Compatible With: Fits 2009-2012 Ford Escape, PCV Valve; Fits 2010-2012 Ford Taurus, PCV Valve; Fits 2008 Ford Taurus, PCV Valve; Fits 2009-2011 Mercury Mariner, PCV Valve; Fits 2004-2010 Ford Explorer, PCV Valve; Fits 2007-2010 Ford Explorer Sport Trac, PCV Valve; Fits 2004-2010 Mercury Mountaineer, PCV Valve; Fits 2007-2009 Mazda CX-9, PCV Valve; Fits 2008 Mercury Sable, PCV Valve; Fits 2007 Ford Edge, PCV Valve; Fits 2007 Lincoln MKX, PCV Valve; Fits 2003-2005 Lincoln Aviator, PCV Valve; Fits 2004 Ford Freestar, PCV Valve.

Common Issues This Part May Address

• Crankcase ventilation flow restriction
• Rough idle related to PCV system wear
• Oil vapor control problems in the emission system
• Check engine light concerns tied to crankcase ventilation faults
• Vacuum imbalance caused by a failing vent valve

Installation Notes and Tips

Verify the vehicle uses the PCV Valve position with heater before ordering. Match the 12 mm inside diameter and hose connector layout to the original part, and inspect the surrounding hoses and fittings for wear, cracking, or contamination before installation. Confirm fitment by year, make, model, and engine configuration on Ford Escape, Ford Explorer, Mazda CX-9, and related applications.

Quality Assurance

Gates supplies OE-exact crankcase ventilation components engineered for accurate fit and dependable service in emission control applications. The EMH966 is built to restore the crankcase ventilation system to proper operation when the original valve is worn or no longer regulating flow correctly.