Gates EMH981 Engine Crankcase Vent Valve - PCV Valve

OE-Exact Crankcase Vent Valve

The Gates EMH981 crankcase vent valve is an OE-exact replacement for emission ventilation service on select Ford trucks and vans. Built with a plastic body and a 12 mm inside diameter, it is made for direct-fit service where accurate crankcase pressure control matters.

Use this PCV valve for Ford F-150, F-250 Super Duty, F-350 Super Duty, and E-Series applications that call for a crankcase vent valve in the emission control system.

Key Features

• Brand: Gates Crankcase Vent Valve line
• Part number: EMH981
• Plastic construction for OE-style replacement fit
• 12 mm inside diameter
• Single hose connector design
• Contents: PCV valve
• Direct replacement for emission control service on select Ford applications

Product Details

The Gates EMH981 is part of Gates’ crankcase ventilation product line, which includes pressure regulators, PCV valves, and oil separators built to match original equipment dimensions and installation points. This helps restore proper crankcase ventilation function and supports normal emission system operation on vehicles such as the Ford F-150 and Ford F-250 Super Duty. The EMH981 is also listed for Ford F-350 Super Duty, E-150, E-250, Econoline, Explorer, and related applications where the specified vent valve is used.

This part cross-references 4L2Z 6A666 BA for the same application.

What It Helps Address

• Crankcase pressure control concerns
• Emission ventilation system performance issues
• Oil vapor routing problems
• Rough idle conditions related to PCV system faults
• Vacuum leaks caused by a worn vent valve

Installation Notes

Verify the hose connector size and OE part number before installation. The 12 mm inside diameter and single hose connector layout should match the original service part on the listed Ford applications. Confirm the vehicle’s PCV valve location and inspect connected hoses for wear, cracking, or blockage during replacement.

Quality Assurance

Gates manufactures this crankcase vent valve as an OE-exact replacement intended to restore emission ventilation system operation and service life on the listed Ford applications. Part number EMH981 is built to match original fitment requirements for direct installation.