Gates EMH978 Engine Crankcase Vent Valve - PCV Valve

Gates EMH978 Crankcase Vent Valve

The Gates EMH978 crankcase vent valve is an OE-exact PCV valve built for direct replacement in emission control service. With a plastic body and precise fitment, it helps restore crankcase ventilation performance on select Cadillac and Chevrolet applications, including Cadillac CT5, Chevrolet Camaro, Cadillac CTS, and Chevrolet Corvette.

Key Features

• OE-exact crankcase ventilation pressure regulator for direct-fit service
• Plastic construction for application-specific fit and function
• Includes PCV valve content for crankcase ventilation repair
• Supports proper emission system operation and crankcase pressure control
• Gates EMH978 part number for easy identification and ordering

Product Details

Gates EMH978 is part of the Gates Crankcase Vent Valve line, a product line focused on OE-style crankcase ventilation pressure regulators, PCV valves, and oil separators. This valve is engineered to match original equipment dimensions for straightforward installation and consistent operation in the emission ventilation system. It is a direct replacement for vehicles such as the 2022-2026 Cadillac CT5, 2017-2022 Chevrolet Camaro, 2016-2019 Cadillac CTS, and 2015-2019 Chevrolet Corvette. This part cross-references Standard Ignition V626 for the same application.

What It Helps Address

• Excess crankcase pressure
• Rough idle related to PCV system faults
• Oil vapor control issues in the crankcase ventilation system
• Emission system performance concerns tied to a worn vent valve
• Fitment problems from a damaged or aging PCV valve

Installation Notes

Verify the vehicle year, make, model, and PCV valve position before installation. The Gates EMH978 is a direct replacement part, so it is intended to install in the original location without modification when matched to the correct application. Confirm the existing valve and hose routing on the vehicle before service, especially on Cadillac CT5, Chevrolet Camaro, Cadillac CTS, and Chevrolet Corvette applications.

Quality Assurance

Gates supplies OE-exact crankcase ventilation components to help restore emission ventilation system operation and service life. The EMH978 is built to the same application standards expected for original-fit replacement service.