Gates EMH975 Engine Crankcase Vent Valve - PCV Valve

Gates EMH975 Crankcase Vent Valve

The Gates EMH975 is an OE-exact crankcase vent valve for emission control service. Built with a plastic body and a 13 mm (0.5 in.) inside diameter, it is made for direct replacement on supported Mazda applications and helps restore proper crankcase ventilation system operation.

For Mazda 3, Mazda 3 Sport, Mazda 6, Mazda CX-5, and Mazda CX-30 applications, this Gates crankcase vent valve is built for exact fit and straightforward installation. The EMH975 is part of Gates’ Crankcase Vent Valve line, focused on restoring emission ventilation performance to factory-style operation.

Key Features

• OE-exact crankcase vent valve for emission control service
• Plastic construction for direct replacement fitment
• 13 mm (0.5 in.) inside diameter
• Single hose connector design
• Supplied as a PCV valve component
• Fits supported Mazda 3, Mazda 3 Sport, Mazda 6, Mazda CX-5, and Mazda CX-30 applications

Product Details

Gates EMH975 is an engine crankcase vent valve used in the crankcase ventilation system to help regulate pressure and maintain proper emission system function. Gates positions this product line as an OE-style replacement solution for crankcase ventilation pressure regulators, PCV valves, and oil separators, with an emphasis on exact fit and easy installation. If you need a Mazda 3 PCV valve replacement or a Mazda CX-5 crankcase vent valve replacement, EMH975 is built for the listed applications and related interchange references.

This part cross-references Standard Ignition V561 for the same application.

What It Helps Address

• Crankcase pressure regulation issues
• Emission ventilation system performance loss
• Rough idle related to PCV system faults
• Oil vapor control problems in the crankcase ventilation circuit
• Check engine concerns tied to ventilation system malfunction

Installation Notes

Verify the vehicle year, make, model, and PCV valve position before installation. Confirm the hose connection size matches the 13 mm inside diameter specification and inspect the surrounding ventilation hoses for wear, cracking, or blockage during service. For Mazda 3, Mazda 6, and CX-5 crankcase vent valve replacement jobs, matching the OE-style layout helps support proper fit and function.

Quality Assurance

Gates manufactures this crankcase vent valve as an OE-exact replacement part for supported Mazda applications. The EMH975 is engineered to restore the emission ventilation system to proper operating condition and support long service life when installed on the correct vehicle application.