Gates EMH954 Engine Crankcase Vent Valve - Oil Separator or PCV Valve

Crankcase Vent Valve for Audi Applications

The Gates EMH954 crankcase vent valve is an OE-exact emission control replacement built for precise fitment and straightforward installation. It restores crankcase ventilation performance by helping regulate pressure and separate oil from vapors in the emission ventilation system.

Built with a plastic housing and an oil separator design, this Gates crankcase vent valve is made for Audi A4, A4 allroad, A4 Quattro, A6, A6 Quattro, A3, Q3, Q5, TT Quattro, and TTS Quattro applications listed below. The EMH954 is a direct-fit service part for vehicles using crankcase vent valve, PCV valve, or oil separator configurations.

• OE-exact Gates crankcase vent valve for emission control service
• Plastic construction with oil separator contents
• Inside diameter: 7 mm (.273 in.)
• 1 hose connector for direct replacement use
• Restores crankcase ventilation pressure regulation and oil separation function
• Cross-reference part number: 06K103495AF

Product Details and Fitment

Gates EMH954 is part of the Crankcase Vent Valve line, focused on OE-style replacement for emission ventilation system service. Gates engineers these components to match original fit and function, helping maintain proper crankcase pressure control and oil vapor management. This part cross-references 06K103495AF for the same application.

Compatible With: Fits 2025 Audi A4, Oil Separator; Fits 2022-2023 Audi A4, Oil Separator; Fits 2018 Audi A4, Oil Separator; Fits 2025 Audi A4 allroad, Oil Separator; Fits 2022-2023 Audi A4 allroad, Oil Separator; Fits 2018 Audi A4 allroad, Oil Separator; Fits 2025 Audi A4 Quattro, Oil Separator; Fits 2022-2023 Audi A4 Quattro, Oil Separator; Fits 2018 Audi A4 Quattro, Oil Separator; Fits 2021 Audi A6, N/A; Fits 2021 Audi A6 Quattro, N/A; Fits 2020-2021 Audi Q3, Oil Separator; Fits 2021 Audi Q5, Oil Separator; Fits 2021 Audi Q5 PHEV, Oil Separator; Fits 2021 Audi Q5 Sportback, Oil Separator; Fits 2019-2020 Audi A3, N/A; Fits 2019-2020 Audi A3 Quattro, N/A; Fits 2019-2020 Audi A4, N/A; Fits 2019-2020 Audi A4 allroad, N/A; Fits 2019-2020 Audi A4 Quattro, N/A; Fits 2019-2020 Audi A5 Quattro, N/A; Fits 2019-2020 Audi A5 Sportback, N/A; Fits 2020 Audi A6, Oil Separator; Fits 2018 Audi A6, Oil Separator; Fits 2016 Audi A6, Oil Separator; Fits 2019 Audi A5, N/A; Fits 2018-2019 Audi A6 Quattro, Oil Separator; Fits 2016 Audi A6 Quattro, Oil Separator; Fits 2019 Audi TT Quattro, Oil Separator; Fits 2019 Audi TTS Quattro, Oil Separator; Fits 2018 Audi A5, Oil Separator; Fits 2018 Audi A5 Quattro, Oil Separator; Fits 2018 Audi A5 Sportback, Oil Separator; Fits 2016-2017 Audi A3, Oil Separator; Fits 2017 Audi A3 Quattro, Oil Separator; Fits 2017 Audi A4, PCV Valve; Fits 2017 Audi A4 Quattro, PCV Valve; Fits 2017 Audi A6, PCV Valve; Fits 2017 Audi A6 Quattro, PCV Valve.

What This Part Helps Address

• Excess crankcase pressure from a worn or restricted vent valve
• Oil vapor separation issues in the emission ventilation system
• Rough idle or drivability concerns related to PCV system performance
• Oil contamination in intake-related ventilation passages
• Check engine light conditions tied to crankcase ventilation faults

Installation Notes and Tips

Verify the original part number and connector style before installation. This EMH954 uses a plastic body with one hose connector and a 7 mm inside diameter, so matching the OE routing and hose size is important for proper sealing and operation. Confirm whether your vehicle uses an oil separator, PCV valve, or crankcase vent valve configuration at the listed position before ordering.

Quality Assurance

Gates supplies OE-exact crankcase ventilation pressure regulators, PCV valves, and oil separators to restore emission system operation and service life. The EMH954 is built to match original fit and function for the Audi applications listed above.