Gates EMH223 Engine Crankcase Breather Hose - Valve Cover To Tube

OE-Exact Crankcase Breather Hose

Gates EMH223 is an OE-exact engine crankcase breather hose for emission control service. It restores the crankcase ventilation path with a molded plastic construction and push-in ends for a direct replacement on select Audi A4, Audi A4 Quattro, and Volkswagen Passat applications.

The Gates Emission Control Hose line focuses on replacement hoses that match original equipment form and function. EMH223 is built to help return the emission system to proper operation while maintaining the fit and routing expected in the factory setup.

Key Features

• OE Exact replacement for crankcase ventilation and emission control service
• Molded plastic construction for the specified application
• Push-in end design at all connection points
• Inside diameter: 20 mm (.77 in)
• Centerline length: 127 mm (5 in)
• Designed for valve cover to tube routing
• Compatible with Audi A4, Audi A4 Quattro, and Volkswagen Passat fitments listed below

Detailed Description

Gates EMH223 is an engine crankcase breather hose used in the emission control and crankcase ventilation system. It is shaped as a molded replacement hose with OE-exact comparison rating, helping maintain the original routing and connection style on the vehicle. This part number is listed for 2001-2002 Audi A4, 2001-2002 Audi A4 Quattro, and 2000-2002 Volkswagen Passat applications at the valve cover to tube position. If you are replacing a worn or cracked breather hose on these vehicles, EMH223 provides the correct style and dimensions for the specified service point.

This part cross-references Rein ABV0177 for the same application.

What It Helps Address

• Cracked or brittle crankcase breather hose
• Vacuum leaks in the crankcase ventilation circuit
• Emission system routing issues at the valve cover to tube connection
• Oil vapor leakage caused by a damaged hose
• Rough idle or drivability concerns related to ventilation hose failure

Installation Notes and Tips

Verify the hose routing, end style, and dimensions before installation. EMH223 uses push-in ends and is molded for the listed valve cover to tube applications, so correct alignment is important during replacement. Inspect adjoining tubes and seals for wear, and confirm the original hose path is clear before installing the new breather hose.

Quality Assurance

Gates manufactures this hose as an OE-exact replacement for emission control and crankcase ventilation service. The design and material selection are intended to match the original application requirements for the listed Audi and Volkswagen models.