Gates EMH221 Engine Crankcase Breather Hose - Valve To Pipe

OE-Exact Crankcase Breather Hose

Gates EMH221 is an OE-exact engine crankcase breather hose for emission control and crankcase ventilation service. Built from molded plastic with clip-on ends, it restores the factory-style hose routing and connection points needed for proper system operation.

Compatible with select Audi TT, Audi TT Quattro, Volkswagen Golf, and Volkswagen Jetta applications, this Gates emission control hose is shaped for direct replacement where the original hose has cracked, split, or lost sealing integrity. The EMH221 is engineered to match the original fit and connection style for the listed vehicles.

Key Features

• Brand: Gates Emission Control Hose line
• Part number: EMH221
• OE Exact comparison rating for factory-style replacement
• Molded plastic construction for a direct-fit shape
• Clip-on end type at both connections
• Inside diameter: 16 mm (.63 in / .64 in)
• Centerline length: 235 mm (9.25 in)
• Designed for crankcase ventilation and emission control routing
• OE-style replacement for the original hose path

Detailed Description

The Gates Emission Control Hose line focuses on OE-exact replacement parts for crankcase ventilation and emission control systems. EMH221 is formed to match the original hose geometry, helping maintain proper routing between the valve and pipe connection points on the listed applications. For drivers searching for a Volkswagen Jetta crankcase breather hose, a Volkswagen Golf emission control hose, or an Audi TT breather hose replacement, EMH221 provides a direct-fit service part built to factory dimensions.

This hose uses molded plastic construction, clip-on ends, and a 235 mm centerline length to mirror the original layout. It is a practical replacement when the factory hose is damaged, brittle, or no longer sealing correctly. This part cross-references 06A133817Q and ABV0166 for the same application.

What It Helps Address

• Cracked or split crankcase breather hose
• Broken clip-on hose connections
• Vacuum leaks at the emission control hose routing
• Improper crankcase ventilation flow
• Check-engine concerns related to hose deterioration

Installation Notes and Tips

Verify the hose routing, end style, and dimensions before installation. EMH221 uses clip-on ends at both connections and is listed for valve-to-pipe placement on the supported vehicles. Inspect the mating ports for wear, debris, or damage before attaching the new hose, and confirm the hose seats fully at both ends.

Compatible With 2003-2006 Audi TT, valve to pipe; 2003 Audi TT Quattro, valve to pipe; 2000-2006 Volkswagen Golf, valve to pipe; and 2000-2005 Volkswagen Jetta, valve to pipe.

Quality Assurance

Gates manufactures this emission control hose as an OE-exact replacement part for the listed crankcase ventilation applications. The design and material selection are intended to match original equipment fit and function for the specified vehicles.