Gates EMH331 Engine Crankcase Breather Hose - Valve Cover To Intake Tube

OE-Exact Crankcase Breather Hose

The Gates EMH331 is an engine crankcase breather hose built for emission control service on select Mercedes-Benz applications. It restores the crankcase ventilation path with an OE-exact fit and rubber construction for dependable sealing and service life.

Compatible with 2001-2005 Mercedes-Benz C240 valve cover to intake tube routing, this hose supports proper crankcase ventilation and emission system operation. The Gates Emission Control Hose line focuses on direct-replacement hoses that match original routing and connection style.

Key Features

• OE-exact replacement for crankcase ventilation and emission control service
• Rubber construction for durability in engine-bay conditions
• Push-in end type for factory-style connection
• Centerline length: 10.25 in. (260 mm)
• Inside diameter: 0.35 in. / 0.6 in. (9.5 mm / 15 mm)
• Designed for valve cover to intake tube routing
• OE comparison rating: OE Exact

Detailed Description

Gates EMH331 is a replacement engine crankcase breather hose for emission control systems that need a direct-fit service part. It is made from rubber and shaped to follow the original routing on the vehicle, helping maintain proper crankcase ventilation and emission system performance. This part cross-references Genuine 1120180682 and R28556 for the same application.

For 2001-2005 Mercedes-Benz C240 models, the EMH331 is specified for the valve cover to intake tube position with branched hose notes. If you are searching for a Mercedes-Benz C240 crankcase breather hose, emission control hose, or valve cover to intake tube breather hose, this part number provides a direct OE-style replacement path.

Common Issues This Hose Can Address

• Cracked or split crankcase breather hose
• Vacuum leaks at the valve cover to intake tube connection
• Unstable crankcase ventilation flow
• Emission system performance concerns caused by hose deterioration
• Oil vapor routing problems from a worn breather hose

Installation Notes and Tips

• Verify the hose routing against the original part before installation.
• Inspect the valve cover and intake tube connections for wear, debris, or hardened seals.
• Confirm the inside diameter and centerline length match the vehicle’s factory layout.
• Replace the hose if the original shows cracking, soft spots, or collapse.

Quality Assurance

Gates designs the Emission Control Hose line as OE-exact replacement hardware using high-quality materials for durability and service life. EMH331 is built to restore the emission system to proper operation on supported Mercedes-Benz C240 applications.