Gates EMH334 Engine Crankcase Breather Hose - Valve Cover To Intake Tube

Gates EMH334 Crankcase Breather Hose

The Gates EMH334 is an OE-exact engine crankcase breather hose for emission control service. Built from durable plastic with OE-style end connections, it restores the crankcase ventilation path between the valve cover and intake tube on select BMW applications.

As part of Gates’ Emission Control Hose line, this replacement hose is engineered for direct-fit service where the original crankcase ventilation hose has cracked, hardened, or lost sealing performance. The EMH334 is shaped for the specified routing and uses OE comparison rating: OE Exact.

Key Features

• OE-exact replacement for crankcase ventilation and emission control service
• Fits the valve cover to intake tube position on select BMW models
• Plastic construction for application-specific durability
• Inside diameter: 16.4 mm / 18 mm (.64 in / .7 in)
• Centerline length: 335.8 mm (13.12 in)
• Clip-on and push-in end types for OE-style connection points
• Protective sleeve included for added hose protection
• Gates EMH334 part number for direct identification

Detailed Description

The Gates EMH334 emission control hose is designed to replace the crankcase breather hose used in the valve cover to intake tube routing on BMW turbocharged applications. It is built to match OE dimensions and connection style, helping restore proper crankcase ventilation and emission system operation after the original hose has deteriorated. This part number, EMH334, is listed for BMW M2, BMW 335i, BMW 435i, BMW M235i, BMW ActiveHybrid 3, and related xDrive and Gran Coupe variants within the confirmed fitment range.

This part cross-references BMW 11127599753 for the same application.

What It Helps Address

• Cracked or brittle crankcase breather hose
• Vacuum leaks at the valve cover to intake tube connection
• Oil vapor routing issues in the crankcase ventilation system
• Emission system performance loss from a damaged hose
• Improper sealing at OE-style clip-on or push-in connections

Installation Notes and Tips

Verify the hose routing, end style, and centerline length before installation. Confirm the connection points are clean and free of damage so the clip-on and push-in ends seat correctly. This hose is specified for the valve cover to intake tube position on the listed BMW applications, including 2013-2018 BMW 335i, BMW 435i, BMW M235i, and BMW M2 fitments.

• Fits 2016-2018 BMW M2, Valve Cover To Intake Tube
• Fits 2014-2016 BMW 335i GT xDrive, Valve Cover To Intake Tube
• Fits 2014-2016 BMW 435i, Valve Cover To Intake Tube
• Fits 2015-2016 BMW 435i Gran Coupe, Valve Cover To Intake Tube
• Fits 2014-2016 BMW 435i xDrive, Valve Cover To Intake Tube
• Fits 2015-2016 BMW 435i xDrive Gran Coupe, Valve Cover To Intake Tube
• Fits 2014-2016 BMW M235i, Valve Cover To Intake Tube
• Fits 2015-2016 BMW M235i xDrive, Valve Cover To Intake Tube
• Fits 2013-2015 BMW 335i, Valve Cover To Intake Tube
• Fits 2013-2015 BMW 335i xDrive, Valve Cover To Intake Tube
• Fits 2013-2015 BMW ActiveHybrid 3, Valve Cover To Intake Tube
• Fits 2014 BMW 235i, Valve Cover To Intake Tube

Quality Assurance

Gates manufactures this hose as an OE-exact emission control replacement, using application-specific materials and dimensions to match the original part’s function and fit. The EMH334 is part of Gates’ Emission Control Hose line, focused on restoring proper crankcase ventilation performance in the specified BMW applications.