Gates EMH138 Engine Crankcase Breather Hose - Valve Cover To Oil Separator

OE-Exact Crankcase Breather Hose for BMW

The Gates EMH138 is an OE-exact engine crankcase breather hose for the emission control system. Built from plastic and rubber with molded clip-on ends, it restores the valve cover to oil separator connection on select BMW applications.

For BMW 323i, 525i, 525xi, 530i, 530xi, 325i, 325xi, 330i, 330xi, and Z4 applications, this Gates Emission Control Hose line focuses on direct-fit replacement parts that match original routing and connection style. The EMH138 uses a protective sleeve and molded construction to support service life in crankcase ventilation service.

Key Features

• OE Exact replacement for crankcase ventilation and emission control service
• Fits the valve cover to oil separator hose location on listed BMW models
• Plastic and rubber construction for durability
• Clip-on end type with molded ends for direct connection
• Inside diameter: 16 mm (0.625 in.)
• Centerline length: 304 mm (12 in.)
• Protective sleeve included
• OE comparison rating: OE Exact

Detailed Description

Gates EMH138 is part of the Gates Emission Control Hose product line, which is focused on replacement hoses for crankcase ventilation and emission control routing. This hose is built to match OE fit and function, helping restore the connection between the valve cover and oil separator on supported BMW 3 Series, 5 Series, and Z4 applications. The molded design, clip-on ends, and protective sleeve support a clean installation and proper hose routing in the engine bay.

This part cross-references Dorman OE Solutions 917-125 for the same application.

What It Helps Address

• Cracked or brittle crankcase breather hose material
• Vacuum leaks at the valve cover to oil separator connection
• Emission system faults related to crankcase ventilation routing
• Oil vapor transfer issues caused by a damaged hose
• Improper hose fit from non-OE-style replacement parts

Installation Notes and Tips

Verify the hose routing, end style, and connection points before installation. This EMH138 uses clip-on ends and molded construction, so the existing connectors should be inspected for wear, debris, or damage before the new hose is installed. Confirm the vehicle application by year, model, and position: Fits 2006-2011 BMW 323i, Valve Cover To Oil Separator; Fits 2006-2007 BMW 525i, Valve Cover To Oil Separator; Fits 2006-2007 BMW 525xi, Valve Cover To Oil Separator; Fits 2006-2007 BMW 530i, Valve Cover To Oil Separator; Fits 2006-2007 BMW 530xi, Valve Cover To Oil Separator; Fits 2006 BMW 325i, Valve Cover To Oil Separator; Fits 2006 BMW 325xi, Valve Cover To Oil Separator; Fits 2006 BMW 330i, Valve Cover To Oil Separator; Fits 2006 BMW 330xi, Valve Cover To Oil Separator; Fits 2006 BMW Z4, Valve Cover To Oil Separator.

Quality Assurance

Gates builds this emission hose as an OE-exact replacement using durable materials and a molded design intended to match original service requirements. Part number EMH138 is engineered for direct replacement on the listed BMW crankcase ventilation applications.