Gates EMH139 Engine Crankcase Breather Hose - Valve Cover To Oil Separator

OE-Exact Crankcase Breather Hose

Gates EMH139 is an OE-exact engine crankcase breather hose for the emission control system. It restores the valve cover to oil separator connection with a molded plastic design, clip-on ends, and protective sleeve coverage for dependable service on BMW applications.

Compatible With BMW 325Ci, 330Ci, X3, X5, 325i, 325xi, 330i, 330xi, 525i, 530i, Z4, Z3, 323Ci, 323i, 328Ci, 328i, 528i, and select 323i/328i/328is E46 chassis applications. Gates EMH139 is built to match the original hose layout and connection style for direct replacement service.

• OE Exact replacement for the crankcase ventilation and emission control hose path
• Molded plastic construction for a factory-style fit
• Clip-on end type at both connections for secure attachment
• Inside diameter: 16 mm (.64 in.)
• Centerline length: 279 mm (11 in.)
• Protective sleeve included for added hose protection
• Designed for the valve cover to oil separator route

Product Details and Fitment

The Gates Emission Control Hose line focuses on replacement hoses that follow OE dimensions and connection points. EMH139 is a molded crankcase ventilation hose that helps restore proper routing between the valve cover and oil separator, supporting the emission system’s original operation on BMW 3 Series, 5 Series, X3, X5, Z3, and Z4 models. This part cross-references Genuine 11611432559 and Rein ABV0123 for the same application.

Fits 2001-2006 BMW 325Ci, Valve Cover To Oil Separator. Fits 2001-2006 BMW 330Ci, Valve Cover To Oil Separator. Fits 2006 BMW X3, Valve Cover To Oil Separator, W/O Cold Weather Pkg. Fits 2004-2006 BMW X3, Valve Cover To Oil Separator. Fits 2001-2006 BMW X5, Valve Cover To Oil Separator. Fits 2001-2005 BMW 325i, Valve Cover To Oil Separator. Fits 2001-2005 BMW 325xi, Valve Cover To Oil Separator. Fits 2001-2005 BMW 330i, Valve Cover To Oil Separator. Fits 2001-2005 BMW 330xi, Valve Cover To Oil Separator. Fits 2001-2005 BMW 525i, Valve Cover To Oil Separator. Fits 2001-2005 BMW 530i, Valve Cover To Oil Separator. Fits 2003-2005 BMW Z4, Valve Cover To Oil Separator. Fits 1999-2002 BMW Z3, Valve Cover To Oil Separator. Fits 2000 BMW 323Ci, Valve Cover To Oil Separator. Fits 2000 BMW 323i, Valve Cover To Oil Separator. Fits 2000 BMW 328Ci, Valve Cover To Oil Separator. Fits 2000 BMW 328i, Valve Cover To Oil Separator. Fits 1999-2000 BMW 528i, Valve Cover To Oil Separator. Fits 1999 BMW 323i, Valve Cover To Oil Separator, W/E46 Chassis. Fits 1999 BMW 328i, Valve Cover To Oil Separator, W/E46 Chassis. Fits 1999 BMW 328is, Valve Cover To Oil Separator, W/E46 Chassis.

Common Issues This Hose Can Address

• Cracked or brittle crankcase breather hose material
• Loose or damaged clip-on hose connections
• Oil separator routing problems at the valve cover
• Emission system leaks from a deteriorated breather hose
• Rough idle or drivability concerns tied to crankcase ventilation faults

Installation Notes and Tips

Confirm the valve cover to oil separator routing before installation and compare the original hose shape, end style, and length to EMH139. Inspect the mating ports and surrounding ventilation components for wear, oil residue, or damage before clipping the hose into place. On BMW applications such as the 325i, 330i, and X5, proper seating at both ends is important for maintaining a sealed connection.

Quality Assurance

Gates builds this emission control hose from high-quality materials for durability and service life, with OE-exact dimensions intended to match the original fit and function. EMH139 is engineered to restore the emission system’s intended operation when replacing a worn or failed crankcase breather hose.