Gates EMH178 Engine Crankcase Breather Hose - Oil Separator To Engine (Upper)

Gates EMH178 Crankcase Breather Hose

The Gates EMH178 is an OE-exact crankcase breather hose for emission control and crankcase ventilation service. Built from molded rubber with push-in ends, it restores the upper oil separator to engine connection on select Volvo applications, including Volvo S60, V70, XC70, S80, and XC90 models.

Gates Emission Control Hose components are built for direct-fit replacement in emission and crankcase ventilation systems. The EMH178 follows the original hose layout and dimensions for a clean service replacement on Volvo crankcase ventilation routing.

Key Features

• OE-exact replacement for crankcase ventilation and emission control service
• Molded rubber construction for durability and service life
• Push-in end type on both ends for direct routing
• Single-hose design with no branches
• Inside diameters: 1.53 in (39 mm) and 0.9 in (23 mm)
• Centerline length: 2.5 in (64 mm)
• OE comparison rating: OE Exact

Detailed Description

Gates EMH178 is an engine crankcase breather hose designed for the emission control system connection between the oil separator and engine upper routing. Its molded rubber construction and OE-exact dimensions help maintain the original hose path and fitment on supported Volvo vehicles. This part number, EMH178, is listed for 2001-2009 Volvo V70, 2003-2009 Volvo S60, 2003-2007 Volvo XC70, 2003-2006 Volvo XC90, and 2004-2006 Volvo S80 applications, depending on engine configuration and model year. This part cross-references Rein ABV0228 for the same application.

What It Helps Address

• Cracked or split crankcase breather hose
• Vacuum leaks in the crankcase ventilation circuit
• Oil separator to engine upper hose deterioration
• Emission system routing issues caused by aged rubber
• Rough idle or drivability concerns related to hose leakage

Installation Notes and Tips

Verify the vehicle year, model, and engine application before ordering, since fitment varies by Volvo platform and engine number notes. The EMH178 uses push-in ends and molded routing, so inspect the mating ports, seals, and surrounding ventilation components before installation. Confirm the hose path matches the original upper oil separator-to-engine routing on your vehicle.

Quality Assurance

Gates manufactures this hose as an OE-exact replacement for emission control and crankcase ventilation service, using materials selected for durability and service life. The EMH178 is built to restore the original emission system hose function on the listed Volvo applications.