Gates EMH084 Engine Crankcase Breather Hose

OE-Exact Crankcase Breather Hose

Gates EMH084 is an OE-exact engine crankcase breather hose for the emission control and crankcase ventilation system. It is built from molded plastic and formed to restore the original routing and sealing path between the oil separator and tee connection.

Compatible with select Audi A4, Audi A4 Quattro, and Volkswagen Passat applications, this hose supports proper crankcase ventilation service on vehicles that need a direct replacement for the factory-style emission hose. The Gates EMH084 is shaped for the specified connection points and dimensions to match the original layout.

Key Features

• OE-exact replacement for crankcase ventilation and emission control service
• Molded plastic construction for a factory-style fit and routing
• Push-in end type at both connections
• Inside diameters: 1.15 in. (29 mm) and .603 in. (15 mm)
• Centerline length: 10.25 in. (260 mm)
• OE comparison rating: OE Exact
• Designed for emission control hose replacement in the crankcase breather circuit

Product Details

Gates EMH084 is part of the Gates Emission Control Hose line, a product line focused on replacement hoses for crankcase ventilation and emission control routing. This hose is molded to follow the original path and connection style, helping maintain the intended flow path from the oil separator to the tee on supported Audi and Volkswagen applications. Use EMH084 when you need a direct replacement hose that matches the factory configuration rather than a universal cut-to-fit solution.

This part cross-references Dorman - HELP 46066 for the same application.

Common Problems This Hose Can Address

• Cracked or brittle crankcase breather hose
• Vacuum leaks caused by deteriorated emission hose material
• Improper crankcase ventilation routing after hose failure
• Oil separator to tee connection issues on supported vehicles
• Emission system performance problems related to a damaged hose

Installation Notes

• Verify the hose routing and connection points before installation.
• Confirm the inside diameters and centerline length match the original part.
• Inspect the oil separator, tee, and adjoining ventilation components for wear or contamination.
• Push-in ends should seat fully at both connection points for proper retention.

Quality Assurance

Gates manufactures this hose as an OE-exact replacement for emission control and crankcase ventilation service. EMH084 is engineered to restore the original system layout and performance on supported Audi A4, Audi A4 Quattro, and Volkswagen Passat applications.