Gates EMH158 Engine Crankcase Breather Hose - PCV Valve To Intake

OE-Exact Crankcase Breather Hose

Gates EMH158 is an OE-exact engine crankcase breather hose for the emission control and crankcase ventilation system. It restores the hose path between the PCV valve and intake on select Cadillac, Pontiac, and Oldsmobile applications, including 2003-2005 Cadillac DeVille, 2004-2005 Pontiac Bonneville, 2003-2004 Cadillac Seville, and 2003 Oldsmobile Aurora.

Built with plastic, rubber, and steel construction, this molded hose is shaped for direct replacement service and consistent routing. Gates EMH158 is made to match the original hose layout and dimensions for a clean repair on the emission control system.

Key Features

• OE-exact replacement for the crankcase ventilation and emission control hose
• Fits the PCV valve to intake connection on listed Cadillac, Pontiac, and Oldsmobile vehicles
• Molded design for proper routing and fit
• Constructed from plastic, rubber, and steel for durability
• Push-in end type at both ends for direct replacement installation
• Inside diameters: 8 mm (.325 in) and 9 mm (.35 in)
• Centerline length: 400 mm (15.75 in)

Detailed Description

Gates EMH158 is an emission control hose designed as an OE-exact replacement for crankcase ventilation service. It is engineered to restore the original hose connection between the PCV valve and intake, helping return the emission system to proper operation on 2003-2005 Cadillac DeVille, 2004-2005 Pontiac Bonneville, 2003-2004 Cadillac Seville, and 2003 Oldsmobile Aurora. The molded shape, push-in ends, and OE comparison rating support accurate fitment where the factory hose has cracked, softened, or lost its seal. This part cross-references Dorman - HELP 46052 for the same application.

Common Repair Uses

• Cracked or brittle crankcase breather hose
• Vacuum leaks at the PCV valve to intake hose connection
• Emission system fault caused by hose deterioration
• Oil vapor routing issues in the crankcase ventilation system
• Broken or distorted molded hose routing

Installation Notes and Tips

Verify the hose path, end style, and centerline length before installation. This hose uses push-in ends and is molded for the listed PCV valve to intake applications, so routing should match the original layout. Inspect adjoining PCV components, intake fittings, and seals for wear before completing the repair. Gates EMH158 is the correct search term for buyers looking for a replacement crankcase breather hose for these specific vehicles.

Quality Assurance

Gates markets this Emission Control Hose line as OE-exact replacement hardware built from durable materials for service life and restored emission-system performance. EMH158 is engineered to match original equipment specifications for the listed applications.