Gates EMH304 Engine Crankcase Breather Hose - Valve Cover To Intake

Gates EMH304 Crankcase Breather Hose

The Gates EMH304 is an OE-exact crankcase breather hose for emission control service. Built from rubber with molded push-in ends, it restores the crankcase ventilation path between the valve cover and intake on select Nissan and INFINITI applications.

Gates Emission Control Hose products focus on direct-fit replacement for crankcase ventilation and emission routing. The EMH304 follows the original hose shape and dimensions for a clean service replacement on vehicles that need an OE-style emission hose solution.

Key Features

• OE Exact replacement for crankcase ventilation and emission control service
• Rubber construction for durability in engine-bay conditions
• Molded hose design with push-in ends
• 10 mm inside diameter at both ends
• 5.75 in. centerline length for the specified routing path
• Fits valve cover to intake routing on listed applications
• Gates EMH304 part number for direct identification

Detailed Description

The Gates EMH304 engine crankcase breather hose is engineered for emission control systems that route vapors from the valve cover to the intake. Its OE-exact design helps maintain the original hose path, fit, and connection style, which is important when replacing a cracked, hardened, or leaking breather hose. This part is listed for 2002 Nissan Altima, 2002-2003 Nissan Maxima, 2002-2004 INFINITI I35, and 2003-2007 Nissan Murano with valve cover to intake routing. If you are searching for a 2003-2007 Nissan Murano valve cover to intake breather hose or a 2002-2004 INFINITI I35 emission control hose, EMH304 matches the specified application.

What It Helps Address

• Cracked or split crankcase breather hose
• Vacuum leaks at the valve cover to intake hose path
• Oil vapor routing issues in the crankcase ventilation system
• Emission system performance problems caused by hose deterioration
• Improper hose fit from non-OE-shaped replacements

Installation Notes and Tips

Confirm the hose routing, end style, and inside diameter before installation. The EMH304 uses push-in ends and a molded shape, so the original routing should be followed closely during replacement. Inspect adjoining fittings and the intake connection for wear, oil residue, or damage before installing the new hose.

Quality Assurance

Gates designs this Emission Control Hose line as an OE-exact replacement solution for emission and crankcase ventilation service. The EMH304 is built to restore the intended operation of the emission hose path on the listed Nissan and INFINITI applications.

This part cross-references 118268J110 for the same application.