Gates EMH307 Engine Crankcase Breather Hose - Valve Cover To Intake Tube

OE-Exact Crankcase Breather Hose

The Gates EMH307 is an OE-exact engine crankcase breather hose built for crankcase ventilation and emission control service. It restores the hose path between the valve cover and intake tube on select Nissan Altima models, helping return the emission system to proper operation.

Made from rubber and formed to OE comparison standards, this Gates Emission Control Hose line focuses on fit, routing, and durability for direct replacement service. For Nissan Altima owners searching for a valve cover to intake tube emission control hose, EMH307 provides a precise service part match.

Key Features

• OE-exact replacement for crankcase ventilation and emission control routing
• Rubber construction for everyday engine-bay service conditions
• Push-in end type for direct connection at the specified ports
• Formed to a 9.75 in centerline length with 15 mm inside diameter
• Designed for the valve cover to intake tube position
• Gates EMH307 part number for easy identification

Product Details

Gates EMH307 is part of the Gates Emission Control Hose line, a product line focused on replacement hoses for crankcase ventilation and emission control systems. This hose is built to match OE specifications closely, helping maintain the intended hose routing and system performance on 2008-2010 Nissan Altima and 2012 Nissan Altima applications. If you are replacing a cracked, hardened, or leaking crankcase breather hose, this part restores the connection between the valve cover and intake tube with the correct formed shape and OE-exact comparison rating.

This part cross-references 11826JA00B for the same application.

Common Problems This Hose Can Address

• Cracked or split crankcase breather hose
• Vacuum leaks at the valve cover to intake tube connection
• Emission system flow issues caused by hose deterioration
• Oil vapor routing problems from a damaged breather line
• Improper hose fit after a previous replacement

Installation Notes and Tips

Verify the hose routing before removal so the replacement follows the original path from the valve cover to the intake tube. Inspect the mating ports for buildup, hardening, or damage before installing the new hose. Because this hose uses a push-in end type, confirm the connection seats fully and that the formed shape is not twisted during installation.

Compatible With 2008-2010 Nissan Altima, valve cover to intake tube, and 2012 Nissan Altima, valve cover to intake tube.

Quality Assurance

Gates manufactures this hose as an OE-exact replacement within its Emission Control Hose line, using high-quality materials selected for durability and service life. The EMH307 is built to restore the emission system to intended operation and performance.