Gates EMH700 Engine Crankcase Breather Hose - Oil Separator To PCV Valve

OE-Exact Crankcase Breather Hose

Gates EMH700 is an OE-exact engine crankcase breather hose for the emission control system. It is built from rubber with a push-in end type and a protective sleeve to help restore proper crankcase ventilation routing on select GM trucks.

Compatible with 2011-2016 Chevrolet Silverado 2500 HD and Silverado 3500 HD, as well as 2011-2016 GMC Sierra 2500 HD and Sierra 3500 HD, this Gates emission control hose is made for the oil separator to PCV valve connection. The EMH700 follows the original hose layout and dimensions for a direct replacement on the listed applications.

Key Features

• OE-exact replacement for crankcase ventilation and emission control routing
• Rubber construction for service in engine-bay conditions
• Inside diameter: 0.6 in. (15 mm)
• Centerline length: 22 in. (559 mm)
• Push-in end type for the specified factory connection
• Protective sleeve included for added hose protection
• Brand line: Gates Emission Control Hose

Detailed Description

Gates EMH700 is engineered as a direct-fit emission control hose for the crankcase ventilation system. It is designed to replace the original oil separator to PCV valve hose on the listed Chevrolet Silverado HD and GMC Sierra HD models, helping maintain the intended flow path within the engine’s emission system. The OE-exact grade and factory-style dimensions support accurate routing and fitment on the specified vehicles. This part cross-references GM service numbers 12632367 and 12639203 for the same application.

What It Helps Address

• Cracked or deteriorated crankcase breather hose
• Oil separator to PCV valve hose leakage
• Improper crankcase ventilation routing
• Emission system performance issues caused by hose wear
• Vacuum-related drivability concerns tied to hose failure

Installation Notes and Tips

• Verify the vehicle year, make, model, and hose routing before installation.
• Inspect the oil separator, PCV valve, and adjoining connections for wear or damage.
• Confirm the push-in ends seat fully at the factory connection points.
• Check hose routing for clearance from heat sources and moving components.

Quality Assurance

Gates manufactures this hose as an OE-exact replacement using high-quality materials for durability and service life. EMH700 is built to restore the emission system to proper operation on the listed GM truck applications.