Gates EMH143 Engine Crankcase Breather Hose - PCV Valve To Intake

OE-Exact Crankcase Breather Hose

Gates EMH143 is an OE-exact engine crankcase breather hose for the emission control and crankcase ventilation system. It is built from plastic and rubber with molded push-in ends to restore proper routing between the PCV valve and intake on supported GM trucks, vans, and SUVs.

For Chevrolet Express, Silverado, Astro, Blazer, S10, and GMC Savana, Sierra, Safari, Jimmy, and Sonoma applications, this hose is shaped to match the original layout and dimensions for a direct replacement.

Key Features

• OE Exact replacement for crankcase ventilation and emission control service
• Plastic and rubber construction for durability and service life
• Molded hose design with push-in ends on both sides
• Centerline length: 8.125 in. (206 mm)
• Inside diameters: 0.35 in. (9 mm) and 0.31 in. (8 mm)
• Fits the PCV valve to intake hose route used on listed applications
• Gates EMH143 part number for catalog and service matching

Product Details

Gates Emission Control Hose EMH143 is engineered as a direct-fit crankcase ventilation hose for vehicles that use a PCV valve to intake connection. The molded shape, OE-exact dimensions, and push-in end design help maintain the original hose path and connection style, which is important for proper emission system operation. This part cross-references Dorman - HELP 46024 for the same application.

Compatible With 1996-2007 Chevrolet Express 1500, PCV Valve To Intake; 1996-2006 Chevrolet Express 2500, PCV Valve To Intake; 1999-2006 Chevrolet Silverado 1500, PCV Valve To Intake; 2007 Chevrolet Silverado 1500 Classic, PCV Valve To Intake; 1996-2005 Chevrolet Astro, PCV Valve To Intake; 1996-2005 Chevrolet Blazer, PCV Valve To Intake; 1996-2004 Chevrolet S10, PCV Valve To Intake; and additional listed GMC and Oldsmobile applications. Gates EMH143 is also listed for GMC Sierra 1500 and GMC Savana models in the same PCV-to-intake position.

What It Helps Fix

• Cracked or brittle crankcase breather hose
• Vacuum leaks in the PCV-to-intake hose path
• Emission system routing problems caused by a damaged hose
• Rough idle or drivability issues related to air leaks
• Oil vapor transfer issues from a deteriorated ventilation hose

Installation Notes and Tips

Confirm the hose route, end style, and inside diameters before installation. This hose uses push-in ends and is molded to match the original PCV valve to intake layout, so proper alignment matters during replacement. Inspect nearby fittings and the PCV valve for wear or contamination before installing the new hose.

Quality Assurance

Gates builds this emission control hose from high-quality materials and designs it to restore the emission system to intended operation and performance. The OE-exact construction supports a direct replacement approach for service on Chevrolet and GMC crankcase ventilation systems.