Gates EMH203 Engine Crankcase Breather Hose - PCV Valve To Intake

Gates EMH203 Crankcase Breather Hose

The Gates EMH203 is an OE-exact engine crankcase breather hose for emission control service. Built from plastic and rubber, it restores the crankcase ventilation path between the PCV valve and intake on supported Buick, Chevrolet, Oldsmobile, and Pontiac applications.

Gates Emission Control Hose products are built for direct replacement use, with OE-style dimensions and end design to match the original routing and connection points. The EMH203 is a practical choice when replacing a cracked, hardened, or leaking PCV hose on vehicles such as the Chevrolet Impala, Pontiac Grand Prix, and Buick Century.

• OE Exact comparison rating for direct-fit replacement
• Plastic and rubber construction for emission hose service
• Push-in end type for factory-style connection
• Centerline length: 15.25 in. / 387 mm
• Inside diameter options listed at .25, .31, .33 in. / 6, 8, and 8.5 mm
• Fits the PCV Valve To Intake position
• Cross-reference: Dorman - HELP 46021, 46021CD

Detailed Application Coverage

Compatible With 1999-2005 Buick Century, PCV Valve To Intake; 2002-2005 Buick Rendezvous, PCV Valve To Intake; 2000-2005 Chevrolet Impala, PCV Valve To Intake; 2000-2005 Chevrolet Monte Carlo, PCV Valve To Intake; 2002-2005 Pontiac Aztek, PCV Valve To Intake; 2000-2005 Pontiac Grand Am, PCV Valve To Intake; 2003-2005 Pontiac Montana, PCV Valve To Intake; 1999-2001 Pontiac Montana, PCV Valve To Intake; 2000-2004 Oldsmobile Alero, PCV Valve To Intake; 1999-2004 Oldsmobile Silhouette, PCV Valve To Intake; 2000-2003 Chevrolet Malibu, PCV Valve To Intake; 2000-2003 Pontiac Grand Prix, PCV Valve To Intake; 2000-2001 Chevrolet Lumina, PCV Valve To Intake.

What This Hose Helps Address

• Cracked or brittle PCV breather hose material
• Vacuum leaks at the crankcase ventilation line
• Improper crankcase ventilation flow between PCV valve and intake
• Emission system faults related to deteriorated hose routing
• Idle quality issues caused by air leaks in the emission hose path

Installation Notes

Verify hose routing, end style, and centerline length against the original part before installation. This EMH203 uses a push-in connection and is intended for the PCV valve to intake hose location. Inspect adjoining fittings and replace any damaged connectors or brittle vacuum components during service.

Quality Assurance

Gates builds this emission control hose as an OE-exact replacement using durable materials selected for service life in crankcase ventilation applications. The EMH203 is engineered to restore original emission hose function and maintain factory-style fitment on listed vehicles.