Dorman 911-458 Vapor Canister Purge Valve

Vapor Canister Purge Valve for OE Replacement

Dorman 911-458 is a direct replacement vapor canister purge valve for the evaporative emissions system. It is built for a precise fit and plug-and-play installation, with the valve function needed to help the vehicle meet emissions requirements.

Compatible With 2003 Acura MDX and 2003 Honda Accord applications, this purge valve is a practical OE-style solution when the original valve is no longer sealing or responding correctly. The Dorman 911-458 part number is also useful when searching for a direct-fit replacement for these specific vehicles.

Key Features

• Direct replacement vapor canister purge valve for the evaporative control system
• Plastic housing with a rectangular connector shape
• 2-terminal electrical connection
• 1 vacuum port with 2 vacuum connectors
• Mounting layout includes 3 mount holes with 0.25 in mount hole diameter
• Compact 2.5 in length for OE-style packaging
• Connector hose inside diameter: 0.375 in
• Inlet inside diameter: 0.25 in
• Port 1 and Port 2 outside diameter: 0.375 in

Detailed Description

The Dorman 911-458 vapor canister purge valve is engineered as a direct replacement for the original equipment purge valve used in the evaporative emissions system. On 2003 Acura MDX and 2003 Honda Accord models, the valve helps control fuel vapor flow from the charcoal canister into the engine intake under the proper operating conditions. This supports emissions system function and helps the vehicle remain within government-required evaporative emissions standards. The part number 911-458 is a straightforward match for buyers looking for a replacement purge valve with OE-style dimensions and connector layout.

This part cross-references Standard Ignition CP497 for the same application.

Common Problems This Part Can Address

• Check engine light related to evaporative emissions system faults
• Hard starting after refueling
• Fuel vapor odor around the vehicle
• Poor purge control from a sticking or leaking valve
• Emissions test failure tied to EVAP system performance

Installation Notes and Tips

Verify the connector shape, hose diameters, and mounting points against the original valve before installation. The Dorman 911-458 uses a rectangular connector, 2 terminals, and 3 mounting holes, so matching the OE layout is important for a proper swap. Confirm hose routing and vacuum connections during installation to prevent leaks and restore correct purge operation.

Quality Assurance

Dorman positions this purge valve as a direct OE replacement built for fitment accuracy and plug-and-play installation. It is intended to restore evaporative emissions system function on the listed Acura and Honda applications while meeting the requirements of the original emissions control design.