Dorman 911-490 Vapor Canister Purge Valve

Overview of Dorman Vapor Canister Purge Valve 911-490

The Dorman 911-490 vapor canister purge valve is designed to support the evaporative emission control system in select Mazda, Scion, and Toyota vehicles. This essential component helps regulate fuel vapor flow, contributing to efficient engine performance and reduced emissions.

• Connector hose inside diameter: 0.315 inches
• Single elliptical connector for secure fit
• Durable plastic housing material
• One male terminal for electrical connection
• Inlet inside diameter of 0.213 inches
• Compact length of 2.57 inches
• One mounting hole with 0.292 inch diameter (mounting hardware not included)
• Two ports with outside diameters of 0.315 and 0.312 inches

Technical Details and Compatibility

The Dorman 911-490 vapor canister purge valve features a plastic housing designed for durability and resistance to fuel vapors. It includes one elliptical connector hose with a 0.315-inch inside diameter, ensuring a precise fit for the vapor lines. The valve has two ports, sized at 0.315 and 0.312 inches outside diameter, facilitating proper vapor flow control. Its compact length of 2.57 inches allows for easy integration into the evaporative system. This part is compatible with various Mazda models such as the Mazda3, CX-7, and MX-5 Miata, as well as Scion tC and Toyota RAV4 vehicles, making it a reliable replacement option for these applications. The single male terminal supports straightforward electrical connection, while the mounting hole allows secure installation (mounting hardware not included).

Purpose and Common Issues Addressed

• Controls fuel vapor purge from the charcoal canister to the intake manifold
• Prevents fuel vapor leaks that can trigger the check engine light
• Helps maintain proper engine idle and performance by regulating vapor flow
• Reduces evaporative emissions to comply with environmental standards
• Resolves issues related to rough idling, poor fuel economy, and failed emissions tests

Installation Notes and Tips

When installing the Dorman 911-490 vapor canister purge valve, ensure the elliptical connector hose fits securely over the 0.315-inch diameter port. Verify the orientation of the valve to match the original part for proper vapor flow. Use the single mounting hole to secure the valve firmly in place; note that mounting hardware is not included and may need to be reused or sourced separately. Confirm the electrical connection is made to the male terminal to maintain system functionality. It is recommended to inspect related hoses and connectors for wear or damage during installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance for emission control systems. The 911-490 vapor canister purge valve undergoes quality testing to ensure durability and proper operation within the evaporative system. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.