Dorman 911-985 Secondary Air Injection Check Valve

Reliable Secondary Air Injection Check Valve for Volvo Vehicles

The Dorman 911-985 Secondary Air Injection Check Valve is engineered to maintain optimal emission control in select Volvo models. Designed with durable cast aluminum and a diaphragm valve type, this component ensures consistent performance under varying operating conditions.

• Constructed from cast aluminum for strength and corrosion resistance
• Gray finish complements engine bay components
• Inlet size: 0.688 inches; outlet size: 0.588 inches for precise fitment
• Maximum pressure rating of 55 psi supports reliable operation
• Diaphragm valve type designed for effective air flow control
• Operates within a temperature range of -28.8°C to 149°C
• Includes one secondary air injection check valve and one gasket for installation

Durable Design and Precise Fitment for Volvo Emission Systems

This secondary air injection check valve is specifically compatible with Volvo models including the 850, 960, C70, S70, S90, V70, and V90. The cast aluminum construction provides durability and resistance to heat and corrosion, essential for emission control components exposed to harsh engine environments. The diaphragm valve type ensures proper one-way air flow, preventing exhaust gases from entering the air injection system. With inlet and outlet sizes tailored for these Volvo models, the Dorman 911-985 offers a precise fit that supports efficient secondary air injection system operation.

Purpose and Common Issues Addressed

• Prevents backflow of exhaust gases into the air injection system
• Maintains proper air flow to reduce harmful emissions
• Helps resolve check engine light codes related to secondary air injection
• Supports compliance with emission regulations by ensuring system integrity
• Reduces potential damage to air injection system components

Installation Notes and Tips

• Ensure the engine is cool before installation to avoid injury
• Use the included gasket to prevent air leaks and ensure a secure seal
• Verify inlet and outlet hose sizes match the valve specifications (0.688 in inlet, 0.588 in outlet)
• Inspect surrounding components for wear or damage during replacement
• Follow vehicle-specific service manual instructions for removal and installation

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 911-985 secondary air injection check valve undergoes rigorous quality control to ensure durability and reliable performance in Volvo emission control systems. This part is backed by Dorman's limited warranty, providing coverage against defects in material and workmanship under normal use.