Standard Ignition AV73 Secondary Air Injection Pump Check Valve

Secondary Air Injection Check Valve for Toyota

The Standard Ignition AV73 is a secondary air injection pump check valve built to OE exact grade standards. It uses an oval connector shape, a blade terminal type, and a 1-inch (22 mm) hose size for a direct-style service replacement on select Toyota air injection systems.

Compatible With 2011-2024 Toyota applications including 2012-2024 Toyota 4Runner, 2012-2014 Toyota FJ Cruiser, and 2011-2014 Toyota Tundra. The AV73 is a practical choice when servicing an air cleaner check valve on a Toyota 4Runner or replacing a driver-side valve on a Toyota Tundra.

Key Features

• Standard Ignition AV73 secondary air injection pump check valve
• OE Exact grade type for factory-style fit and function
• Oval connector shape for the specified electrical connection
• Blade terminal type
• 1-inch hose size, also listed as 22 mm
• Used in select Toyota 4Runner, FJ Cruiser, and Tundra applications

Detailed Description

This check valve is part of the emission control air injection system and helps maintain proper one-way flow in the secondary air circuit. Standard Ignition AV73 is listed for 2012-2024 Toyota 4Runner air cleaner check valve applications, 2012-2014 Toyota FJ Cruiser air cleaner check valve applications, and 2011-2014 Toyota Tundra driver-side applications. If you are searching for a Toyota 4Runner secondary air injection pump check valve or a Toyota Tundra emission control valve replacement, AV73 provides the specified connector, terminal, and hose dimensions for the application.

This part cross-references 2-988 and CV104 for the same application.

What It Helps Address

• Secondary air system flow restriction caused by a worn check valve
• Emission control fault codes related to air injection performance
• Air leakage through a valve that no longer seals properly
• Driveability issues tied to secondary air system malfunction
• Service replacement needs on Toyota 4Runner, FJ Cruiser, and Tundra air injection systems

Installation Notes and Tips

Verify the connector shape, blade terminal style, and 1-inch hose size before installation. Confirm the vehicle application by year, model, and position: Fits 2012-2024 Toyota 4Runner, N/A; Fits 2012-2014 Toyota FJ Cruiser, N/A; Fits 2011-2014 Toyota Tundra, Driver Side. Inspect adjoining hoses and electrical connections during service to ensure the replacement valve seats correctly in the air injection system.

Quality Assurance

Standard Ignition supplies this AV73 valve as an OE Exact grade replacement part for select Toyota emission control applications.