Keep the secondary air injection system moving air one way and shield the air pump from hot exhaust backflow with the Standard Ignition Secondary Air Injection Pump Check Valve / Air Cleaner Check Valve (AV20). This emission component is a direct-fit replacement for the 1981-1983 and 1985 Ford Escort, the 1982-1985 Ford EXP, the 1982-1983 Mercury LN7, and the 1981-1985 Mercury Lynx, all with the L4-1.6L engine. It threads into the air injection plumbing to permit fresh air into the exhaust stream while blocking exhaust gases from traveling back toward the pump.
Made with quality control maintained throughout the manufacturing process. Country of origin: Mexico.
Interchange: CV23 · DVVB10047 · 2-977 · 2977 · E1EE9A487CA · E1EE9A487CC · E1EE9A487CD · E1FZ9A487C · E1FZ9A487F · E3EE9A487FA · E3FZ9A487F · 12351029
Manufacturer part number AV20
This part cross-references / interchanges with the following part numbers:
What does this check valve do?
It's a one-way check valve for the secondary air injection system. It's designed to let fresh air into the exhaust while blocking hot exhaust gases from flowing back toward the air injection pump.
Which vehicles does the AV20 fit?
It's a direct-fit replacement for the 1981-1983 and 1985 Ford Escort, 1982-1985 Ford EXP, 1982-1983 Mercury LN7, and 1981-1985 Mercury Lynx, all with the L4-1.6L engine. See the Buyer's Guide tab to confirm.
What connection sizes does it use?
It has a 3/4-inch hose size and a 3/8-18 NPT thread that threads into the port.
Is the air injection pump or hoses included?
No. The package contents are the valve only, so the air pump and hoses are not included.
What are signs the original valve may need replacing?
Signs may include exhaust gases leaking back toward the air pump or restricted airflow. Diagnose the cause first, since other components can produce similar symptoms.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
