Standard Ignition AV1 Secondary Air Injection Pump Check Valve

Secondary Air Injection Check Valve for Ford Applications

Standard Ignition AV1 is a secondary air injection pump check valve built for emission control systems that need one-way flow and reliable sealing under high exhaust temperatures. It is a direct-fit style service part for a wide range of Ford and Mercury vehicles, including Ford F-150, F-250, F-350, Bronco, and Econoline applications.

The AV1 uses a fluoroelastomer construction to handle elevated exhaust heat, while end-of-line testing helps verify flow performance and low leak characteristics. Standard Ignition AV1 is a practical replacement when servicing a secondary air injection system on older Ford trucks and vans.

• Fluoroelastomer valve material for high-temperature exhaust environments
• One-way flow design for proper secondary air injection operation
• 100% end-of-line tested for flow and leak performance
• Fits many Ford and Mercury emission-control applications from 1974-1996
• Hose size: 1.24 in. Refer to inches for metric sizing

Fitment and Cross-Reference

Compatible With select 1974-1996 Ford Bronco, E-100/E-150/E-250/E-350 Econoline and Club Wagon, F-100/F-150/F-250/F-350, Mustang, Thunderbird, LTD, Fairmont, and Mercury Cougar, Capri, Marquis, Monarch, Montego, Zephyr, and Grand Marquis applications. Fits 1988-1996 Ford Bronco, N/A; Fits 1988-1996 Ford E-150 Econoline, N/A; Fits 1995-1996 Ford F-150, N/A; Fits 1988-1993 Ford F-250, N/A; Fits 1988-1993 Ford F-350, N/A; Fits 1974-1976 Mercury Marquis, N/A.

This part cross-references Four Seasons 55314 for the same application.

What This Part Helps Address

• Secondary air injection check valve leakage
• Backflow in the air injection system
• Heat-related valve deterioration
• Emission system performance faults tied to poor one-way flow
• Service replacement needs on aging Ford and Mercury emission systems

Installation Notes and Quality Assurance

Verify hose size, thread style, and vehicle-specific notes before installation, especially on Ford truck and van applications that use external threads, hose nipples, or upstream placement. Confirm the original part configuration against the vehicle’s emission setup before ordering. Standard Ignition states that this valve undergoes 100% end-of-line testing to confirm proper flow and low leak performance, and the company maintains quality control from component production through finished assembly.