HomeStandard Ignition AV21 Secondary Air Injection Pump Check Valve
Part #: AV21

Standard Ignition AV21 Secondary Air Injection Pump Check Valve

5 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$71.73Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
Out of Stock
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chrysler and Dodge, LeBaron, New Yorker, Town & Country, 400, 600, and Aries
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Standard Ignition Secondary Air Injection Pump Check Valve

The Standard Ignition AV21 Secondary Air Injection Pump Check Valve is designed to maintain proper air flow within the emission control system of select Chrysler and Dodge vehicles. This valve ensures efficient operation of the secondary air injection pump, contributing to reduced emissions and improved engine performance.

  • Compatible with Chrysler and Dodge models including 600, Aries, LeBaron, New Yorker, and Town & Country
  • Valve content designed for durability and reliable function
  • 3/4 inch hose size for precise fitment
  • 7/8" - 18 NPT thread size for secure installation

Product Specifications and Attributes

The AV21 check valve features a 3/4 inch hose size, which corresponds to approximately 19 mm, ensuring compatibility with the secondary air injection system hoses on specified Chrysler and Dodge vehicles. The valve includes a 7/8" - 18 NPT thread size, providing a secure and leak-resistant connection within the air injection system. This part is engineered to regulate air flow from the secondary air injection pump, preventing backflow and maintaining system integrity.

Application and Vehicle Compatibility

This Standard Ignition check valve is compatible with a range of Chrysler and Dodge models, including the Chrysler 600, Aries, LeBaron, New Yorker, and Town & Country. It is specifically designed to fit the secondary air injection systems in these vehicles, ensuring proper emission control function and compliance with environmental standards.

Common Issues Addressed by the AV21 Check Valve

  • Prevents backflow of exhaust gases into the secondary air injection pump
  • Helps reduce emissions by maintaining proper air injection system operation
  • Eliminates air leaks that can cause engine performance issues
  • Prevents damage to the secondary air injection pump caused by reverse flow
  • Supports smooth engine start-up and warm-up phases by regulating air flow

Installation Notes and Tips

When installing the Standard Ignition AV21 check valve, ensure the hose size matches the 3/4 inch specification for a proper seal. Use the 7/8" - 18 NPT thread size to securely fasten the valve in place, avoiding overtightening which can damage threads. It is recommended to inspect the surrounding hoses and connections for wear or damage during installation to maintain system integrity.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing reliable performance for emission control systems. The AV21 check valve undergoes rigorous quality control to ensure durability and proper function. Warranty coverage details can be obtained from the product documentation or Standard Ignition directly, supporting confidence in the part's longevity and fitment.

BrandStandard Ignition
Part NumberAV21
ContentsValve
Hose Size - Inches3/4
Hose Size - mmRefer to Inches
Thread Size - NPT7/8" - 18

This part fits 5 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1983ChryslerLeBaron2.2LL4N/ATo Catalytic Converter
1983ChryslerNew Yorker2.2LL4N/ATo Catalytic Converter
1983ChryslerTown & Country2.2LL4N/ATo Catalytic Converter
1983Dodge6002.2LL4N/ATo Catalytic Converter
1983DodgeAries2.2LL4N/ATo Catalytic Converter

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

17017174-2271A30102-29139214-1159427581273-1514779-2936CV37DVVE40002TX427

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.