HomeEmission Control > Air Injection SystemStandard Ignition AV9 Secondary Air Injection Pump Check Valve
Part #: AV9

Standard Ignition AV9 Secondary Air Injection Pump Check Valve

104 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$27.00Free 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.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Buick, Oldsmobile, Nissan, Chevrolet, Cadillac, GMC, and Pontiac, Century, Electra, 98, Cutlass Ciera, LeSabre, Regal, Riviera, 200SX, 210, 310, 720, Sentra, Stanza, Cutlass Cruiser, Monte Carlo, Skyhawk, DeVille, Fleetwood, Camaro, Caprice, El Camino, Impala, Malibu, Monza, Caballero, Cutlass, Cutlass Calais, Delta 88, Starfire, Bonneville, Catalina, Firebird, Grand LeMans, Grand Prix, LeMans, Phoenix, Sunbird, Skylark, Cutlass Salon, Omega, Grand Am, B210, and F10
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Secondary Air Injection Pump Check Valve for Select Vehicles

The Standard Ignition AV9 Secondary Air Injection Pump Check Valve is designed to maintain proper airflow in your vehicle's emission control system. Compatible with various Buick, Cadillac, Chevrolet, Nissan, Oldsmobile, and Pontiac models, this check valve ensures efficient operation of the secondary air injection pump.

  • Compatible with multiple makes including Buick, Cadillac, Chevrolet, Nissan, Oldsmobile, and Pontiac
  • Designed for hose size of 3/4 inch (19 mm)
  • Thread size: 1/2" - 14 NPT for secure installation
  • Part number AV9 for easy identification and replacement
  • Durable construction to withstand emission system demands

Product Details and Specifications

The Standard Ignition AV9 check valve is engineered to fit secondary air injection systems requiring a 3/4 inch hose connection. Its 1/2" - 14 NPT thread size allows for a secure and leak-free fit. This valve plays a critical role in preventing exhaust gases from flowing back into the air pump, protecting the pump and ensuring proper emission control. The AV9 is compatible with a wide range of vehicles, including Buick models like Century and LeSabre, Cadillac DeVille and Fleetwood, Chevrolet Camaro and Impala, Nissan 200SX and Sentra, Oldsmobile Cutlass series, and Pontiac Firebird and Grand Prix.

Common Applications and Issues Addressed

  • Prevents backflow of exhaust gases into the secondary air injection pump
  • Helps maintain proper air injection system pressure
  • Reduces risk of air pump damage due to exhaust contamination
  • Supports emission control compliance by ensuring correct air flow
  • Addresses check valve failure symptoms such as rough idle or increased emissions

Installation Notes and Tips

When installing the Standard Ignition AV9 check valve, ensure the hose size matches the 3/4 inch specification for a proper seal. Use thread sealant compatible with 1/2" - 14 NPT threads to prevent leaks. Verify the valve orientation to allow correct airflow direction. It is recommended to inspect the secondary air injection pump and related hoses for wear or damage during installation.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance in emission control systems. The AV9 check valve undergoes rigorous quality control to maintain durability and fitment accuracy. Warranty coverage details can be obtained from the product documentation or authorized distributors.

BrandStandard Ignition
Part NumberAV9
ContentsAir Pump Check Valve
Hose Size - Inches3/4
Hose Size - mmRefer to Inches
Thread Size - NPT1/2" - 14 Thread

This part fits 104 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1985BuickCenturyN/AExternal thread fitment applicable.
1985Oldsmobile983.0LV6N/A
1985Oldsmobile984.3LV6N/AExternal thread fitment applicable.
1985OldsmobileCutlass CieraN/AExternal thread fitment applicable.
1984BuickCenturyN/AExternal thread fitment applicable.
1984BuickLeSabreN/AExternal thread fitment applicable.
1984BuickRegalN/AExternal thread fitment applicable.
1984BuickRivieraN/AExternal thread fitment applicable.
1984OldsmobileCutlass CieraN/AExternal thread fitment applicable.
1983BuickCenturyN/AExternal thread fitment applicable.
1983BuickLeSabreN/AExternal thread fitment applicable.
1983BuickRegalN/AExternal thread fitment applicable.
1983BuickRivieraN/AExternal thread fitment applicable.
1983OldsmobileCutlass Ciera3.0LV6N/A
1982BuickCenturyN/AExternal thread fitment applicable.
1982BuickLeSabreN/AExternal thread fitment applicable.
1982BuickRegalN/AExternal thread fitment applicable.
1982BuickRivieraN/AExternal thread fitment applicable.
1982Nissan200SXN/A
1982Nissan210N/A
1982Nissan310N/A
1982Nissan720N/A
1982NissanSentra1.5LL4N/A
1982OldsmobileCutlass Ciera3.0LV6N/A
1982OldsmobileCutlass Cruiser4.3LV8N/A
1981BuickCenturyN/AExternal thread fitment applicable.
1981BuickLeSabreN/AExternal thread fitment applicable.
1981BuickRegalN/AExternal thread fitment applicable.
1981BuickRivieraN/AExternal thread fitment applicable.
1981ChevroletMonte CarloN/AExternal thread fitment applicable.
1981Nissan200SXN/A
1981Nissan210N/A
1981Nissan310N/A
1981Nissan720N/A
1981OldsmobileCutlass Cruiser4.3LV8N/A
1981OldsmobileCutlass Cruiser3.8LV6N/A
1980BuickCenturyN/AExternal thread fitment applicable.
1980BuickLeSabreN/AExternal thread fitment applicable.
1980BuickRegalN/AExternal thread fitment applicable.
1980BuickRivieraN/AExternal thread fitment applicable.
1980BuickSkyhawk3.8LV6N/Aw/ External Threads
1980CadillacDeVilleN/AExternal thread fitment applicable.
1980CadillacFleetwood4.1LV6N/AExternal thread fitment applicable.
1980ChevroletCamaroN/AExternal thread fitment applicable.
1980ChevroletCapriceN/AExternal thread fitment applicable.
1980ChevroletEl CaminoN/AExternal thread fitment applicable.
1980ChevroletImpalaN/AExternal thread fitment applicable.
1980ChevroletMalibu3.8LV6N/A
1980ChevroletMonte CarloN/AExternal thread fitment applicable.
1980ChevroletMonza3.8LV6N/A
1980Nissan210N/A
1980Nissan310N/A
1980Nissan720N/AExternal thread fitment applicable.
1980OldsmobileCutlass3.8LV6N/A
1980OldsmobileCutlass Calais3.8LV6N/A
1980OldsmobileCutlass Cruiser4.3LV8N/A
1980OldsmobileCutlass Cruiser3.8LV6N/A
1980OldsmobileDelta 88N/AExternal thread fitment applicable.
1980OldsmobileStarfire3.8LV6N/A
1980PontiacBonnevilleN/AExternal thread fitment applicable.
1980PontiacCatalina3.8LV6N/A
1980PontiacFirebirdN/AExternal thread fitment applicable.
1980PontiacGrand LeMansN/AExternal thread fitment applicable.
1980PontiacGrand PrixN/AExternal thread fitment applicable.
1980PontiacLeMansN/AExternal thread fitment applicable.
1980PontiacPhoenixN/AExternal thread fitment applicable.
1980PontiacSunbird3.8LV6N/A
1979BuickCenturyN/AExternal thread fitment applicable.
1979BuickLeSabreN/AExternal thread fitment applicable.
1979BuickRegalN/AExternal thread fitment applicable.
1979BuickRivieraN/AExternal thread fitment applicable.
1979BuickSkyhawk3.8LV6N/Aw/ External Threads
1979BuickSkylarkN/AExternal thread fitment applicable.
1979ChevroletEl Camino3.8LV6N/A
1979ChevroletMalibu3.3LV6N/A
1979ChevroletMalibu3.8LV6N/A
1979ChevroletMonte Carlo3.8LV6N/A
1979ChevroletMonza3.8LV6N/A
1979Nissan210N/A
1979Nissan310N/A
1979OldsmobileCutlass Calais3.8LV6N/A
1979OldsmobileCutlass Salon3.8LV6N/A
1979OldsmobileDelta 88N/AExternal thread fitment applicable.
1979OldsmobileOmega3.8LV6N/A
1979OldsmobileStarfire3.8LV6N/A
1979PontiacCatalinaN/AExternal thread fitment applicable.
1979PontiacFirebirdN/AExternal thread fitment applicable.
1979PontiacGrand Am3.8LV6N/A
1979PontiacGrand LeMans3.8LV6N/A
1979PontiacGrand PrixN/AExternal thread fitment applicable.
1979PontiacLeMans3.8LV6N/A
1979PontiacPhoenixN/AExternal thread fitment applicable.
1979PontiacSunbird3.8LV6N/A
1978BuickCenturyN/AExternal thread fitment applicable.
1978BuickLeSabreN/AExternal thread fitment applicable.
1978BuickRegalN/AExternal thread fitment applicable.
1978BuickSkyhawk3.8LV6N/Aw/ External Threads
1978BuickSkylarkN/AExternal thread fitment applicable.
1978OldsmobileCutlass Calais3.8LV6N/A
1978OldsmobileCutlass Salon3.8LV6N/A
1978OldsmobileDelta 883.8LV6GASN/A
1978OldsmobileOmega3.8LV6N/A
1978OldsmobileStarfire3.8LV6N/A
1977BuickCenturyN/AExternal thread fitment applicable.

* 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:

1233253214830H720017004174-177191103701A30022-2900273-1512779-2931CV10DVVB10034

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