Secondary Air Injection System Valve

Compatible with SEAT IBIZA III (6L1) , VW POLO IV (9N_, 9A_) ,
This valve controls the flow of secondary air into the exhaust system to reduce emissions. Ensure optimal engine performance and compliance with environmental standards.
35.74 EUR
inc. VAT 21%
In stock 1
Delivery 1 day (18.05.2026)
PN 121 690
Make TOPRAN

The Secondary Air Injection System (SAIS) Valve plays a crucial role in modern vehicle emissions control. By introducing fresh air into the exhaust stream, it aids in the complete combustion of unburned fuel, particularly during cold starts. This process significantly reduces the emission of harmful pollutants like hydrocarbons and carbon monoxide. This TOPRAN valve is designed to meet the specific requirements of your vehicle's SAIS. A properly functioning valve ensures that the system operates efficiently, contributing to cleaner exhaust gases and helping your vehicle pass emissions tests. Regular checks and timely replacement of SAIS components can prevent potential engine performance issues and costly repairs. Symptoms of a faulty SAIS valve can include a check engine light, rough idling, or increased emissions. Replacing a malfunctioning valve with a reliable part like this TOPRAN unit will restore the proper function of your emissions system.

  • Direct replacement for the original secondary air injection system valve.
  • Helps reduce harmful exhaust emissions.
  • Ensures proper air flow for efficient combustion.
  • Designed for reliable performance and durability.
  • Restores optimal function of the secondary air injection system.
  • Facilitates compliance with emissions regulations.
Valve type
Check valve
Valve type
Shut-off valve
Operating mode
pneumatic
Additional article/Additional information
with gasket
Housing material
Aluminum
Type of fastening
Flap fastener
Number of mounting holes
2
Flange hole diameter [mm]
15,1
Thread size
M 6
Thread pitch [mm]
"1"
  • SEAT
    • IBIZA III (6L1)
      • 1.8 T Cupra R (132kW/180PS)
      • 1.8 T FR (110kW/150PS)
  • VW
    • POLO IV (9N_, 9A_)
      • 1.8 GTI (110kW/150PS)
      • 1.8 GTi Cup Edition (132kW/180PS)
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