DELPHI Lambda zonde ES21155-12B1

Compatible with SEAT LEON ST (5F8) , VW GOLF VII (5G1, BQ1, BE1, BE2) , SEAT LEON (5F1) Show more info
This DELPHI Lambda zonde (ES21155-12B1) is designed for optimal engine performance and fuel efficiency. Ensure your vehicle's emissions are within regulation with this reliable component.
60.24 EUR
inc. VAT 21%
In stock 3
Delivery 1 day (15.05.2026)
PN ES21155-12B1
Make DELPHI
EAN 5012759576304

The DELPHI Lambda zonde, part number ES21155-12B1, is a critical component for modern vehicle emission control systems. It measures the oxygen content in the exhaust gases, providing essential data to the engine control unit (ECU). By accurately monitoring oxygen levels, the ECU can precisely adjust the air-fuel mixture. This precise adjustment is vital for maximizing fuel combustion efficiency, reducing harmful emissions, and maintaining optimal engine performance. A properly functioning Lambda zonde contributes significantly to meeting environmental standards. This specific Lambda zonde from DELPHI is engineered for durability and consistent performance. Its robust construction ensures it can withstand the harsh conditions of the exhaust system, providing reliable operation over its service life. Replacing a faulty Lambda zonde can resolve issues such as poor fuel economy, rough idling, and illuminated check engine lights.

  • Brand: DELPHI
  • Part Code: ES21155-12B1
  • Type: Lambda zonde (Oxygen Sensor)
  • Ensures optimal air-fuel mixture
  • Improves fuel efficiency
  • Reduces harmful emissions
  • Supports efficient engine performance
  • Durable construction for long service life
Cable length [mm]
475
Oxygen sensor
Planar type lambda sensor
Oxygen sensor
with heating
  • SEAT
    • LEON ST (5F8)
      • 1.2 TSI (63kW/86PS)
      • 1.2 TSI (81kW/110PS)
    • LEON (5F1)
      • 1.2 TSI (63kW/86PS)
      • 1.2 TSI (81kW/110PS)
    • LEON SC (5F5)
      • 1.2 TSI (63kW/86PS)
      • 1.2 TSI (81kW/110PS)
  • VW
    • GOLF VII (5G1, BQ1, BE1, BE2)
      • 1.2 TSI (63kW/86PS)
      • 1.2 TSI (81kW/110PS)
    • GOLF VII Variant (BA5, BV5)
      • 1.2 TSI (63kW/86PS)
      • 1.2 TSI (81kW/110PS)
    • GOLF SPORTSVAN VII (AM1, AN1)
      • 1.2 TSI (81kW/110PS)
      • 1.2 TSI (63kW/86PS)
    • TOURAN (5T1)
      • 1.2 TSI (81kW/110PS)
  • SKODA
    • OCTAVIA III (5E3, NL3, NR3)
      • 1.2 TSI (63kW/86PS)
      • 1.2 TSI (77kW/105PS)
      • 1.2 TSI (81kW/110PS)
    • OCTAVIA III Combi (5E5, 5E6)
      • 1.2 TSI (63kW/86PS)
      • 1.2 TSI (77kW/105PS)
      • 1.2 TSI (81kW/110PS)
  • AUDI
    • A3 (8V1, 8VK)
      • 1.2 TFSI (81kW/110PS)
    • A3 Limousine (8VS, 8VM)
      • 1.2 TFSI (81kW/110PS)
    • A3 Sportback (8VA, 8VF)
      • 1.2 TFSI (81kW/110PS)
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