DELPHI Lambda zonde ES21171-12B1

Compatible with FORD FOCUS III , FORD FOCUS III Turnier , FORD FOCUS III Sedans Show more info
This DELPHI Lambda zonde (oxygen sensor) is designed to monitor exhaust gas oxygen content. It helps optimize fuel combustion for improved efficiency and reduced emissions.
55.06 EUR
inc. VAT 21%
In stock 13
Delivery 1 day (14.05.2026)
PN ES21171-12B1
Make DELPHI
EAN 5012759576465

The DELPHI Lambda zonde, part number ES21171-12B1, is a critical component for modern engine management systems. It precisely measures the amount of oxygen present in the exhaust gases leaving the engine. By accurately detecting oxygen levels, the Lambda zonde provides vital data to the vehicle's Engine Control Unit (ECU). This information allows the ECU to make real-time adjustments to the air-fuel mixture. Maintaining the correct air-fuel ratio is essential for efficient fuel combustion, which in turn minimizes harmful emissions and maximizes fuel economy. This sensor is engineered for durability and reliable performance, ensuring consistent operation under demanding engine conditions. Its precise readings contribute to smoother engine operation and help prevent issues such as poor acceleration, increased fuel consumption, and check engine light illumination.

  • Direct fit for specified vehicle applications
  • Monitors oxygen content in exhaust gases
  • Optimizes air-fuel mixture for efficiency
  • Helps reduce harmful emissions
  • Contributes to improved fuel economy
  • Ensures smooth engine performance
  • Durable construction for long service life
  • Reliable data for engine control unit
Cable length [mm]
670
Oxygen sensor
Wideband lambda sensor
Oxygen sensor
with heating
  • FORD
    • FOCUS III
      • 1.0 EcoBoost (92kW/125PS)
      • 1.0 EcoBoost (74kW/100PS)
      • 2.3 RS AWD (257kW/350PS)
      • 1.0 EcoBoost (103kW/140PS)
    • FOCUS III Turnier
      • 1.0 EcoBoost (74kW/100PS)
      • 1.0 EcoBoost (92kW/125PS)
      • 1.0 EcoBoost (103kW/140PS)
    • FOCUS III Sedans
      • 1.0 EcoBoost (74kW/100PS)
      • 1.0 EcoBoost (92kW/125PS)
      • 1.0 EcoBoost (103kW/140PS)
    • TOURNEO CONNECT / GRAND TOURNEO CONNECT V408 Lielas ietilpīb
      • 1.0 EcoBoost (74kW/100PS)
    • TRANSIT CONNECT V408 Furgons/minivens
      • 1.0 EcoBoost (74kW/100PS)
      • 1.0 Flexifuel (74kW/100PS)
    • C-MAX II (DXA/CB7, DXA/CEU)
      • 1.0 EcoBoost (74kW/100PS)
      • 1.0 EcoBoost (92kW/125PS)
      • 1.0 EcoBoost (74kW/101PS)
      • 1.0 EcoBoost (92kW/125PS)
    • KUGA II (DM2)
      • 1.5 EcoBoost (110kW/150PS)
      • 1.5 EcoBoost 4x4 (134kW/182PS)
      • 2.0 EcoBoost 4x4 (178kW/242PS)
      • 2.0 EcoBoost 4x4 (169kW/230PS)
      • 1.5 EcoBoost 4x4 (110kW/150PS)
    • KUGA II VAN
      • 1.5 EcoBoost 4x4 (134kW/182PS)
    • C-MAX II Van
      • 1.0 EcoBoost (74kW/100PS)
      • 1.0 EcoBoost (92kW/125PS)
    • PUMA (J2K, CF7)
      • 1.0 EcoBoost (92kW/125PS)
      • 1.0 EcoBoost mHEV (92kW/125PS)
      • 1.0 EcoBoost mHEV (114kW/155PS)
      • 1.0 EcoBoost (70kW/95PS)
      • 1.0 Flexifuel (92kW/125PS)
      • 1.0 ST EcoBoost mHEV (125kW/170PS)
    • FIESTA VII (HJ, HF)
      • 1.0 EcoBoost (70kW/95PS)
      • 1.0 EcoBoost mHEV (92kW/125PS)
      • 1.0 EcoBoost mHEV (114kW/155PS)
      • 1.0 EcoBoost mHEV Active (114kW/155PS)
      • 1.0 EcoBoost mHEV Active (92kW/125PS)
      • 1.0 EcoBoost (92kW/125PS)
    • FIESTA VII Van
      • 1.0 EcoBoost (70kW/95PS)
      • 1.0 EcoBoost mHEV (92kW/125PS)
      • 1.0 EcoBoost Flex (70kW/95PS)
    • GRAND C-MAX (DXA/CB7, DXA/CEU)
      • 1.0 EcoBoost (74kW/101PS)
      • 1.0 EcoBoost (92kW/125PS)
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