DELPHI NOx Sensor, NOx Catalyst

Compatible with MERCEDES-BENZ R-CLASS (W251, V251) , MERCEDES-BENZ S-CLASS (W221, V221) , MERCEDES-BENZ M-CLASS (W166) Show more info
High-quality NOx sensor and catalyst designed for optimal emissions control and engine performance.
233.37 EUR
inc. VAT 21%
In stock 7
Delivery 1 day (15.05.2026)
PN ANS1043-12B1
Make DELPHI
EAN 5012759601280

This DELPHI NOx sensor and catalyst assembly (part code ANS1043-12B1) is engineered to precisely monitor and reduce nitrogen oxide emissions from your vehicle's exhaust system. By accurately measuring NOx levels, this component plays a crucial role in maintaining compliance with environmental regulations and ensuring your engine operates efficiently. The integrated catalyst further aids in converting harmful NOx gases into less harmful substances. Crafted with durable materials and advanced technology, this DELPHI unit offers reliable performance and longevity. It is designed to meet stringent quality standards, providing a dependable solution for your vehicle's emissions control needs.

  • Direct fit for specified applications
  • Ensures accurate NOx level monitoring
  • Contributes to efficient emissions reduction
  • Durable construction for extended service life
  • Meets stringent OEM quality standards
  • Helps maintain optimal engine performance
  • Supports compliance with emissions regulations
Cable length [mm]
590
Number of pin contacts
5
Thread size
M20*1.5
Plug connector housing shape
Oval
  • MERCEDES-BENZ
    • R-CLASS (W251, V251)
      • R 350 CDI 4-matic (251.023, 251.123) (195kW/265PS)
      • R 320 CDI 4-matic (251.022, 251.122) (165kW/224PS)
      • R 280 CDI 4-matic (251.020) (140kW/190PS)
      • R 280 CDI (251.121, 251.026, 251.126) (140kW/190PS)
      • R 300 CDI (251.021, 251.121, 251.026, 251.126) (140kW/190PS)
      • R 300 CDI 4-matic (251.020) (140kW/190PS)
      • R 350 CDI 4-matic (251.022, 251.122) (165kW/224PS)
    • S-CLASS (W221, V221)
      • S 350 BlueTec (221.026, 221.126) (190kW/258PS)
      • S 350 CDI (221.022, 221.122) (173kW/235PS)
      • S 320 CDI (221.022, 221.122) (173kW/235PS)
      • S 320 CDI 4-matic (221.080, 221.180) (173kW/235PS)
      • S 320 CDI 4-matic (221.080, 221.180) (155kW/211PS)
      • S 350 CDI 4-matic (221.080, 221.081) (155kW/211PS)
      • S 350 CDI 4-matic (221.080, 221.180) (173kW/235PS)
    • M-CLASS (W166)
      • ML 250 CDI / BlueTEC 4-matic (166.004, 166.003) (150kW/204PS)
      • ML 350 BlueTEC 4-matic (166.024, 166.023) (190kW/258PS)
    • GL-CLASS (X164)
      • GL 350 CDI 4-matic (164.823) (195kW/265PS)
      • GL 320 CDI / 350 BlueTEC 4-matic (164.824, 164.825) (155kW/211PS)
    • M-CLASS (W164)
      • ML 280 CDI 4-matic (164.120) (140kW/190PS)
      • ML 320 CDI 4-matic (164.122) (165kW/224PS)
      • ML 300 CDI 4-matic (164.120) (140kW/190PS)
      • ML 350 CDI 4-matic (164.122) (165kW/224PS)
      • ML 350 CDI 4-matic (164.125, 164.124) (155kW/211PS)
      • ML 300 CDI 4-matic (164.121) (150kW/204PS)
      • ML 350 CDI 4-matic (164.125, 164.124) (170kW/231PS)
      • ML 320 CDI 4-matic (164.124, 164.125, 164.122) (155kW/211PS)
    • E-CLASS Coupe (C207)
      • E 250 CDI / BlueTEC / d (207.303, 207.304) (150kW/204PS)
      • E 220 CDI / d (207.302, 207.301) (125kW/170PS)
      • E 220 CDI (207.302) (120kW/163PS)
    • E-CLASS Kabriolets (A207)
      • E 220 CDI / BlueTEC / d (207.402, 207.401) (125kW/170PS)
      • E 250 CDI / BlueTEC / d (207.403, 207.404) (150kW/204PS)
    • C-CLASS (W205)
      • C 220 BlueTEC / d (205.002, 205.004) (125kW/170PS)
      • C 220 BlueTEC / d (205.003) (120kW/163PS)
      • C 250 BlueTEC / d (205.008, 205.006) (150kW/204PS)
      • C 180 BlueTEC / d (205.036) (85kW/116PS)
      • C 200 d (205.007) (100kW/136PS)
    • C-CLASS T-Model (S205)
      • C 220 BlueTEC / d (205.204) (125kW/170PS)
      • C 250 BlueTEC / d (205.208) (150kW/204PS)
      • C 180 BlueTEC / d (205.236) (85kW/116PS)
      • C 200 BlueTEC / d (205.237) (100kW/136PS)
      • C 250 BlueTEC / d 4-matic (205.209) (150kW/204PS)
      • C 220 BlueTEC / d (205.204) (120kW/163PS)
      • C 220 d 4-matic (205.205) (125kW/170PS)
      • C 200 d (205.207) (100kW/136PS)
    • GLE (W166)
      • 250 d (166.006) (150kW/204PS)
      • 250 d 4-matic (166.004) (150kW/204PS)
      • 350 d 4-matic (166.024) (190kW/258PS)
    • GLS (X166)
      • 350 d 4-matic (166.824) (190kW/258PS)
0 Updated