TOPRAN 409 678 Wheel Speed Sensor

Compatible with MERCEDES-BENZ B-CLASS Sports Tourer (W246, W242) , MERCEDES-BENZ A-CLASS (W176) , MERCEDES-BENZ GLA-CLASS (X156) Show more info
Ensures accurate wheel speed data for your vehicle's ABS and traction control systems. Direct fit for reliable performance.
14.69 EUR
inc. VAT 21%
In stock 8
Delivery 1 day (15.05.2026)
PN 409 678
Make TOPRAN

This TOPRAN wheel speed sensor, part number 409 678, is designed to provide precise rotational speed information for each wheel. Accurate wheel speed data is crucial for the proper functioning of modern vehicle safety systems, including the Anti-lock Braking System (ABS) and Electronic Stability Control (ESC). A malfunctioning sensor can lead to warning lights on your dashboard and compromised safety performance. Engineered as a direct replacement, this sensor ensures seamless integration with your vehicle's existing wiring harness and braking system components. Installation is straightforward, restoring the integrity of your safety systems.

  • Direct replacement for original equipment
  • Ensures accurate wheel speed readings
  • Critical for ABS and traction control function
  • Restores proper operation of safety systems
  • High-quality materials for durability
  • Easy installation
Installation side
Rear axle on the left side
Installation side
Rear axle on the right side
Number of pin contacts
2
Additional article/Additional info 2
with wire
Length [mm]
1070
Braking dynamics/Movement dynamics
Vehicles with ABS
  • MERCEDES-BENZ
    • B-CLASS Sports Tourer (W246, W242)
      • B 180 (246.242) (90kW/122PS)
      • B 200 (246.243) (115kW/156PS)
      • B 180 CDI (246.200) (80kW/109PS)
      • B 200 CDI (246.201) (100kW/136PS)
      • B 220 4-matic (246.247) (135kW/184PS)
      • B 250 (246.244) (155kW/211PS)
      • B 220 CDI / d (246.203) (125kW/170PS)
      • B 160 CDI / d (246.211) (66kW/90PS)
      • B 180 CDI / d (246.212) (80kW/109PS)
      • B 250 4-matic (246.246) (155kW/211PS)
      • B 200 CDI / d (246.208) (100kW/136PS)
      • B 220 CDI / d 4-matic (246.205) (130kW/177PS)
      • B 160 (246.241) (75kW/102PS)
    • A-CLASS (W176)
      • A 180 (176.042) (90kW/122PS)
      • A 200 (176.043) (115kW/156PS)
      • A 250 (176.044) (155kW/211PS)
      • A 180 CDI / d (176.012) (80kW/109PS)
      • A 180 CDI (176.000) (80kW/109PS)
      • A 200 CDI (176.001) (100kW/136PS)
      • A 220 CDI (176.003) (125kW/170PS)
      • A 160 CDI / d (176.011) (66kW/90PS)
      • A 250 4-matic (176.046) (155kW/211PS)
      • A 200 CDI / d (176.008) (100kW/136PS)
      • A 200 CDI / d 4-matic (176.002) (100kW/136PS)
      • A 220 CDI 4-matic (176.005) (125kW/170PS)
      • A 220 4-matic (176.047) (135kW/184PS)
      • A 160 (176.041) (75kW/102PS)
      • A 250 (176.050) (160kW/218PS)
      • A 250 4-matic (176.051) (160kW/218PS)
    • GLA-CLASS (X156)
      • GLA 200 (156.943) (115kW/156PS)
      • GLA 200 CDI / d (156.908) (100kW/136PS)
      • GLA 200 CDI 4-matic (156.902) (100kW/136PS)
      • GLA 220 CDI (156.903) (125kW/170PS)
      • GLA 220 CDI 4-matic (156.905) (125kW/170PS)
      • GLA 250 (156.944) (155kW/211PS)
      • GLA 250 4-matic (156.946) (155kW/211PS)
      • GLA 180 CDI / d (156.912) (80kW/109PS)
      • GLA 180 (156.942) (90kW/122PS)
      • GLA 220 d (156.903) (130kW/177PS)
      • GLA 220 d 4-matic (156.905) (130kW/177PS)
      • GLA 220 4-matic (156.947) (135kW/184PS)
      • GLA 200 (156.943) (110kW/150PS)
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