TOPRAN 638 571 Exhaust Gas Temperature Sensor

Compatible with VW TOUAREG (7P5, 7P6) , AUDI A6 C6 (4F2) , AUDI A6 C6 Avant (4F5) Show more info
Measures exhaust gas temperature to optimize engine performance and emissions. Ensures accurate readings for your vehicle's exhaust system.
25.45 EUR
inc. VAT 21%
In stock 8
Delivery 1 day (23.03.2026)
PN 638571
Make TOPRAN

This TOPRAN exhaust gas temperature sensor, part number 638 571, is designed to monitor the temperature of exhaust gases. Accurate temperature readings are crucial for the proper functioning of modern engine management systems, helping to control fuel injection, ignition timing, and exhaust aftertreatment processes. By providing precise data, this sensor contributes to maintaining optimal engine performance, reducing fuel consumption, and minimizing harmful emissions. Its robust construction ensures reliability and longevity even under the demanding conditions found in the exhaust system. Replacing a faulty exhaust gas temperature sensor can resolve issues related to poor engine performance, increased fuel usage, and check engine lights. This TOPRAN sensor is engineered to meet or exceed original equipment specifications, offering a dependable solution for your vehicle's needs.

  • Direct fit for specified vehicle applications
  • Monitors exhaust gas temperature accurately
  • Supports optimal engine performance and fuel efficiency
  • Helps reduce harmful emissions
  • Durable construction for long service life
  • Meets or exceeds OE specifications
  • Essential for modern engine management systems
Installation side
at the exhaust gas recirculation valve cooler
Number of pin contacts
2
Mounting type
screwed
Connector color
orange
Wrench size
17
Sensor type
NTC sensor
Cable length [mm]
260
Overall length [mm]
420
Thread size
M 14
Thread pitch [mm]
+15
Plug connector housing shape
D-Shape
Additional article/Additional info 2
with wire
Screw head/nut profile
Hex key
Form
Curved
Type of wire insulation
with silicone insulation
  • VW
    • TOUAREG (7P5, 7P6)
      • 3.0 V6 TDI (150kW/204PS)
      • 3.0 V6 TDI (176kW/240PS)
  • AUDI
    • A6 C6 (4F2)
      • 3.0 TDI quattro (155kW/211PS)
      • 2.7 TDI (120kW/163PS)
      • 2.7 TDI quattro (120kW/163PS)
      • 2.7 TDI (140kW/190PS)
      • 2.7 TDI quattro (140kW/190PS)
      • 3.0 TDI quattro (176kW/240PS)
    • A6 C6 Avant (4F5)
      • 2.7 TDI (120kW/163PS)
      • 3.0 TDI quattro (155kW/211PS)
      • 2.7 TDI quattro (120kW/163PS)
      • 2.7 TDI (140kW/190PS)
      • 2.7 TDI quattro (140kW/190PS)
      • 3.0 TDI quattro (176kW/240PS)
    • A5 (8T3)
      • 2.7 TDI (140kW/190PS)
      • 3.0 TDI quattro (176kW/240PS)
      • 2.7 TDI (120kW/163PS)
      • 3.0 TDI quattro (155kW/211PS)
    • A4 B8 (8K2)
      • 2.7 TDI (140kW/190PS)
      • 3.0 TDI quattro (176kW/240PS)
      • 3.0 TDI quattro (155kW/211PS)
    • A4 B8 Avant (8K5)
      • 3.0 TDI quattro (176kW/240PS)
      • 2.7 TDI (120kW/163PS)
      • 2.7 TDI (140kW/190PS)
      • 3.0 TDI quattro (155kW/211PS)
    • Q7 (4LB)
      • 3.0 TDI quattro (176kW/240PS)
    • Q5 (8RB)
      • 3.0 TDI quattro (176kW/240PS)
      • 3.0 TDI quattro (155kW/211PS)
    • A5 Kabriolets (8F7)
      • 2.7 TDI (140kW/190PS)
      • 3.0 TDI quattro (176kW/240PS)
    • A5 Sportback (8TA)
      • 2.7 TDI (140kW/190PS)
      • 3.0 TDI quattro (176kW/240PS)
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