TOPRAN 638 566 Exhaust Gas Temperature Sensor

Compatible with AUDI A4 B8 (8K2) , AUDI A4 B8 Avant (8K5) , AUDI Q5 (8RB) Show more info
This TOPRAN sensor accurately measures exhaust gas temperature, crucial for optimal engine performance and emissions control.
30.33 EUR
inc. VAT 21%
In stock 8
Delivery 1 day (30.03.2026)
PN 638566
Make TOPRAN

The TOPRAN 638 566 is a high-quality sensor designed to monitor the temperature of exhaust gases. Proper monitoring of exhaust gas temperature is essential for the efficient operation of your vehicle's engine and exhaust system. This sensor plays a vital role in ensuring that your engine runs within its optimal temperature range. By providing accurate data, it allows the engine control unit (ECU) to make necessary adjustments to fuel injection and ignition timing, thereby improving performance and fuel economy. Furthermore, by maintaining the correct exhaust gas temperature, this sensor contributes to reducing harmful emissions. It helps the catalytic converter function effectively, ensuring your vehicle meets environmental standards. This TOPRAN sensor is built to withstand the harsh conditions of the exhaust system, offering reliability and longevity.

  • Direct fit for specified applications
  • Ensures accurate exhaust gas temperature readings
  • Supports optimal engine performance
  • Aids in emissions control
  • Contributes to fuel efficiency
  • Durable construction for longevity
  • Designed to meet or exceed OE specifications
Installation side
behind the soot filter
Exhaust gas system
For vehicles with a factory-installed soot/particulate filter
Component number
G 648
Component number
G 527
Number of pin contacts
2
Mounting type
screwed
Connector color
brown
Sensor type
NTC sensor
Cable length [mm]
220
Overall length [mm]
371
Thread size
M 14
Thread pitch [mm]
+15
Plug connector housing shape
D-Shape
Wrench size
17
Additional article/Additional info 2
with wire
Screw head/nut profile
Hex key
Form
straight
Type of wire insulation
with corrugated pipe insulation
  • AUDI
    • A4 B8 (8K2)
      • 2.0 TDI (105kW/143PS)
      • 2.0 TDI (100kW/136PS)
      • 2.0 TDI (125kW/170PS)
      • 2.0 TDI quattro (125kW/170PS)
      • 2.0 TDI (88kW/120PS)
      • 2.0 TDI (120kW/163PS)
      • 2.0 TDI quattro (105kW/143PS)
    • A4 B8 Avant (8K5)
      • 2.0 TDI (105kW/143PS)
      • 2.0 TDI (125kW/170PS)
      • 2.0 TDI (100kW/136PS)
      • 2.0 TDI quattro (125kW/170PS)
      • 2.0 TDI (88kW/120PS)
      • 2.0 TDI (120kW/163PS)
      • 2.0 TDI quattro (105kW/143PS)
    • Q5 (8RB)
      • 2.0 TDI quattro (125kW/170PS)
      • 2.0 TDI quattro (105kW/143PS)
      • 2.0 TDI quattro (120kW/163PS)
    • A5 (8T3)
      • 2.0 TDI (125kW/170PS)
      • 2.0 TDI quattro (125kW/170PS)
      • 2.0 TDI (120kW/163PS)
    • A5 Sportback (8TA)
      • 2.0 TDI (125kW/170PS)
      • 2.0 TDI (120kW/163PS)
      • 2.0 TDI (100kW/136PS)
      • 2.0 TDI (105kW/143PS)
      • 2.0 TDI quattro (125kW/170PS)
0 Updated