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TOPRAN TOPRAN Pressure Switch, Air Conditioning System 638502

TOPRAN Pressure Switch, Air Conditioning System

Compatible with AUDI A6 C5 (4B2, 4B4) , AUDI A6 C5 Avant (4B5, 4B6) , AUDI A2 (8Z0) Show more info
Ensures proper functioning of your vehicle's air conditioning system. Maintains optimal refrigerant pressure for efficient cooling.
21.92 EUR
inc. VAT 21%
In stock 36
Delivery 1 day (15.05.2026)
PN 638 502
Make TOPRAN

This TOPRAN pressure switch is designed to regulate and monitor the refrigerant pressure within your vehicle's air conditioning system. A correctly functioning pressure switch is crucial for the overall performance and longevity of your AC. It plays a vital role in preventing damage to the compressor by ensuring that the system operates within safe pressure limits. When the pressure is too high or too low, this switch will signal the system to shut down or adjust accordingly, protecting sensitive components. Easy to install, this switch is a direct replacement for the original part, ensuring compatibility and reliable operation. Maintain the comfort in your cabin with a dependable AC system.

  • Direct replacement for original part
  • Ensures correct refrigerant pressure regulation
  • Protects AC compressor from damage
  • Contributes to efficient cooling performance
  • Reliable operation for consistent comfort
  • High-quality construction by TOPRAN
Number of pressure sensor connections
3
Wrench size
24
Vehicle equipment
For vehicles with an air conditioning system
Thread pitch [mm]
+125
Thread size
M 10
Plug connector housing shape
D-Shape
  • AUDI
    • A6 C5 (4B2, 4B4)
      • 1.8 T (110kW/150PS)
      • 1.8 T quattro (110kW/150PS)
      • 2.4 (121kW/165PS)
      • 2.4 quattro (121kW/165PS)
      • 1.9 TDI (81kW/110PS)
      • 2.5 TDI (110kW/150PS)
      • 2.8 (142kW/193PS)
      • 2.8 quattro (142kW/193PS)
      • 2.5 TDI quattro (110kW/150PS)
      • 1.8 (92kW/125PS)
      • 2.7 T (169kW/230PS)
      • 2.7 T quattro (169kW/230PS)
      • 1.8 T quattro (132kW/180PS)
      • 2.4 (100kW/136PS)
      • 1.8 T (132kW/180PS)
      • 2.5 TDI (132kW/180PS)
      • 2.5 TDI quattro (132kW/180PS)
      • 1.9 TDI (85kW/115PS)
      • 2.8 (132kW/180PS)
      • 2.8 (140kW/190PS)
      • 2.4 (115kW/156PS)
      • 2.0 (96kW/130PS)
      • 3.0 (162kW/220PS)
      • 3.0 quattro (162kW/220PS)
      • 2.4 (125kW/170PS)
      • 2.4 quattro (125kW/170PS)
      • 2.5 TDI (114kW/155PS)
      • 2.7 T quattro (184kW/250PS)
      • 1.9 TDI (96kW/130PS)
      • 2.4 (120kW/163PS)
      • 2.4 quattro (120kW/163PS)
      • 2.5 TDI (120kW/163PS)
      • 2.4 quattro (115kW/156PS)
      • 2.8 quattro (140kW/190PS)
      • 3.0 (160kW/218PS)
    • A6 C5 Avant (4B5, 4B6)
      • 1.9 TDI (81kW/110PS)
      • 1.8 (92kW/125PS)
      • 2.8 quattro (142kW/193PS)
      • 1.8 T (110kW/150PS)
      • 2.4 (121kW/165PS)
      • 2.8 (142kW/193PS)
      • 1.8 T quattro (110kW/150PS)
      • 2.4 quattro (121kW/165PS)
      • 2.5 TDI (110kW/150PS)
      • 2.5 TDI quattro (110kW/150PS)
      • 2.7 T (169kW/230PS)
      • 2.7 T quattro (169kW/230PS)
      • 2.4 (100kW/136PS)
      • 1.8 T quattro (132kW/180PS)
      • 1.8 T (132kW/180PS)
      • 2.5 TDI (132kW/180PS)
      • 2.5 TDI quattro (132kW/180PS)
      • 1.9 TDI (85kW/115PS)
      • 2.8 (132kW/180PS)
      • 2.8 (140kW/190PS)
      • 2.4 (115kW/156PS)
      • 2.0 (96kW/130PS)
      • 2.4 (125kW/170PS)
      • 2.4 quattro (125kW/170PS)
      • 2.5 TDI (114kW/155PS)
      • 3.0 (162kW/220PS)
      • 3.0 quattro (162kW/220PS)
      • 1.9 TDI (96kW/130PS)
      • 2.4 (120kW/163PS)
      • 2.4 quattro (120kW/163PS)
      • 2.5 TDI (120kW/163PS)
      • 2.4 quattro (115kW/156PS)
      • 3.0 (160kW/218PS)
    • A2 (8Z0)
      • 1.4 TDI (55kW/75PS)
      • 1.4 (55kW/75PS)
      • 1.2 TDI (45kW/61PS)
      • 1.6 FSI (81kW/110PS)
      • 1.4 TDI (66kW/90PS)
    • A4 B6 (8E2)
      • 1.8 T (110kW/150PS)
      • 2.0 (96kW/130PS)
      • 1.8 T quattro (110kW/150PS)
      • 3.0 (162kW/220PS)
      • 3.0 quattro (162kW/220PS)
      • 1.9 TDI (96kW/130PS)
      • 2.5 TDI quattro (132kW/180PS)
      • 1.6 (75kW/102PS)
      • 2.5 TDI (114kW/155PS)
      • 1.9 TDI (74kW/101PS)
      • 2.4 (125kW/170PS)
      • 2.0 FSI (110kW/150PS)
      • 1.9 TDI quattro (96kW/130PS)
      • 1.8 T (120kW/163PS)
      • 1.8 T quattro (120kW/163PS)
      • 2.5 TDI (120kW/163PS)
      • 2.4 (120kW/163PS)
      • 1.8 T (140kW/190PS)
      • 1.8 T quattro (140kW/190PS)
      • 1.9 TDI (85kW/116PS)
      • 3.0 (160kW/218PS)
      • 3.0 quattro (160kW/218PS)
    • A4 B6 Avant (8E5)
      • 1.6 (75kW/102PS)
      • 2.0 (96kW/130PS)
      • 1.8 T (110kW/150PS)
      • 3.0 (162kW/220PS)
      • 1.9 TDI (96kW/130PS)
      • 2.4 (125kW/170PS)
      • 2.5 TDI quattro (132kW/180PS)
      • 2.5 TDI (114kW/155PS)
      • 1.8 T quattro (110kW/150PS)
      • 3.0 quattro (162kW/220PS)
      • 1.9 TDI (74kW/101PS)
      • 1.9 TDI quattro (96kW/130PS)
      • 2.0 FSI (110kW/150PS)
      • 1.8 T (120kW/163PS)
      • 1.8 T quattro (120kW/163PS)
      • 2.5 TDI (120kW/163PS)
      • 2.4 (120kW/163PS)
      • 1.8 T (140kW/190PS)
      • 1.8 T quattro (140kW/190PS)
      • 1.9 TDI (85kW/116PS)
      • 3.0 (160kW/218PS)
      • 3.0 quattro (160kW/218PS)
    • A8 D3 (4E2, 4E8)
      • 4.2 quattro (246kW/335PS)
      • 3.7 quattro (206kW/280PS)
      • 4.0 TDI quattro (202kW/275PS)
      • 3.0 (162kW/220PS)
      • 6.0 W12 quattro (331kW/450PS)
      • 3.0 TDI quattro (171kW/233PS)
      • 3.2 FSI (191kW/260PS)
      • 3.2 FSI quattro (191kW/260PS)
      • 4.2 TDI quattro (235kW/320PS)
      • 3.0 (160kW/218PS)
      • 3.0 TDI quattro (155kW/211PS)
      • S8 quattro (331kW/450PS)
      • 4.2 TDI quattro (240kW/326PS)
      • 4.2 FSI quattro (257kW/350PS)
      • 2.8 FSI (154kW/210PS)
    • A4 B7 (8EC)
      • 2.0 TFSI (147kW/200PS)
      • 2.0 TFSI quattro (147kW/200PS)
      • 3.2 FSI (188kW/255PS)
      • 3.2 FSI quattro (188kW/255PS)
      • 2.0 TDI (100kW/136PS)
      • 2.0 TDI 16V (103kW/140PS)
      • 3.0 TDI quattro (150kW/204PS)
      • 1.8 T (120kW/163PS)
      • 2.0 (96kW/130PS)
      • 1.6 (75kW/102PS)
      • 1.9 TDI (85kW/116PS)
      • 2.5 TDI (120kW/163PS)
      • 2.0 TFSI (162kW/220PS)
      • 2.0 TFSI quattro (162kW/220PS)
      • 2.0 TDI quattro (103kW/140PS)
      • 2.0 TDI (125kW/170PS)
      • 2.0 TDI quattro (125kW/170PS)
      • 2.7 TDI (132kW/180PS)
      • 3.0 TDI quattro (171kW/233PS)
      • 2.0 TDI (103kW/140PS)
      • 2.0 TFSI (125kW/170PS)
      • 3.0 quattro (160kW/218PS)
      • 2.0 TDI (89kW/121PS)
      • 2.0 TDI (93kW/126PS)
      • 2.7 TDI (120kW/163PS)
    • A4 B7 Avant (8ED)
      • 1.6 (75kW/102PS)
      • 2.0 (96kW/130PS)
      • 1.8 T (120kW/163PS)
      • 1.8 T quattro (120kW/163PS)
      • 2.0 TFSI (147kW/200PS)
      • 2.0 TFSI quattro (147kW/200PS)
      • 3.2 FSI (188kW/255PS)
      • 3.2 FSI quattro (188kW/255PS)
      • 1.9 TDI (85kW/116PS)
      • 2.0 TDI 16V (103kW/140PS)
      • 2.5 TDI (120kW/163PS)
      • 3.0 TDI quattro (150kW/204PS)
      • 2.0 TDI quattro (103kW/140PS)
      • 2.0 TFSI (162kW/220PS)
      • 2.0 TFSI quattro (162kW/220PS)
      • 2.0 TDI (125kW/170PS)
      • 2.0 TDI quattro (125kW/170PS)
      • 2.7 TDI (132kW/180PS)
      • 2.0 TDI (100kW/136PS)
      • 3.0 TDI quattro (171kW/233PS)
      • 2.0 TDI (103kW/140PS)
      • 2.0 TFSI (125kW/170PS)
      • 3.0 quattro (160kW/218PS)
      • 3.0 (160kW/218PS)
      • 2.0 TDI (89kW/121PS)
      • 2.0 TDI (120kW/163PS)
      • 2.0 TDI quattro (120kW/163PS)
      • 2.7 TDi (120kW/163PS)
      • 2.0 TDI (93kW/126PS)
  • VW
    • PASSAT B5.5 (3B3)
      • 2.0 (96kW/130PS)
    • PASSAT B5.5 Variant (3B6)
      • 2.0 (96kW/130PS)
  • SEAT
    • EXEO (3R2)
      • 1.6 (75kW/102PS)
      • 1.8 T (110kW/150PS)
      • 2.0 TFSI (147kW/200PS)
      • 2.0 TDI (105kW/143PS)
      • 2.0 TDI (125kW/170PS)
      • 2.0 TDI (88kW/120PS)
      • 1.8 TSI (88kW/120PS)
      • 1.8 TSI (118kW/160PS)
      • 2.0 TFSI (155kW/211PS)
    • EXEO ST (3R5)
      • 1.6 (75kW/102PS)
      • 1.8 T (110kW/150PS)
      • 2.0 TFSI (147kW/200PS)
      • 2.0 TDI (105kW/143PS)
      • 2.0 TDI (125kW/170PS)
      • 2.0 TDI (88kW/120PS)
      • 1.8 TSI (88kW/120PS)
      • 1.8 TSI (118kW/160PS)
      • 2.0 TFSI (155kW/211PS)
AUDI
8E0 959 126A 3R0 959 126 8E0 959 126B 8E0 959 126 8E0 959 126C 8Z0 959 126
PORSCHE
8E0 959 126A 3R0 959 126 8E0 959 126C 8E0 959 126 8E0 959 126B 8Z0 959 126
SEAT
8E0 959 126A 8E0 959 126 3R0 959 126 8E0 959 126C 8E0 959 126B 8Z0 959 126
SKODA
8E0 959 126A 3R0 959 126 8E0 959 126B 8E0 959 126 8E0 959 126C 8Z0 959 126
VW
3R0 959 126 8E0 959 126 8Z0 959 126 8E0 959 126C 8E0 959 126A 8E0 959 126B
VAG
3R0 959 126 8E0 959 126 8Z0 959 126 8E0 959 126A 8E0 959 126B 8E0 959 126C
CUPRA
8E0 959 126A 8E0 959 126 3R0 959 126 8E0 959 126B 8E0 959 126C 8Z0 959 126
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