Auxiliary Water Pump

Compatible with BMW 3 Touring (E91) , BMW 3 (E90) , BMW 1 (E81) Show more info
Ensures efficient coolant circulation for optimal engine temperature management.
74.65 EUR
inc. VAT 21%
In stock 4
Delivery 1 day (15.05.2026)
PN 503 106
Make TOPRAN

This auxiliary water pump is designed to maintain optimal engine temperature by ensuring consistent coolant circulation. It plays a crucial role in the vehicle's cooling system, especially during periods of low engine speed or when the main water pump's flow is insufficient. Proper functioning of the auxiliary pump helps prevent overheating and ensures the heater system operates effectively, providing cabin comfort in various weather conditions. It is a key component for maintaining the longevity and performance of your engine.

  • Direct replacement for original auxiliary water pump
  • Maintains optimal engine operating temperature
  • Ensures efficient coolant circulation
  • Supports heater system performance
  • Reliable performance for everyday driving
  • Durable construction for long service life
Operating mode
electric
Number of pin contacts
2
  • BMW
    • 3 Touring (E91)
      • 318 d (100kW/136PS)
      • 318 i (100kW/136PS)
      • 320 i (110kW/150PS)
      • 320 d (130kW/177PS)
      • 330 d (180kW/245PS)
      • 330 d xDrive (180kW/245PS)
      • 320 d xDrive (130kW/177PS)
    • 3 (E90)
      • 318 d (100kW/136PS)
      • 320 i (110kW/150PS)
      • 318 i (95kW/129PS)
      • 320 si (127kW/173PS)
      • 320 d (130kW/177PS)
      • 316 i (85kW/115PS)
      • 330 d (180kW/245PS)
      • 330 d xDrive (180kW/245PS)
      • 320 d xDrive (130kW/177PS)
      • 316 d (85kW/116PS)
    • 1 (E81)
      • 116 i (85kW/115PS)
      • 118 d (105kW/143PS)
      • 120 d (130kW/177PS)
      • 123 d (150kW/204PS)
      • 120 i (115kW/156PS)
      • 116 d (85kW/116PS)
    • 3 Coupe (E92)
      • 320 d (130kW/177PS)
      • 330 d (180kW/245PS)
      • 320 d xDrive (130kW/177PS)
    • 1 Coupe (E82)
      • 120 d (130kW/177PS)
      • 123 d (150kW/204PS)
      • 118 d (105kW/143PS)
    • 1 Kabriolets (E88)
      • 120 d (130kW/177PS)
      • 118 d (105kW/143PS)
      • 123 d (150kW/204PS)
    • 3 Kabriolets (E93)
      • 320 d (130kW/177PS)
      • 330 d (180kW/245PS)
      • 320 i (115kW/156PS)
    • X1 (E84)
      • sDrive 18 i (110kW/150PS)
    • 1 (E87)
      • 116 i (85kW/115PS)
      • 118 i (95kW/129PS)
      • 120 i (110kW/150PS)
      • 120 i (115kW/156PS)
      • 116 d (85kW/116PS)
      • 118 d (105kW/143PS)
      • 120 d (130kW/177PS)
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