Get U.S.-based product support from vehicle HVAC experts. We can help with compatibility, product selection, installation, and troubleshooting.
Contact an Expert
Availability:
IN STOCK, SHIPS IN 24 HOURS
Shipping:
Calculated at Checkout. Most in-stock orders ship from our Costa Mesa, CA warehouse the same or next business day.
View Shipping Details
Warranty:
Products include manufacturer-backed warranty coverage. Terms vary by product and brand.
View Warranty Details
Returns:
Eligible unused items in their original packaging may be returned within 14 days of delivery. Terms and fees may apply.
View Return Policy
Circulation Coolant / Water Pump Aquavent 6000C 24V – U4855
Durable Brushless EC Motor for Energy-Efficient Performance
The Aquavent 6000C U4855 coolant circulation pump features an advanced brushless EC motor for high durability and long-term reliability.
Its lightweight design—14% lighter than previous models—helps reduce overall fuel and energy consumption in vehicle heating systems.
Self-Protection Features for Hassle-Free Operation:
Smooth start-up control for reduced mechanical loading
Built-in overload protection for dry running and blockages
Maintenance-free design
This circulation pump is commonly used with Webasto DBW, DW, Thermo, Spheros and Eberspacher heaters,
as well as other heating systems requiring the U4855 part number.
Fits:
Webasto Thermo 230
Webasto Thermo 300
Webasto Thermo 350
Spheros Thermo 230
Spheros Thermo 300
Spheros Thermo 350
Other compatible heaters requiring U4855
U4855 Coolant Circulation Pump Technical Details:
Voltage: 24V
Flow rate: 6000 l/h at 0.4 bar or 1585 GPH at 5.8 psi
Nominal power consumption: 210 W
Operating voltage range: 20–28 V
Operating pressure: 2.9–29 psi or 0.2–2 bar (max)
Weight: 5.29 lbs or 2.4 kg
Dimensions (L x W x H): 8.86 x 4.33 x 4.53 inches or 225 x 110 x 115 mm
