U4847 12V Water Pump – Dedicated Circulation Pump for Webasto Thermo Top C/E/Z

Product Overview The U4847 is a replacement Webasto circulation pump designed specifically for Webasto Thermo Top C, Thermo Top E, Thermo Top Z, and some Thermo Top EVO series 12V auxiliary water heaters. This pump circulates coolant in the heating system’s closed loop, ensuring efficient and uniform heat transfer. It is a key replacement part for maintaining and repairing these heaters.

Key Technical Specifications

Voltage: 12V
Connection Diameter: 18-20 mm (typically 18 mm outlet)
Pump Type: Magnetic coupling impeller (brushless design for durability and quiet operation)
Webasto Part Number: 9002514B (common), replaces older numbers such as 93008A/B, 9017986A, 9012751A, etc.

Compatible Models

Webasto Thermo Top C (12V)
Webasto Thermo Top E (12V)
Webasto Thermo Top Z (12V)
Partial compatibility with Webasto Thermo Top EVO (12V)

Features and Benefits

Replacement OEM quality for perfect compatibility with your heater
Efficient, low-noise operation with reduced wear thanks to the magnetic coupling design
Easy installation; often available as a kit including hoses, clamps, screws, and wiring harness
Ideal for automotive, RV, marine, and auxiliary heating applications

Notes

For 12V systems only – confirm your heater’s voltage before purchase
Professional installation recommended to avoid leaks or electrical issues
Complete replacement kits are available for easier servicing

The U4847 circulation pump is the top choice for replacing a common wear item in Webasto Thermo Top series heaters, keeping your system reliable in cold weather!