Dometic ProHeat X30 Blower Assembly
The Dometic ProHeat 149931K Blower Assembly is the factory replacement blower assembly used in the fan-end section of compatible ProHeat X30 diesel-fired coolant heaters.
Rather than supplying only the blower motor, ProHeat packages 149931K as an assembly with the associated blower speed sensor and fan blade already included. This helps simplify service when the complete blower assembly requires replacement.
Key Features
- Genuine Dometic ProHeat replacement part
- Factory part number 149931K
- Designed for the ProHeat X30
- Complete blower assembly
- Includes blower speed sensor
- Includes capped fan blade
- Used in the X30 fan-end assembly
- Factory-configured replacement for service and repair
What’s Included
The official ProHeat X30 parts catalog identifies 149931K as the complete blower assembly and specifies that it comes with:
- 149345K – Blower Speed Sensor
- 149333K – Capped Fan Blade
- Blower assembly
These components are shown together as Item 5 in the factory X30 fan-end and blower diagram.
Compatibility
- Manufacturer: Dometic ProHeat
- ProHeat Part Number: 149931K
- BTRAC Part Number: PH-149931K
- Product Type: Blower Assembly
- Heater Family: ProHeat X30
- Assembly Location: Fan End
The current ProHeat X30 single-fuel-line parts catalog lists 149931K for heaters with serial number X3H18017001 and above.
Important Fitment Note
ProHeat maintains separate parts documentation for earlier dual-fuel-line X30 heaters, identified as serial number X3H18017000 and below. The current single-fuel-line catalog confirms 149931K for the later configuration, so the heater serial number should be verified when servicing an earlier X30.
Blower Speed Monitoring
The 149931K assembly includes the factory 149345K blower speed sensor.
The speed sensor is part of the X30 blower system and allows the heater’s electronic control system to monitor blower operation. ProHeat’s X30 platform uses adaptive electronic controls and system monitoring to support consistent operation and diagnostics.
Replacing the complete 149931K assembly provides the blower, speed sensor, and fan blade together rather than requiring those components to be sourced separately.
Related X30 Fan-End Components
The factory parts catalog also identifies several surrounding fan-end components that are sold separately:
- 149713K – Fan End Casting
- 207512K – M5 × 0.8 × 12 Low-Profile Screws
- 149339K – Thermal Break Spacer
- 149345K – Blower Speed Sensor
- 149333K – Capped Fan Blade
- 149340K – Splash Guard Cover
The fan-end casting, thermal spacer, splash guard, and mounting screws are not listed as part of the 149931K blower assembly.
Installation Notes
Before replacing the blower assembly:
- Confirm the heater is a compatible ProHeat X30
- Verify the existing part number where possible
- Check the heater serial number
- Shut the heater down completely before service
- Disconnect vehicle power before working on electrical or moving components
- Inspect surrounding wiring and fan-end components for damage
- Confirm the fan blade rotates freely after installation
- Follow the applicable ProHeat X30 service procedures
ProHeat cautions that electrical power should be disconnected before servicing the heater and that protective covers should be installed before operation.
Product Specifications
- BTRAC SKU: PH-149931K
- Manufacturer: Dometic ProHeat
- Manufacturer Part Number: 149931K
- Product Type: Blower Assembly
- Compatible Heater: ProHeat X30
- Assembly Location: Fan End
- Includes Blower Speed Sensor: Yes
- Speed Sensor Part Number: 149345K
- Includes Fan Blade: Yes
- Fan Blade Part Number: 149333K
- Application: Replacement / service component
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