Advanced Products

Model: TK1

TK1 Thermal System

EMP's unique TK1 Thermal Kit is a compact single-fan thermal system that provides up to 90,000 Btu/h of heat rejection. The TK1 is an ideal solution for trucks and equipment that overheat due to harsh duty cycles and operation in hot climates. It can also be installed to improve fuel economy and vehicle performance. Another common use for the TK1 is for power electronics cooling on hybrid vehicles.

The TK1 features an EMP brushless electric fan. Fan control can be achieved either by an integrated controller or an external EMP C20 or CM20 controller. The TK1 is highly configurable. It is available in both 12 and 24-Volt, pusher and puller models. Control strategy can be configured as temperature control, CAN/J1939, PWM, or on/off. A WP32 electric water pump and 2-quart degas bottle are available as accessories.

Front View
Install View
TK1 Chart
TK1 Schematic
TK1 Schematic

Features & Benefits

EMP Brushless Electric Fan

TK1 coolers feature an EMP electric fan. Fans are available with or without an integrated controller. All EMP fans are brushless, controllable, reversible, and built from a cast aluminum shroud that can withstand even the harshest environments. Click here to learn more about EMP's fans.


Type Specification Description
Max Heat Rejection Rate 90,000 Btu/h
Overall Package Weight (without Fluid) 16 lbs.
Heat Exchanger Material Aluminum
Shroud Material Aluminum
Max Continuous Operating Temp 203° F
Min Continuous Operating Temp -40° F
Max Coolant Temp 257° F
Fan Configuration Push or Pull
Voltage 12 or 24 Volts
Max Current (Excluding Optional Pump) 25 Amps
Max Power 0.47 hp (12V), 0.94 hp (24V)
Max Fan Speed 4000 RPM (14V)
5000 RPM (28V)
Max Operating Pressure 25 psi
Supply and Return Hose Inner Diameter 1 inch
Optional Degas Hose Inner Diameter 1/4 inch
Maximum Coolant Flow Rate 50 gpm
Coolant Capacity 1.5 Qt.
Control Inputs On/Off, CAN/J1939, PWM, or Thermistor
Fuse Rating 30A
Degas Bottle (Optional) Capacity 2 Qt.


Please click on the thumbnail below to view a larger version of the image.


Voltage Configuration
12V 24V Push Pull
Optional Accessories
WP32 Electric Water Pump 2 Qt. Degas Bottle
On/Off PWM J1939 CAN Thermistor EMP-Link


Over-The-Road Truck

TK1 Supplemental Engine Cooling

Downloads & Documents

The following documents are available for this product. Please feel free to download to obtain additional product information.