Description
MODEL 4 HEATER KIT
PART NUMBER(S):
[Fleet Products] 102657-G3, 102657G3 | [Haldex] 102657-G3 | [Automann] 170-102657
DESCRIPTION:
Model: Model 2 & Model 4 Air Dryers
Engines: N/A (air dryer heater component)
Vehicles: Trucks, buses, military vehicles, and heavy vehicles equipped with Model 2 or Model 4 air dryers
• Heater kit prevents freeze-up by maintaining optimal temperature in air dryer assembly
• Compatible with Haldex air dryer models 286934X, 286936X, 65041X
• Voltage: Typically 12V or 24V DC
• Heater wattage: Approx. 75W
• Mounts directly into Model 2 and Model 4 air dryers
• Integrates with dryer thermostat and control circuit, activating around 35°F (1.7°C) to prevent freeze
Applications: Used to maintain dryer functionality in cold climates by heating internal air dryer components, ensuring continuous air brake system reliability
CROSS-REFERENCE(S):
102657G3, 102657-G3, 170-102657, 102657, 102657K, H102657, 286934X, 286936X, 65041X
A cross-reference listing means these numbers identify equivalent parts from different manufacturers or distributors that fit the same application.
IMPORTANT INSTALLATION NOTES:
Depressurize air system before servicing or installation
Verify heater voltage (12V vs. 24V) to prevent electrical damage
Follow dryer manufacturer instructions for wiring and thermostat integration
Confirm mounting bracket alignment on military or specialty vehicles
Ensure all seals and connectors prevent moisture ingress for reliable operation
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Warranty Information
