Description
109578-G3 - MODEL 9 HEATER KIT - 12V, 75W
PART NUMBER(S):
Fleet Products: 109578-G3 (New) | Replaces OE: Bendix 109578, 109578K, 109578BXW, BEN109578 | Automann 170.109578 | Mack 745109578, 745-109578 | Meritor R955109578, R955109578N, R955109578X, TDAR955109578N | Velvac 034092 | Newstar S-C680, SC680, BER-109578 | Volvo 3948980 | Euclid E-BN109578N | World American WA109578
DESCRIPTION:
Model: Model 9 / AD-9 air dryer heater kit
Vehicles: Heavy-duty trucks, buses, and trailers equipped with compatible Model 9 / AD-9 air dryer systems
• Voltage: 12V DC
• Wattage: 75W
• Kit Type: Heater / thermostat kit
• Kit Contents: Heater element, thermostat, plug assembly, seal rings, and hardware
• Mounting Style: Direct replacement for Model 9 / AD-9 air dryers
• Function: Helps prevent air dryer freeze-up during cold-weather operation
Applications:
Designed to prevent freeze-ups in air brake systems by maintaining operating temperature inside the air dryer assembly. Suitable for OEM and aftermarket replacement across heavy-duty fleet platforms using compatible Model 9 / AD-9 air dryers. Confirm 12V system voltage and dryer model before installation.
CROSS-REFERENCE(S):
109578-G3, 109578, 109578K, 060-109578, 109578BXW, MID109578K, BEN109578, R955109578, R955109578N, R955109578X, TDAR955109578N, 034092, 12150, LKT-1215, 14328, AT109578, BER-109578, S-C680, SC680, BW109578, BW 109578, 745-109578, 745109578, BX109578, 3948980, E-BN109578N, TR109578, WA109578, B002HU834Q
A cross-reference listing means the part is functionally compatible with these numbers in fit, form, and function. Always verify exact application before installation.
IMPORTANT INSTALLATION NOTES:
✔ Disconnect vehicle power and fully depressurize the air system before servicing.
✔ Confirm compatibility with Model 9 / AD-9 dryer systems only.
✔ Confirm the vehicle uses a 12V air dryer heater before replacement.
✔ Use included seal rings and lubricants for a leak-free installation.
✔ Follow manufacturer torque and electrical connection procedures.
✔ After installation, check for air leaks and confirm proper heater and purge operation.
Warranty Information
