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Automann · Electrical & Lighting
178.2556
In stock · ships from Knoxville
This is an electronic turn signal and hazard flasher relay for heavy-duty trucks and buses.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
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All confirmed applications for this part number.
International
Mack Trucks
International
Mack Trucks
Also fits many other Class 7-8 trucks and commercial vehicles using a standard 12V 2-pin flasher socket. Verify socket configuration before ordering.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 2 of 2.
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It controls the flashing of up to 16 lamps (2 to 35 amp load) on a 12-volt DC electrical system, ensuring a steady flash rate without hyper-flashing. The unit is typically replaced when lights stay on, flash too fast, or stop flashing entirely due to a failed mechanical or electronic flasher. Its solid-state design is more durable than thermal flashers and meets SAE 100-hour reliability standards for demanding commercial environments.
Part Number: 178.2556
ELECTRONIC FLASHER 2 TERMINAL 35A
Unit: ea
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
