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Automann · Electrical & Lighting
178.2543
In stock · ships from Knoxville
This is a 12V mini ISO relay with 5 terminals, designed to handle up to 40 amps on the normally open circuit and 30 amps on the normally closed circuit.
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
Volvo Trucks
International
Volvo Trucks
Standard mini ISO relay with diode; fits many heavy-duty truck makes and models using this relay type. Verified cross-references confirm direct fit for Volvo and International vehicles using those OEM part numbers.
Part data verified against 2 catalog sources
Numbers this part supersedes or interchanges with. Showing 3 of 3.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It includes a built-in diode to suppress voltage spikes when the coil is de-energized, protecting sensitive electronics in the vehicle. Commonly used in heavy-duty trucks to switch high-current loads like lights, motors, or solenoids. Replace a failing relay that causes intermittent or non-functional electrical components.
Part Number: 178.2543
RELAY-MINI 5 PIN 12V 40/30A SPDT DIODE
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
