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Automann · Electrical & Lighting
178.75501
In stock · ships from Knoxville
A 12-volt, 75-amp single-pole single-throw (SPST) power relay designed for heavy-duty trucks.
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Verified fitment for 2 applications
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All confirmed applications for this part number.
Peterbilt
Other applications
Peterbilt
Other applications
Also fits universal 12V high-current applications requiring a 75A SPST relay with 2 plug and 2 screw terminals. Verify terminal configuration and mounting before installation.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 10 of 10.
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It is commonly used as a starter relay or main power switch, handling high current loads. The relay has two plug-in coil terminals and two screw terminals for the power circuit. Replace it when you experience intermittent cranking, no-start conditions, or visible contact burning.
Part Number: 178.75501
RELAY
Vendor: Automann
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
