Seller notes

This Mack Prostar air intake heater relay with manufacturer part number 20557917 is a reliable and essential component for your commercial truck's ignition, charging, and starting system. Made in the United States, it is designed to ensure optimal performance and durability. This unit is suitable for use with Mack trucks and comes in a unit quantity of 1. Its brand, Mack, is known for producing high-quality truck parts, and this heater relay is no exception. Whether you're replacing a ...

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