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Post Onsite · Electrical & Lighting
AR174
In stock · ships from Knoxville
This is a multi-purpose 12‑volt automotive relay. It is an electrically operated switch that uses a low‑current signal to control a high‑current circuit, often used for blower motors, air conditioning compressors, fuel pumps, or other high‑draw accessories.
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On older General Motors vehicles, the AR174 is a common replacement part that restores proper operation when the original relay fails due to worn contacts or a burned‑out coil. Replacement is usually a simple plug‑in procedure that does not require wiring modifications.
Part Number: AR174
ECH RELAY
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
