15328864 (4-Pack) 12V 40A 4-Pin SPST Automotive Power Relay Compatible with Chevy Silverado GMC Sierra Buick Enclave fits AC Compressor Fuel Pump and Starter Replacement for 12193604 13503102 19116860

Professional Electrical System Restoration with 15328864 Relay SetIs your vehicle's AC compressor failing to engage or is your engine struggling to start? In many modern trucks and SUVs, a worn-out electrical relay is the hidden culprit behind stubborn fault codes and sudden power loss. The 15328864 4-pin SPST relay acts as a critical switch for your high-current systems. By replacing aging factory relays with these high-specification units, you ensure your powertrain and climate control modules receive the stable, clean voltage they need to run smoothly.Built to handle the intense heat of your engine bay's fuse box, these relays feature upgraded internal silver-alloy contacts that resist pitting and carbon buildup. This 4-pack allows you to proactively refresh multiple systems simultaneously—such as the fuel pump, ignition, and cooling fans—preventing the "domino effect" of sequential circuit failures. Whether you are clearing a "Check Engine" light or restoring cold airflow to your cabin, these precision-engineered components provide the mechanical switching integrity your vehicle requires.Applications Include:Climate Control: Compatible with Chevy AC compressor clutch and blower motor circuits.Powertrain Support: Restores power to the fuel pump and starter motor relay sockets.Thermal Management: Manages radiator cooling fans for models compatible with GMC Sierra.System Integrity: Suitable for horn, headlights, and main power distribution modules.How to Choose:Confirm your original relay part number matches 15328864, 12193604, or 13503102. Please verify the 4-pin SPST (Normally Open) layout and "Mini ISO 280" format before purchase. Ensure the relay seats with a firm "click" to guarantee a vibration-resistant connection in your relay panel.

• [CORE SPECIFICATIONS] This 12V 40A 4-pin SPST power relay is a functional replacement for part numbers 15328864, 12193604, and 13503102. It is engineered with high-conductivity alloy terminals to maintain reliable electrical switching in your vehicle's power distribution center.
• [WIDE COMPATIBILITY] Designed to be compatible with Chevy Silverado (2003-2018), compatible with GMC Sierra (2015-2019), and fits Buick Enclave (2010-2017). This Mini ISO 280 format relay fits into factory fuse box sockets for terminal 15 and terminal 30 powertrain systems.
• [CRITICAL CIRCUIT FIX] Restores reliable power to solve engine no-start conditions, intermittent AC cooling loss, and clicking noises from the dashboard. Effectively clears common diagnostic trouble codes like P0615 and B1325 caused by relay contact fatigue or carbon buildup.
• [THERMAL RESILIENCE] Constructed with an upgraded heat-resistant housing and premium internal contact architecture to prevent circuit welding under high-amperage surges. Every unit maintains stable switching performance in extreme engine bay environments ranging from -40 to 125 degrees C.
• [REPLACEMENT AVAILABILITY] This set provides four professional-grade relays for a full electrical system overhaul or to keep as essential spares in your glovebox. The direct plug-and-play design allows for a secure fit in fuel pump, AC, or starter motor circuits to prevent roadside delays.