Dual Speed Electric Fan Harness Relay Kit for Silverado Sierra 34\" Radiator For Sale

Upgrade your vehicle’s cooling performance with the 674-00923 Dual Speed Electric Fan Control Wiring Harness Kit, a complete stand-alone solution designed for seamless electric fan conversions. This kit delivers reliable temperature regulation and enhanced engine protection.

Engineered specifically for selected models with 34-inch wide radiators and gasoline engines. It provides dual-speed operation—activating fans at low or high speed depending on engine temperature—to ensure optimal cooling in all conditions, from daily driving to towing and off-road use.

• Attention: Our dual-speed fan control harness relay kit is designed for 34-inch radiators. If there are issues with wiring pins or connections, please refer to Main Image 8. If you encounter installation issues with harness, please refer to Main Image 7
• Fitment: Compatible with Chevrolet Silverado 1500/2500 Classic, Avalanche 1500/2500, Suburban 1500/2500; GMC Sierra 1500/2500/3500 Classic, Yukon; Cadillac Escalade EXT/ESV. Please refer to the pictures for detailed models before purchasing
• Replacement Part Number: 674-00923. Precisely manufactured to OE factory standards for durability and reliability. Each wire and terminal is rigorously tested before shipment to guarantee lasting performance, safety, and dependable operation
• Enhanced Efficiency: Designed to support both low and high-speed operation of dual electric fans, this harness kit ensures optimal temperature regulation under all driving conditions. Ideal for upgraded or retrofitted cooling systems
• Durable & Heat-Resistant Harness: Made with automotive-grade wiring and weatherproof components for reliable performance in harsh engine bays. Complete stand-alone design with relays, fuses, and connectors for simple fan wiring installation