- High-Quality Material: Constructed with durability in mind, this sending unit features a thread size of 3/8 inch and a spanner size of 17. It includes a hexagonal nut for straightforward installation, making it user-friendly. - Wide Compatibility: Designed to fit a range of engines including 265, 283, 305, 307, 350, 400, and 427, this product is ideal for cooling fans of sizes 10, 12, 14, and 16 inches, ensuring versatility across various applications. - Direct Replacement: This kit serves as a direct replacement for the original Blower Motor Resistor, guaranteeing seamless integration and reliable performance without the need for modifications. - Efficient Cooling Performance: It effectively regulates engine temperatures by engaging the fan at 185 degrees Fahrenheit and disengaging it at 175 degrees Fahrenheit. This function helps maintain optimal operating temperatures, enhancing overall engine performance. Use Scenarios: 1. Ideal for classic car restorations where maintaining engine temperature is critical for performance and longevity. 2. Perfect for daily drivers needing efficient cooling solutions to prevent overheating during summer months. 3. A reliable choice for performance modifications, ensuring that high-powered engines stay within optimal temperature ranges. This product is designed to meet and exceed the expectations of automotive enthusiasts and everyday drivers alike, providing essential cooling solutions with high compatibility and easy installation.