Replacement infinite control switch for electric range surface burner, designed to restore variable heat control for an 8 inch surface element. Why you need this part Restores precise, variable heat settings when a surface burner no longer responds or is stuck on a single setting. Saves time and expense compared to replacing the entire cooktop or range control assembly. Direct replacement that fits original mounting and terminal locations for straightforward repairs. Key features and attributes Function: Infinite control switch for electric range surface burner, provides adjustable power levels for an 8 inch element. Compatibility: Compatible with Whirlpool part numbers WP3191050, 3191050, 4454540, 504138, and AH339378. Intended as a direct replacement for ranges that use these parts. Size: Designed for use with 8 inch surface elements. Fit and performance: Manufactured to match original equipment specifications for form fit and function, enabling consistent burner control and smooth adjustment. Installation: Simple swap of the existing infinite switch. Follow standard safety procedures and disconnect power before servicing the appliance. Practical use scenarios Home : a failed infinite switch to restore adjustable heating on an 8 inch burner and the range to normal operation. Technician service calls: Keep on hand as a commonly needed replacement part for servicing residential electric ranges that list the compatible part numbers. Appliance refurbishment: Use when rebuilding or refurbishing a range to ensure the 8 inch surface element has a reliable control switch. Included compatibility reference Compatible with ranges requiring part numbers WP3191050, 3191050, 4454540, 504138, AH339378. Note: Verify your existing part number before ordering to confirm compatibility.