While the 49L03 is an auto-reset switch

Field Serviceable: Features a renewable composition disc and brass packing nut

For maximum motor reliability

4 Cv rating and a characterizing disk

Weil McLain 511-330-218 Pilot Assembly Kit Els PW 17895 While the 49L03 is anThe Weil McLain 511 330 218 Pilot Assembly Kit is a critical OEM component designed for intermittent pilot ignition systems in specific residential gas boilers. Engineered for high temperature durability, this kit is primarily compatible with Weil McLain CGa (Series 1 & 2), CG, CGx, and EG series boilers. It serves as a direct internal replacement to ensure precise flame rectification and reliable main burner light off. This assembly is specifically