Specifically designed for 58STA and 58STX series units

320030-751 is the direct replacement for 321250-301

For optimal performance in steam service

Maxitrol uses color-coding or plating (like this one) to distinguish pressure ranges

Lochinvar & A.O. Smith 100112697 Wiring Harness L99H008 Specifically designed for 58STA andThe Lochinvar & A. O. Smith 100112697 Wiring Harness is a critical OEM component designed for high efficiency commercial boilers and gas water heaters. This specialized blower wiring harness features a 61. 5 inch lead and integrated channels, ensuring precise signal transmission between the main control module and the combustion blower assembly. As a genuine HVAC replacement part, it is engineered to withstand the thermal stresses of continuous burner