the 19551 is the direct equivalent to the 3ARR3MARS551

This linkage kit ensures precise stroke transmission

Key Benefits Universal Shaft Compatibility: Fits both 7/16" and 1/2" shafts

When troubleshooting a pilot that won't stay lit

always verify the burner orifice and gas valve pressure settings match the equipment's fuel specification during installation

White-Rodgers FR2000-100 Media Filter Els PW 17895 the 19551 is the directThe White Rodgers FR2000 100 is an industrial grade MERV 8 media filter designed for high capacity applications requiring up to 2000 CFM of airflow. Built with a nominal 20"x26"x5" profile, these deep pleated filters offer significantly more surface area than standard 1 inch variants, effectively reducing static pressure and extending the service life of HVAC air cleaner components. This 3 pack media filter is engineered specifically for the ACB2000