The Nordyne 902993 blower assembly is the direct OEM replacement for the discontinued 903907

Smith 100168668 configurations

The 90-degree boot allows for a vertical or side-entry connection

Whether you are addressing a short-cycling furnace or a primary limit lockout

By providing accurate electrical load monitoring

Siemens Building Technology 658-166 Diaphragm 318518-761 The Nordyne 902993 blower assemblyEnsure your pneumatic valve assemblies are operating with peak pneumatic sensitivity by installing the Siemens 658 166 Replacement Diaphragm Kit. Specifically engineered for the Siemens Powertop 658 Series and Flowrite AP 599 4 inch pneumatic valve actuators, this 5 pack of heavy duty diaphragms is critical for maintaining precise pressure regulation and consistent valve modulation in steam and hydronic HVACR systems. Proactive replacement of these