Trane SHF1308 Shaft 326058-757 The 3-wire configuration is required

The 3-wire configuration is required for specific control board logic

For technicians troubleshooting a furnace control board replacement

providing a drop-in replacement that eliminates the guesswork of universal mounting

This model is identical to the ST500-1/2

and refrigerant lines align perfectly with Johnson Controls factory standards

Trane SHF1308 Shaft 326058-757 The 3-wire configuration is requiredWhen you are dealing with a vibration issue or a seized blower assembly, the Trane SHF1308 (also identified under the updated part number SHF01308) is the exact spec HVAC blower shaft required to restore balanced rotation. This 17x3 4 shaft is precision machined from high grade steel alloy to maintain straightness under heavy torque loads, preventing the premature bearing wear often seen with generic alternatives. Specifically engineered for Trane