Source1 107110004 Blower Key 1/4 Inch Square X 6.3 Inches S1-00107110004

Product Description

The SOURCE1 107110004 is a blower key designed to secure blower wheels and fan assemblies to motor shafts in HVAC equipment. This small but critical component keeps the blower wheel locked in position on the shaft, preventing slippage during operation. When a blower key fails, shears, or goes missing, the blower wheel can spin freely on the shaft, resulting in no airflow, overheating, and potential system shutdown. Replacing a worn or damaged blower key restores proper shaft-to-wheel engagement and gets the unit back to full performance. This key measures 1/4 inch square in cross-section and 6.3 inches in length, making it compatible with a range of York and SOURCE1 air handlers, furnaces, and fan coil units that use this shaft size. HVAC technicians working on York residential and light commercial equipment will recognize this as a standard service part used during blower motor replacements, blower wheel installations, and preventive maintenance procedures. The square profile seats firmly into the keyway slot machined into both the motor shaft and the blower wheel hub, creating a positive mechanical connection that transfers rotational force evenly. Keeping this part on the service vehicle or in the shop stock ensures fast repairs without waiting on special orders. This blower key is also cross-referenced under the York part number S1-00107110004, making it easy to identify when pulling service records or referencing manufacturer documentation. Whether you are performing a warranty repair, a standard service call, or a full blower assembly replacement, having the correct key on hand is essential for a clean, reliable installation.

• Secures blower wheel to motor shaft, preventing slippage and loss of airflow
• Measures 1/4 inch square cross-section by 6.3 inches in length for correct shaft fitment
• Compatible with York and SOURCE1 air handlers, furnaces, and fan coil units

Product Highlights

The SOURCE1 107110004 blower key is a precise-fit replacement part that restores proper mechanical connection between the motor shaft and blower wheel, ensuring reliable airflow and system performance in York HVAC equipment.

Product Information

Standard Information

• Brand: SOURCE1
• Manufacturer Part Number: 107110004

Technical Specifications

• Cross-Section: 1/4 inch square
• Length: 6.3 inches
• Component Type: Blower Key
• Compatible Equipment: York and SOURCE1 air handlers, furnaces, and fan coil units
• Reference Part Number: S1-00107110004