Gravely Helix Assembly OEM #21902080

Restore your snow blower’s full auger performance with this Genuine OEM Helix Assembly (Part #21902080) from Gravely/Ariens. Also identified as the Asm-Helix-190X-36-48/67Ba, this factory-engineered replacement helix is precision-built to exact OEM specifications — ensuring the correct auger geometry, pitch, and material composition for efficient snow intake, transfer, and throwing on compatible Gravely and Ariens snow blower models. 

What the Helix Assembly Does:
The helix assembly is the spiral-shaped auger component at the heart of your two-stage snow blower’s intake system. As it rotates, the helical flighting grabs and moves snow from the ground toward the impeller, which then throws it through the discharge chute. A damaged, bent, worn, or broken helix dramatically reduces snow clearing capacity, causes uneven intake, and puts added stress on the gear case and drivetrain. Replacing it with a genuine OEM helix restores factory-rated clearing width and throwing performance.

Key Features:

• Genuine Gravely/Ariens OEM part — not aftermarket or generic
• Exact factory helix geometry, pitch, and dimensions for correct snow intake and transfer
• Engineered to work in precise coordination with the impeller and gear case
• Restores full clearing width and snow throwing capacity
• Durable OEM-grade construction built for demanding winter conditions
• Direct replacement — installs to factory fit without modification

Compatibility:
This helix assembly fits select Gravely and Ariens snow blower models. Confirm fitment using your model and serial number, found on the equipment label on the frame or housing. Always cross-reference against your unit’s Illustrated Parts List (IPL) before ordering to verify correct helix size and configuration for your specific machine.

Part Details:

• Part Number: 21902080
• OEM Brand: Gravely / Ariens
• Part Description: Asm-Helix-190X-36-48/67Ba
• Part Type: Helix Assembly (Auger)
• Application: Snow Blower
• Condition: New / Genuine OEM