580473001 Bellows Flex Tube Replacement

High-Flexibility Construction: Manufactured from a durable, heavy-duty rubber composite designed to withstand constant bending and pivoting during extended leaf-blowing sessions.
Airtight Corrugated Design: Features precision-molded ridges that allow for a full range of motion while maintaining a 100% airtight seal to maximize CFM (Cubic Feet per Minute) output.
UV & Chemical Resistance: Engineered to resist degradation from prolonged sun exposure and contact with common lawn chemicals, fuels, and oils.
Enhanced Vibration Dampening: The flexible bellows structure helps absorb engine and air-flow vibrations, reducing operator fatigue and preventing stress cracks in the rigid plastic blower tubes.
Direct OEM Fitment: Designed to the exact dimensions of the original Ryobi factory part, ensuring a secure, leak-free connection with standard hose clamps.

This flex tube is a standard replacement for several generations of Ryobi backpack leaf blowers, including both gas and high-voltage cordless models:

Ryobi 38cc Gas Backpack: Specifically fits the RY38BP series.
Ryobi 40V Lithium-Ion Backpack: Compatible with models RY40404, RY40404NV, RY40404NVM, and RY40440.
Tube Diameter: Designed to interface with standard 2.5-inch to 3-inch rigid blower pipes (verify your specific model's pipe diameter).

Visible Cracks or Dry Rot: The rubber has become brittle and shows deep "checking" or cracks in the valleys of the corrugations.
Loss of Blowing Power: You notice air escaping from the flex section, significantly reducing the airspeed at the nozzle.
Flattened or Collapsed Sections: The tube has lost its structural integrity and "sucks in" or kinks during use, restricting airflow.
Torn Mounting Ends: The rubber has ripped at the point where the hose clamps tighten, making it impossible to keep the tube attached to the blower.
Excessive Noise: A whistling or hissing sound during operation, indicating a high-pressure air leak through a pinhole.

Soapy Water Hack: If the flex tube is difficult to slide onto the rigid plastic pipes, apply a small amount of liquid dish soap to the inside of the rubber ends as a temporary lubricant.
Clamp Inspection: Always inspect your metal hose clamps for rust or stripped threads. If they cannot be tightened firmly, replace them along with the flex tube to prevent the assembly from flying off under high pressure.
Align the Ridges: Ensure the tube is not twisted or pre-compressed when you tighten the clamps. It should sit in a "neutral" position to allow for maximum movement in all directions.
Full Range Check: Once installed, move the blower arm through its entire range of motion (up, down, left, right) to ensure the tube doesn't pull off or kink excessively.
Heat Warning: Ensure the flex tube is not touching any hot engine components or the exhaust muffler, as this will melt the rubber almost instantly.

Ryobi Brand