The Honda 22521-V09-A01 Tensioner Arm is a genuine OEM component designed for HA4118 and HA4120 lawn tractors. As a direct Honda OEM part, it is manufactured to the same specifications as the original, ensuring correct fit and function in the drive system. Confirm your tractor's serial number against the fitment table before ordering, as Honda supersedes parts at specific serial breaks and the correct version depends on your unit's production range.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this tensioner arm matches the original component in geometry and material, ensuring the drive belt is held at the correct tension throughout its service life.
- Drive Belt Tension Control — maintains proper belt engagement in the drive system of HA4118 and HA4120 lawn tractors; a worn or bent tensioner arm allows belt slippage, leading to uneven drive performance and accelerated belt wear.
- Exact OEM Fitment — built specifically for HA4118 and HA4120 lawn tractors; installs in place of the original with no adaptation required.
- Check Your Serial Number — Honda updates part supersessions at serial number breaks, so verify your tractor's serial number against the compatibility table to confirm this is the correct tensioner arm for your unit.
The tensioner arm keeps the drive belt under consistent pressure within the drive system of the lawn tractor. By holding the belt firmly against its pulleys, it ensures smooth, consistent power transfer to the drivetrain. When the tensioner arm wears, bends, or fails, belt tension becomes inconsistent, causing slippage, erratic drive response, and premature belt failure — making timely replacement essential to keeping the tractor operating as intended.
Part Details
| Part Number | 22521-V09-A01 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Tensioner Arm |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Tractor | HA4118, HA4120 | All |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
