The Honda 90104-952-770 Tensioner Arm Bolt is a genuine OEM replacement designed for the HR21 lawn mower. Sourced directly from Honda, this bolt matches the original specification for part number 90104-952-770, ensuring a direct, no-hassle installation. Honda supersedes fasteners at production serial breaks, so confirm your mower's serial number against the fitment table before ordering.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this bolt meets the exact thread, head geometry, and dimensional requirements of the original hardware.
- Direct Fitment for the HR21 — designed specifically for HR21 lawn mowers; consult the fitment table to verify your serial range.
- Correct Tensioner Arm Retention — a properly torqued tensioner arm bolt holds the tensioner arm securely in position, maintaining correct belt or drive tension; a loose or damaged bolt allows the arm to shift and disrupts drive system performance.
The tensioner arm bolt secures the tensioner arm within the drive system of the HR21 lawn mower. The tensioner arm itself maintains the correct amount of pressure on the drive belt or blade engagement mechanism; without a properly fastened bolt holding it in place, the arm can move out of position, causing belt slip, uneven tension, or loss of drive engagement. Replacing a worn or damaged bolt with the correct OEM hardware restores proper tensioner arm function and keeps the drive system operating as Honda intended.
Part Details
| Part Number | 90104-952-770 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Tensioner Arm Bolt |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Mower | HR21 | 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.
