The Honda 91204-952-772 Oil Seal (18X38X6) is a genuine OEM component designed for HR21 and HRA21 lawn mowers. As a direct Honda OEM part, it is manufactured to the same specification as the original seal installed at the factory, ensuring a proper fit without modification. Buyers should confirm their mower's serial number against the fitment table, as Honda supersedes seals at production breaks, and part number 91204-952-772 covers specific serial ranges within the HR21 and HRA21 lines.
Key Features
- Genuine OEM Sealing Performance — manufactured to Honda's original specification, delivering the oil retention and dimensional accuracy that a rotating shaft seal demands in mower service
- Exact Dimensional Fit — sized at 18 x 38 x 6 mm to seat correctly in the bore and on the shaft without reworking, keeping the installation straightforward
- HR21 and HRA21 Fitment — listed for Honda HR21 and HRA21 lawn mowers; verify your serial number against the fitment table before ordering, as Honda issues supersession breaks across production runs
- Prevents Oil Loss — a functioning seal keeps oil contained at the shaft exit point; a worn or hardened seal allows oil to leak past the shaft, leading to low oil levels and potential engine damage over time
An oil seal closes the gap between a rotating shaft and its housing, preventing lubricating oil from escaping the engine while keeping dirt and debris out. On HR21 and HRA21 lawn mowers, the shaft seal plays a quiet but essential role in maintaining proper oil level and protecting internal components from contamination. When the seal deteriorates — through heat cycling, age, or wear — it loses its ability to hold the oil in, resulting in visible leaks and, if left unaddressed, accelerated wear on the bearing surfaces it was protecting.
Part Details
| Part Number | 91204-952-772 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Oil Seal (18X38X6) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Mower | HR21, HRA21 | 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.
