The Honda 91303-800-000 O-Ring (16MM) is a genuine OEM sealing component designed for an exceptionally wide range of Honda equipment, including BF-series outboard motors, E/EB/EG/EM/EX/EZ-series generators, GX-series horizontal shaft engines, GV-series vertical shaft engines, F/FG/FR/FC-series tillers, H-series riding mowers, and HP-series power carriers. As a genuine Honda part, this O-Ring (16MM) is manufactured to the exact dimensions and material specification Honda requires, ensuring a proper seal in the application it was designed for. Because this O-Ring (16MM) appears across many different machine families and serial ranges, always confirm part number 91303-800-000 against your machine's model and serial number using Honda's parts diagram before ordering.
Key Features
- Genuine OEM Sealing Integrity — manufactured to Honda's exact dimensional tolerances for this 16MM application, delivering the consistent compression and fluid-tight seal the original design requires
- Broad Cross-Equipment Fitment — listed for Honda BF-series outboard motors, E/EB/EG/EM/EX/EZ-series generators, GX and GV engines, F/FG/FR/FC tillers, H-series riding mowers, and HP power carriers, including BF115, BF150, BF250, EB2200, GX160, and many more
- Verify Before You Order — Honda supersedes and shares O-rings across serial ranges and machine families; match part number 91303-800-000 to your specific model and serial number in the fitment table to confirm this is the correct ring for your application
- Sealing Performance — a failed or degraded O-ring allows fluid or pressure to escape past the joint it seals, leading to leaks, loss of system pressure, or contamination; replacing a worn ring promptly protects the surrounding components
An O-ring is a simple loop of elastomeric material seated in a machined groove. When the joint is assembled and torqued, the ring is compressed slightly, filling the gap between mating surfaces and creating a fluid-tight or pressure-tight seal. On engines, generators, outboards, and other Honda equipment, O-rings appear wherever two fluid-carrying passages meet — such as at drain plugs, oil passages, water jackets, or fuel fittings. When an O-ring ages, hardens, or takes a set, it loses that compression and begins to leak; replacing it with the correct OEM part restores the seal and prevents fluid loss or contamination that can cause broader damage.
Part Details
| Part Number | 91303-800-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (16MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | E300 | 1000001-1092170 |
| Generator | EG650 | 2197973-9999999 |
| Generator | E40, E900, EB2500, EG1400, EG2200, EG2500, EM400, EM500, EM600, EM650, EM1600, EM1800, EM2200, EM2500, EX650, EX800, EX1000, EX2200, EZ1400, EZ2500 | All |
| Horizontal Shaft Engine | GX240 | 1287217-9999999 |
| Horizontal Shaft Engine | G35, G80, GX120, GX160 | All |
| Inverter Generator | EB2200 | All |
| Outboard Motor | BF40, BF50, BF60, BF75, BF90, BF115, BF135, BF140, BF150, BF175, BF200, BF225, BF250, BF350, BFP60 | All |
| Portable Outboard Motor | BF100 | All |
| Power Carrier | HP250, HP400 | All |
| Riding Mower | H3011 | All |
| Tiller | F28, F400, F401, F500, F501, FC600, FG400, FG500, FR500, FR600, FR700, FR800 | All |
| Vertical Shaft Engine | GV35 | 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.
