The Honda 91304-MJ0-003 O-Ring (15.8X2.4) is a genuine OEM sealing component designed for a range of Honda generators, tillers, and horizontal shaft engines, including the GX120 and GX160. As a factory-sourced part, this O-ring delivers the exact dimensional profile Honda engineers specified for a proper, leak-free seal. Confirm compatibility by checking part number 91304-MJ0-003 against your machine's serial number and parts diagram before ordering.
Key Features
- Genuine OEM Sealing Integrity — sourced directly from Honda, this O-ring meets the precise 15.8 x 2.4 mm cross-section required to seat correctly and maintain a positive seal in the application it was designed for
- Exact OEM Dimensions — the 15.8 x 2.4 mm profile is a specific Honda fitment; an incorrectly sized substitute will not seat properly, making an exact-dimension match critical for leak-free service
- Broad Honda Fitment — listed for E300, E40, E900, and EM400 generators, the F28 tiller, and GX120 and GX160 horizontal shaft engines, covering a wide range of Honda equipment in a single part number
- Serial Number Verification Recommended — Honda updates part specifications at production breaks, so always cross-reference your machine's serial number with the fitment table to confirm this is the correct O-ring for your unit
An O-ring is a precision loop of elastomeric material that creates a static or dynamic seal between two mating surfaces or within a fluid passage. When properly installed, it prevents oil, fuel, water, or air from escaping the joint it sits in, keeping the machine running at correct operating pressures and flow rates. As an O-ring ages, it can harden, compress permanently, or crack, leading to leaks that cause fluid loss, pressure drop, or contamination — making timely replacement an important part of routine service.
Part Details
| Part Number | 91304-MJ0-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (15.8X2.4) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | E300 | 1000001-1092170 |
| Generator | E40, E900, EM400 | All |
| Horizontal Shaft Engine | GX120, GX160 | All |
| Tiller | F28 | 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.
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