The Honda 94109-12000 is a genuine OEM Drain Plug Washer (12MM) designed for an exceptionally wide range of Honda equipment, including horizontal and vertical shaft engines such as the GX160 and GX390, generators including the EB5000 and EM5000, water pumps such as the WT30 and WB20, outboard motors including the BF50 and BF115, tillers, snow blowers, and lawn tractors. As a genuine Honda part, it is manufactured to the same specification as the original, ensuring a correct seal every time the drain plug is removed and reinstalled. This washer is listed for a very broad set of Honda equipment — always verify your model and serial number against the fitment table before ordering to confirm this is the correct part for your unit.
Key Features
- Genuine OEM Sealing — a Honda-original washer delivers the sealing performance the drain plug was designed around, preventing oil or fluid seepage at the drain point during operation
- Direct-Fit Replacement — sized at 12MM to match the original drain plug geometry on covered Honda equipment, this washer installs without modification
- Exceptionally Broad Compatibility — listed for Honda engines, generators, water pumps, outboard motors, tillers, snow blowers, and lawn tractors; confirm your model against the fitment table before ordering
- Serial Number Verification Recommended — Honda supersedes parts at production breaks, so cross-check your unit's serial number against the compatibility table to ensure part number 94109-12000 is current for your machine
A drain plug washer is the small sealing component that sits between the drain plug and the oil or fluid sump on an engine or machine. Its job is to create a leak-free seal when the plug is torqued into place, preventing oil from weeping past the threads during normal operation. Over time — particularly after repeated drain-and-refill service intervals — the washer can become deformed or lose its sealing ability, allowing slow oil leaks that can lead to low fluid levels if left unaddressed. Replacing this washer during every oil change is a straightforward precaution that protects the engine and equipment from the consequences of undetected fluid loss.
Part Details
| Part Number | 94109-12000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Drain Plug Washer (12MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Compact Tractor | H6522 | All |
| Generator | EMS4000, EMS4500 | 1011783-9999999 |
| Generator | E3500, E4500, ES4500 | 1269742-9999999 |
| Generator | EX4500 | 1463926-9999999 |
| Generator | EX3300 | 1518602-9999999 |
| Generator | E300, E900, E1500, E2500, EB12, EB3000, EB3500, EB3800, EB4000, EB5000, EB6500, ED1000, EG1000, EG1400, EG1500, EG2200, EG3500, EG4000, EG5000, EG6500, EL5000, EM1600, EM1800, EM2200, EM3000, EM3500, EM3800, EM4000, EM5000, EM6000, EM6500, EN2000, EN2500, EN3500, EN5000, ER400, ER1500, ES3500, ES6500, EV4000, EX800, EX5500, EZ3500, EZ5000 | All |
| Horizontal Shaft Engine | G30, G35, G42, G65, G80, G100, G150, G200, G300, G400, GC135, GC160, GC190, GS65, GS160, GS190, GX110, GX120, GX140, GX160, GX200, GX240, GX270, GX340, GX360, GX390, GX640 | All |
| Inverter Generator | EU7000 | 1006366-9999999 |
| Inverter Generator | EB2800, EB7000, EG2800, EM7000, EU6500 | All |
| Lawn Mower | HR21, HRA21, HRM195 | All |
| Lawn Tractor | H4013, H4514, H4518, HT3810, HT3813, HT4213 | All |
| Multi-Purpose Tractor | H5013, H5518, RT5000 | All |
| Outboard Motor | BF50, BF115, BF130 | All |
| Portable Outboard Motor | BF4, BF5, BF6 | All |
| Riding Mower | H3011 | All |
| RV Generator | EV4010, EV6010, EVD4010 | All |
| Single-Stage Snow Blower | HS35, HS520, HS720 | All |
| Tiller | FG400, FG500 | 1000001-1108026, 1108037-9999999 |
| Tiller | F28, F400, F500, FR500, FR600, FR650, FR700, FR750, FR800, FRC800 | All |
| Two-Stage Snow Blower | HS50, HS70, HS522, HS622, HS828, HS928, HS1132, HS1332, HS1336, HSM1336, HSS928, HSS1332 | All |
| Vertical Shaft Engine | GV35 | 1015921-9999999 |
| Vertical Shaft Engine | GV150 | 2025878-9999999 |
| Vertical Shaft Engine | GCV160, GCV190, GSV190, GV200 | All |
| Water Pump | WA15, WA20, WA30, WB15, WB20, WB30, WN20, WN30, WT20, WT30, WT40 | All |
| Welder Generator | EW170 | 1011783-9999999 |
| Welder Generator | EW171, EXW171 | 1463926-9999999 |
| Welder Generator | EW140 | 1518602-9999999 |
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.
