The Honda Q14-0000-075 Flat Washer (12MM) is a genuine OEM replacement designed for WDP20 and WDP30 diaphragm water pumps. As a direct Honda OEM part, it is manufactured to the exact dimensions Honda specifies, ensuring correct load distribution and a secure, flush fit in the assembly. This washer is the right choice when servicing or reassembling a WDP20 or WDP30 pump and you need to replace hardware to factory specification.
Key Features
- Genuine OEM Honda Hardware — sourced directly from Honda, this washer meets the exact dimensional requirements called out in the WDP20 and WDP30 parts catalogue, so there is no guesswork on sizing.
- Correct Load Distribution — a properly sized 12MM flat washer spreads clamping force evenly across the mating surface, helping fasteners hold their torque through the reciprocating vibration a diaphragm pump generates during operation.
- Diaphragm Pump Fitment — confirmed fit for WDP20 and WDP30 diaphragm water pumps; check your pump's serial number against the fitment table to verify this is the correct washer for your serial range.
A flat washer is a simple but important piece of hardware in any assembly: it sits between a fastener and the surface it clamps, distributing the load over a wider area and preventing the fastener from pulling through or marring softer material. In a diaphragm water pump like the WDP20 and WDP30, where a reciprocating diaphragm is driven by a crank and connecting rod to move water, vibration is constant during operation, and correctly sized hardware helps keep assembled components tight and properly aligned. Using the wrong size washer — or a worn or missing one — can allow fasteners to loosen over time, leading to misalignment or leaks at critical joints.
Part Details
| Part Number | Q14-0000-075 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Flat Washer (12MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Diaphragm Water Pump | WDP20, WDP30 | 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.
