The Honda Q14-0000-063 Flat Washer (12MM) is a genuine OEM replacement designed for WDP20 and WDP30 diaphragm water pumps. As an authentic Honda part, it is manufactured to the same standard as the original hardware that left the factory, ensuring a correct fit without guesswork. This flat washer is compatible with both WDP20 and WDP30 models — confirm your pump's serial number against the fitment table to make sure this is the right variant for your machine. Sourcing genuine OEM hardware keeps your pump running with components built to Honda's own specifications.
Key Features
- Genuine OEM Hardware — sourced directly from Honda, matching the original 12MM flat washer specification used on WDP20 and WDP30 diaphragm water pumps at the point of manufacture.
- Direct Replacement Fit — drops in as an exact replacement for the original, with no trimming or adjustment needed to seat correctly.
- Fits WDP20 and WDP30 Diaphragm Water Pumps — confirmed fitment across both models in Honda's WDP diaphragm pump line.
- Check Your Serial Number — Honda updates parts at specific production breaks, so verify your pump's serial number against the fitment table before ordering to confirm this is the correct washer for your unit.
A flat washer distributes the clamping load of a fastener across a broader surface area, preventing the bolt head or nut from pulling through or deforming the material it bears against. On a diaphragm water pump like the WDP20 and WDP30, where a reciprocating diaphragm driven by a crank and connecting rod generates repeated mechanical stress, proper load distribution from every hardware component helps maintain the integrity of assembled joints over time. A worn, missing, or incorrect washer can lead to uneven clamping, fastener loosening, or damage to mating surfaces — making it worth replacing with the correct Honda OEM part.
Part Details
| Part Number | Q14-0000-063 |
|---|---|
| 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.
