The Honda Q14-0000-038 Valve is a genuine OEM replacement designed for WDP20 and WDP30 diaphragm water pumps. As the direct factory replacement, this valve is built to Honda's exact specifications, ensuring the pump operates as intended. Verify your pump's serial number against the fitment table to confirm part number Q14-0000-038 is the correct valve for your unit.
Key Features
- Genuine OEM Quality — sourced directly from Honda, this valve meets the same tolerances as the original, ensuring consistent flow control and sealing performance within the pump's fluid path.
- Direct Replacement Fit — designed to drop into WDP20 and WDP30 diaphragm water pumps without adaptation, restoring pump function to its original operating condition.
- Fitment Coverage — compatible with WDP20 and WDP30 diaphragm water pumps; check your serial number against the fitment table to confirm the correct application.
- Critical to Pump Output — a worn or damaged valve allows backflow and pressure loss, reducing the pump's ability to move fluid efficiently; replacing it restores full pumping capacity.
In a diaphragm water pump such as the WDP20 and WDP30, valves control the direction of fluid flow through the pump body. As the reciprocating diaphragm cycles through its intake and discharge strokes, the valves open and close in sequence — allowing fluid in on the intake stroke and pushing it out on the discharge stroke. When a valve wears, sticks, or fails to seat properly, the pump loses prime, output pressure drops, and flow rate falls off noticeably, making timely replacement essential to keeping the pump working at full capacity.
Part Details
| Part Number | Q14-0000-038 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Valve |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Diaphragm Water Pump | WDP20, WDP30 | 6000351-9999999 |
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.
