The Honda 91312-MG7-003 O-Ring (24.4X3.1) is a genuine OEM sealing component designed for the WT20 and WT30 water pumps. As a direct Honda OEM part, this O-Ring (24.4X3.1) is manufactured to the exact dimensional specification the pump requires to maintain a leak-free seal. Honda supersedes parts at serial breaks, so confirm your pump's serial number against the fitment table before ordering. This O-ring is a low-cost service item that plays a critical role in keeping your water pump running without fluid loss.
Key Features
- Exact Dimensional Fit — at 24.4 x 3.1 mm, this O-ring matches the precise groove dimensions Honda specifies for the WT20 and WT30 water pumps, ensuring a consistent, leak-free interface
- Genuine OEM Part — sourced directly from Honda, this component meets the same standards as the original installed at the factory, with no guesswork on sizing or material grade
- Pump Integrity — a properly seated O-ring prevents fluid bypass at the sealing point; a worn or compromised one can result in leaks that reduce pump output and cause premature wear
- Serial Number Verification Recommended — Honda updates OEM parts at production serial breaks, so cross-check your pump's serial number against the fitment table to confirm part number 91312-MG7-003 is correct for your unit
An O-ring is a circular elastomeric seal that sits in a machined groove to prevent fluid from escaping past a joint or connection point within the water pump. In a centrifugal water pump like the WT20 and WT30, maintaining a sealed fluid path is essential to sustaining suction, flow rate, and delivery pressure. When an O-ring degrades — through compression set, cracking, or swelling — the seal breaks down and fluid can bypass the joint, leading to reduced pump performance or visible leakage.
Part Details
| Part Number | 91312-MG7-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (24.4X3.1) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WT20, WT30 | 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.
Honda
Honda Part # 91309-425-003 - O-RING (24.4X3.1) - Genuine OEM Part
