The Honda 90105-YD4-003 Casing Setting Bolt is a genuine OEM fastener designed for the WT40 water pump. As a direct Honda replacement, this bolt matches the original specification the pump shipped with, ensuring the casing seats and holds the way Honda intended. If you are restoring a WT40 to working order or replacing hardware lost or damaged during service, part number 90105-YD4-003 is the correct bolt for the job.
Key Features
- Genuine OEM Hardware — sourced directly from Honda, this bolt matches the original dimensions and thread specification the WT40 casing requires
- Exact Replacement — designed specifically for the WT40 water pump, this part reinstalls without modification or guesswork
- Serial Number Awareness — Honda updates parts at production breaks, so confirm your WT40 serial number against the fitment table before ordering
The casing setting bolt secures the pump casing on the WT40 water pump, holding the pump housing together under the vibration and hydraulic loads generated during operation. A loose or missing bolt can allow the casing to shift, which disrupts the internal running clearances and compromises pumping efficiency. Replacing a damaged or stripped bolt with the correct Honda fastener restores the casing assembly to its proper clamped condition and keeps the pump running as designed.
Part Details
| Part Number | 90105-YD4-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Casing Setting Bolt |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WT40 | 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.
