The Honda 78122-YB0-004 Adjuster Shim is a genuine OEM component designed for WA15 and WB15 water pumps. As a direct Honda OEM part, it is manufactured to the same specifications as the original, ensuring an exact replacement when service or adjustment is required. This shim is built for WA15 and WB15 water pumps, and buyers should verify their unit's serial number against the fitment table to confirm the correct application before ordering.
Key Features
- Genuine OEM Precision — sourced directly from Honda, this shim matches the original thickness and dimensional tolerances required for proper adjustment in WA15 and WB15 water pumps
- Direct OEM Replacement — part number 78122-YB0-004 installs in place of the original without modification, restoring the correct running clearance or mechanical adjustment the pump depends on
- Serial Number Verification Recommended — Honda updates shim specifications at production breaks, so confirm your pump's serial number against the fitment table to ensure this is the right shim for your unit
- Correct Adjustment, Correct Output — even a small deviation in shim thickness can affect pump performance; using the specified OEM part keeps clearances within Honda's intended range
An adjuster shim is a precision-thickness spacer used to set or fine-tune the clearance between moving or mating components inside the water pump. By selecting the correct shim thickness, a technician brings internal tolerances into the range Honda specifies, which directly affects how smoothly and efficiently the pump operates. Using a shim that is too thick or too thin shifts those clearances out of range, which can lead to accelerated wear, reduced pump output, or premature component failure.
Part Details
| Part Number | 78122-YB0-004 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Adjuster Shim |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WA15, WB15 | 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.
