The Honda 14100-Z4H-860 Camshaft Assembly is a genuine OEM Camshaft Assembly designed for GX120 horizontal shaft engines and WB20, WB30, WH15, and WH20 water pumps. As a direct Honda OEM component, this camshaft is manufactured to the exact profile and timing specifications the engine was designed around, ensuring the valvetrain operates exactly as intended. This assembly is compatible across a range of Honda-powered equipment, so confirm your unit's serial number against the fitment table before ordering — Honda supersedes parts at serial breaks, and verifying your serial number is the surest way to get the right component.
Key Features
- Genuine Honda OEM Construction — sourced directly from Honda, this Camshaft Assembly carries the exact lobe profile, journal dimensions, and timing geometry specified for the engine — no guesswork on valve lift or duration.
- Correct Valve Timing — a worn or damaged camshaft causes erratic valve timing, leading to hard starting, low compression, and loss of power; this replacement restores the full combustion cycle.
- Broad Fitment — fits GX120 horizontal shaft engines including those powering WB20, WB30, WH15, and WH20 water pumps, covering a wide range of Honda-powered equipment.
- Serial Number Verification Recommended — Honda updates part numbers at production serial breaks; check your machine's serial number against the compatibility table to confirm part number 14100-Z4H-860 is correct for your unit.
The camshaft is a precision-ground shaft that rotates in sync with the crankshaft and controls the opening and closing of the engine's intake and exhaust valves through a set of lobes. In an OHV engine like the GX120, the camshaft drives the valves via pushrods and rocker arms, with its rotational timing dictating exactly when each valve opens and closes relative to the piston stroke. When a camshaft wears, develops a flat lobe, or fails entirely, the engine loses compression, runs roughly, struggles to start, or may not run at all — making a correct-specification replacement essential to restoring normal operation.
Part Details
| Part Number | 14100-Z4H-860 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Camshaft Assembly |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX120 | All |
| Water Pump | WB20, WB30, WH15, WH20 | 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.
