The Multiquip 13103ZH7000 is a genuine OEM Piston OS 0.50 Optional designed for CA-4-4H, MC44S, and CA4HM series equipment. As a direct Multiquip OEM component, this oversize piston is manufactured to the same standards as the original part, ensuring a correct fit without guesswork or modification. This part is confirmed for compatibility with International Walk-Behind Power Trowels, MQ Mixers, and Whiteman Walk-Behind Power Trowel models in the fitment list. When an engine rebuild is on the schedule, using the correct oversize piston — like the 13103ZH7000 — is the difference between a lasting repair and a repeat failure.
Key Features
- OEM Oversize Specification: — Cast to the OS 0.50 oversize dimension, matching the exact material grade and ring-groove geometry of the original Honda engine piston for a proper cylinder-wall fit after boring.
- Drop-In Rebuild Fit: — Engineered to install using standard engine rebuild procedures with no additional machining beyond the required cylinder bore to OS 0.50 specification.
- Broad Fitment Coverage: — Compatible with CA-4-4H, MC44S, and CA4HM models, covering multiple Multiquip equipment lines powered by the same Honda engine platform.
- Restored Compression and Power: — A correctly sized oversize piston restores proper compression, fuel combustion efficiency, and engine power output — all of which degrade when a worn cylinder is rebuilt with a standard piston.
- Genuine OEM Sourcing: — Sourced directly through Multiquip's OEM supply chain, ensuring the part number, dimensions, and metallurgy match what left the factory originally.
A piston is the reciprocating component inside the engine cylinder that converts combustion pressure into mechanical force, driving the crankshaft and powering the machine. Over time, cylinder walls wear and develop taper or out-of-round conditions; when a cylinder is bored out to restore a true surface, a standard piston is no longer the correct size — an oversize piston like this OS 0.50 unit is required to restore the proper piston-to-wall clearance. Running an engine with incorrect piston clearance leads to blow-by, oil consumption, loss of compression, and accelerated wear that shortens engine life.
Part Details
| Part Number | 13103ZH7000 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Piston OS 0.50 Optional |
Compatibility & Fitment
| Name | Model |
|---|---|
| International Walk-Behind Power Trowels | CA-4-4H |
| MQ Mixers | MC44S |
| Whiteman Walk-Behind Power Trowels | CA4HM |
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.
