The Multiquip 13103ZH7000 is a genuine OEM Piston OS 0.50 designed for a wide range of Multiquip and portfolio-brand equipment, including plate compactors such as the MVC-64H, MVC-64HW, MVH-R60H, and MVH-R60W; concrete mixers including the MC-42S, EC-42S, MC44S, CMS-44S, CMS-4S, and WC-42S; diaphragm pumps including the MQ-D206H, MQD2H, MQD2D3H, D306, MQ-D306HA, MQ-D305, SDP-2, SDP-3, and CA90749; centrifugal pumps including the CP-20H, QP2H, and QP-204H; and walk-behind power trowels including the CA-4-4H, CA4.4HM, CA4HC, and CA4HM. As a genuine OEM part, 13103ZH7000 is manufactured to the same specification as the original component installed at the factory, ensuring an exact dimensional match for a 0.50mm oversize bore. Sourced direct from Multiquip, this piston is the correct replacement when an engine block has been bored oversize during a rebuild.
Key Features
- Genuine OEM Oversize Specification — Manufactured to the precise 0.50mm oversize dimension required after cylinder bore resurfacing, maintaining correct compression ratio and ring seal in the rebuilt engine.
- Direct Engine Rebuild Replacement — Matches original piston geometry, pin bore, and ring groove dimensions so it installs with OEM rings and pin hardware without rework.
- Broad Equipment Compatibility — Verified fitment across MVC and MVH plate compactors, MC/EC/CMS/WC concrete mixers, MQ and SDP diaphragm pumps, QP and CP centrifugal pumps, and CA-series walk-behind trowels.
- Restored Compression and Power Output — A correctly sized piston seals combustion gases fully, restoring the engine's rated power and preventing the oil consumption and blow-by caused by a worn or undersized piston.
- Engine Safety Integrity — Using the correct oversize piston during a rebuild prevents piston-to-wall contact failures that can cause sudden engine seizure, protecting both the equipment and the operator.
The piston is the reciprocating component inside the engine cylinder that converts combustion pressure into crankshaft rotation. When a cylinder bore becomes worn or scored, it is machined to a slightly larger diameter — in this case 0.50mm over stock — and an oversize piston like the part is required to restore the correct wall clearance. Without the proper oversize piston, combustion gases leak past the rings, causing loss of power, excessive oil burn, and eventual engine failure. Installing 13103ZH7000 during an engine rebuild brings the cylinder back to correct operating clearances and extends the service life of the rebuilt unit.
Confirm your model number and engine bore size before ordering. For fitment questions on part number 13103ZH7000, contact DHS Equipment — our team is ready to help you get the right part for your rebuild.
Part Details
| Part Number | 13103ZH7000 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Piston OS 0.50 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Concrete Mixers | MC-42S |
| Plate Compactors | MVC-64H |
| Plate Compactors | MVC-64HW |
| Plate Compactors | MVH-R60W |
| Concrete Mixers | EC-42S |
| MQ Mixers | MC44S |
| MQ Diaphragm Pumps | MQ-D206H |
| Diaphragm Pumps | MQD2H |
| MQ Diaphragm Pumps | D306 |
| MQ Diaphragm Pumps | MQ-D306HA |
| STOW Diaphragm Pumps | SDP-2 |
| STOW Centrifugal Pumps | CP-20H |
| Centrifugal Pumps | QP2H |
| International Walk-Behind Power Trowels | CA-4-4H |
| Power Trowels | CA4.4HM |
| Plate Compactors | MVH-R60H |
| Concrete Mixers | CMS-44S |
| Concrete Mixers | CMS-4S |
| Concrete Mixers | WC-42S |
| C and CA Series | CA4HC |
| Diaphragm Pumps | MQD2D3H |
| MQ Diaphragm Pumps | MQ-D305 |
| STOW Diaphragm Pumps | SDP-3 |
| MQ Centrifugal Pumps | QP-204H |
| Whiteman Walk-Behind Power Trowels | CA4HM |
| STOW Diaphragm Pumps | CA90749 |
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.
