The Multiquip 13012ZH8941 is a genuine OEM Piston Ring Set OS 0.50 Optional designed for a wide range of Multiquip and Whiteman equipment including WM70S/P mixers, MVC90H plate compactors, MC64P/S concrete mixers, QP205SH centrifugal pumps, and MP-series masonry saws. As a direct Multiquip OEM part, 13012ZH8941 is manufactured to the same tolerances and material specifications as the original rings installed at the factory. This oversized 0.50mm ring set is intended for use during engine rebuilds where cylinder bore wear has required machining to the first oversize dimension. Confirm your engine's bore size before ordering to ensure this OS 0.50 specification is the correct fit for your application.
Key Features
- Oversize Bore Compatibility: — Engineered to the OS 0.50 oversize specification, this ring set is matched to cylinders that have been bored out to the first oversize dimension during a rebuild.
- OEM Compression and Oil Control Tolerancing: — Manufactured to Multiquip OEM ring gap and tension specs, ensuring proper compression seal and oil film control from the first start after installation.
- Broad Equipment Fitment: — Compatible with WM70S/P mortar mixers, MVC90H plate compactors, MC64P/S concrete mixers, QP205SH centrifugal pumps, and MP-series masonry saws sharing the same engine platform.
- Engine Rebuild Integrity: — Using the correct OEM ring set during a bore-and-hone job restores compression and blow-by control, bringing engine power output back to its original operating level.
- Fuel System and Emission Compliance: — Proper ring sealing directly affects fuel combustion efficiency and exhaust emissions; installing OEM-spec rings keeps the engine operating within its designed parameters.
Piston rings seal the combustion chamber between the piston and the cylinder wall, maintaining compression pressure during the power stroke while preventing combustion gases from escaping into the crankcase. They also regulate oil consumption by scraping excess oil off the cylinder wall on each downstroke. When rings become worn, lose tension, or are installed at the wrong bore size, compression drops, oil burns off in the combustion chamber, and the engine loses power and increases fuel consumption. An oversize ring set like the 13012ZH8941 OS 0.50 is the correct choice when a cylinder has been bored to compensate for wear scoring, restoring the tight piston-to-wall fit that proper engine performance depends on.
Part Details
| Part Number | 13012ZH8941 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Piston Ring Set OS 0.50 Optional |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Mixers | WM70S/P |
| Vibrators | G55H |
| Saws | MP1455HP |
| Saws | MP120E |
| Saws | MP115E |
| Saws | MP1H |
| Centrifugal Pumps | QP205SH |
| Plate Compactors | MVC90H |
| MQ Mixers | MC64P/S |
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.
