The Multiquip 11425003591 is a genuine OEM Decomp Shaft Assembly designed for a wide range of Multiquip equipment including rammers, plate compactors, rollers, pumps, and power trowels. As a direct OEM replacement, this assembly meets the exact engineering specifications set by Multiquip, ensuring consistent fit and dependable operation across all compatible models. Confirmed fitment includes the MT-76D2, MT-86D2, MVC98D2, MVH-150D, MVH-150D2, MVH-200DA, MVH-304DSB, MVH-306D, MVH-306DS, MVH-402DSB, MRH-800DS, MDR-9DYE, and QP3TY. Sourced directly through DHS Equipment, the part is the part to specify when you need an exact-match replacement with no guesswork.
Key Features
- Genuine OEM Construction — Manufactured to Multiquip's original engineering tolerances, ensuring the decompression mechanism operates with the correct actuation force and timing for your engine.
- Drop-In Replacement — Machined to match the original shaft geometry and mounting configuration, allowing straightforward installation without reworking surrounding components.
- Broad Equipment Compatibility — Fits across multiple Multiquip product families including rammers (MT-76D2, MT-86D2), plate compactors (MVH and MVC series), the MRH-800DS roller, MDR-9DYE power trowel, and the QP3TY trash pump.
- Restores Cold-Start Performance — A properly functioning decomp shaft assembly reduces cylinder compression at startup, allowing the engine to turn over smoothly and start reliably — especially critical in field conditions.
- Engine Protection — Correct decompression function prevents excessive kickback and starter mechanism strain during startup, protecting both the operator and the engine's recoil or electric start components.
The decompression shaft assembly is an engine starting aid built into the cylinder head or valve train of small four-stroke engines. When engaged, it slightly opens an exhaust or dedicated decompression valve during the compression stroke, reducing the resistance the starter must overcome to turn the engine. Once the engine reaches firing speed, the decompression mechanism releases and normal compression is restored. A worn or damaged decomp shaft assembly results in hard starting, excessive pull-cord effort, or failure to start entirely — making timely replacement essential to keeping Multiquip equipment operational on the job.
Part Details
| Part Number | 11425003591 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Decomp Shaft Assembly |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Trowels | MDR-9DYE |
| Rammers | MT-76D2 |
| Rammers | MT-86D2 |
| Plate Compactors | MVC98D2 |
| Plate Compactors | MVH-150D |
| Plate Compactors | MVH150VD2 |
| Plate Compactors | MVH-304DSB |
| Rollers | MRH-800DS |
| MQ Trash Pumps | QP3TY |
| Plate Compactors | MVH-150D2 |
| Plate Compactors | MVH-200DA |
| Plate Compactors | MVH-306D |
| Plate Compactors | MVH-306DS |
| Plate Compactors | MVH-402DSB |
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.
