The Multiquip 11421003590 Decomp. Shaft Assembly is a genuine OEM component designed for MVH-200DA2, MVH206D, MVH-306DS2, and MVH-406DSY reversible plate compactors, as well as the MRH800DS2 walk-behind roller. As a direct Multiquip OEM part, 11421003590 is manufactured to the same specification as the original, ensuring a correct installation without guesswork. This assembly is a critical engine starting component — sourcing the correct OEM replacement matters for both starting reliability and long-term engine health. DHS Equipment supplies this part direct, so you can confirm fitment by model code and order with confidence.
Key Features
- OEM Decompression Spec: — Engineered to match the exact mechanical release pressure of the original decompression shaft, ensuring consistent engine cranking performance across all compatible models.
- Drop-In Installation: — Replaces the original shaft assembly position-for-position, with no modification to the engine housing or adjacent components required on supported models.
- Broad MVH and MRH Fitment: — Confirmed fit for MVH-200DA2, MVH206D, MVH-306DS2, MVH-406DSY, and MRH800DS2 equipment — covering multiple reversible plate compactor and roller applications.
- Protects Engine Starting System: — A worn or failed decompression shaft increases cranking resistance, stressing the recoil or electric start mechanism and accelerating wear on connected engine components.
- Genuine Multiquip OEM Part: — Sourced directly through the Multiquip authorized supply chain, carrying the full part number 11421003590 for accurate catalog verification at the point of purchase.
The decompression shaft assembly is a small but essential engine component that temporarily releases cylinder pressure during the starting stroke, reducing the effort needed to pull-start or crank the engine. On equipment like the MVH series reversible plate compactors, where the engine must fire reliably under demanding site conditions, a correctly functioning decompression system is what makes a smooth, consistent start possible. When this assembly wears or fails, the engine becomes significantly harder to start, and repeated forceful cranking can damage the recoil starter, flywheel components, or the crankshaft itself over time.
For fitment questions or to confirm compatibility with your specific unit, contact the DHS Equipment parts team directly.
Part Details
| Part Number | 11421003590 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Decomp. Shaft Assembly |
Compatibility & Fitment
| Name | Model |
|---|---|
| Plate Compactors | MVH-200DA2 |
| Plate Compactors | MVH206D |
| Plate Compactors | MVH-306DS2 |
| Plate Compactors | MVH-406DSY |
| Rollers | MRH800DS2 |
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.
