The Multiquip EM50705 Throttle Spring 52 ST80 is a genuine OEM throttle spring designed for the ST80 swing tube concrete pump. As a direct OEM replacement sourced through Multiquip's authorized parts network, EM50705 is built to the same specifications as the original component installed at the factory. This spring is confirmed to fit ST80 series concrete pumps, making it a straightforward swap for technicians performing throttle system maintenance or repairs.
Key Features
- Genuine OEM Spring Tension: — Manufactured to the exact coil rate and free-length spec of the original throttle spring, ensuring the throttle mechanism returns to idle with the correct resistance.
- Direct ST80 Fitment: — Engineered specifically for the ST80 swing tube concrete pump throttle assembly, dropping in without modification to mounting points or retaining hardware.
- Consistent Throttle Return: — A properly tensioned throttle spring keeps engine speed response predictable and smooth during pumping operations, protecting both operator control and output consistency.
- Corrosion-Resistant Construction: — Built from spring-grade steel rated for the heat and vibration environment of a concrete pump engine bay, resisting set and fatigue over extended service cycles.
- Verified OEM Part EM50705: — Sourced directly from Multiquip's authorized parts supply, so you can order with confidence that the component matches the original ST80 throttle specification.
The throttle spring on a concrete pump is responsible for returning the engine throttle to its idle or rest position whenever operator input is released. Without adequate spring tension, the throttle can stick or fail to return fully, causing uncontrolled engine speed that makes precise pump output difficult to manage and can place unnecessary strain on the drivetrain. A fatigued or broken throttle spring on an ST80 will typically show up as sluggish throttle response, a throttle that hangs open, or an engine that will not settle back to idle — all conditions that should be addressed immediately to keep the machine operating safely and predictably.
Part Details
| Part Number | EM50705 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Throttle Spring 52 ST80 |
Compatibility & Fitment
| Name | Model |
|---|---|
| ST80 | ST80 |
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.
