The Multiquip 100KDO75504 is a genuine OEM Motor Cover O Ring designed for the ST-4125 concrete pump. As a direct Multiquip OEM part, it is manufactured to the exact material and dimensional specifications required for a proper seal on the ST-4125 motor cover. Sourced directly through authorized Multiquip distribution, this is the correct replacement part for your machine.
Key Features
- OEM-Grade Seal Material — Manufactured to the precise compound hardness and compression profile required for a motor cover seal, ensuring consistent sealing performance under operating pressures.
- Exact-Fit Replacement — Dimensioned specifically for the motor cover interface on the ST-4125, seating correctly in the groove without trimming or adjustment.
- Confirmed ST-4125 Fitment — Verified genuine OEM part for the Multiquip ST-4125 swing tube concrete pump series.
- Leak Prevention — A properly seated motor cover O ring maintains a fluid-tight barrier, preventing hydraulic fluid or lubricant loss that can lead to motor damage or pump failure.
- Genuine Multiquip OEM Part — Backed by Multiquip's OEM parts program, ensuring the part you receive matches the original specification for part number 100KDO75504.
The motor cover O ring on the ST-4125 concrete pump forms a compression seal between the motor cover and the pump housing, preventing fluid from escaping around the joint. When this ring degrades, cracks, or loses its elasticity, it can allow hydraulic fluid or lubricant to leak, which compromises motor lubrication and can accelerate internal wear. Replacing a worn O ring promptly with the correct OEM part restores the sealed environment the motor depends on to operate at full capacity.
For fitment questions or help confirming this part is right for your ST-4125, contact the DHS Equipment parts team directly.
Part Details
| Part Number | 100KDO75504 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Motor Cover O Ring |
Compatibility & Fitment
| Name | Model |
|---|---|
| ST-4125 | ST-4125 |
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.
