The Multiquip 6251518570 is a genuine OEM Return Tube SAA6D125E-5 DCA-300SSK4, designed specifically for the DCA-300SSK4 ultra-silent diesel generator equipped with the Komatsu SAA6D125E-5 engine. As a direct Multiquip OEM part, 6251518570 is manufactured to the exact dimensions and material specifications required for proper fuel or fluid return routing on this machine. Sourced directly through authorized Multiquip distribution, this tube ensures a correct, verified fit for DCA-300SSK4 units without adaptation or guesswork. DHS Equipment stocks this part ready to ship, so your generator gets back online with the right component the first time.
Key Features
- Genuine OEM Tube Construction — Manufactured to original Multiquip specifications for the SAA6D125E-5 engine, ensuring correct internal diameter, wall thickness, and end fitting compatibility for proper fluid routing.
- Direct-Fit Replacement — Engineered to connect at the same routing points as the original tube, allowing straightforward installation on DCA-300SSK4 generators without reworking fittings or brackets.
- Confirmed Fitment for DCA-300SSK4 — Verified for use with DCA-300SSK4 ultra-silent generator units running the Komatsu SAA6D125E-5 diesel engine platform.
- Protects Engine Fluid Circuit Integrity — A correctly seated return tube maintains proper fluid pressure and flow balance within the engine circuit; a cracked, kinked, or mismatched tube can result in fluid loss, pressure drop, or engine damage over time.
- Fuel System Safety Assurance — On diesel generator applications, return line integrity is critical to preventing uncontrolled fluid discharge; using the correct OEM tube supports safe, code-compliant operation of the DCA-300SSK4.
The return tube on the SAA6D125E-5 engine routes excess fuel or fluid back to the tank or reservoir after it has passed through the injection or cooling circuit, maintaining consistent pressure and preventing over-pressurization of downstream components. On a high-output diesel generator like the DCA-300SSK4, this tube operates under continuous thermal and pressure cycling, making material integrity essential to long-term engine health. When this tube cracks, hardens, or develops a leak, it can cause fuel loss, rough running, or — in a worst case — a fire risk near hot engine surfaces.
For fitment questions or to confirm this part is correct for your specific DCA-300SSK4 serial range, contact the DHS Equipment parts team for assistance.
Part Details
| Part Number | 6251518570 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Return Tube SAA6D125E-5 DCA-300SSK4 |
Compatibility & Fitment
| Name | Model |
|---|---|
| DCA-300SSK4 | DCA-300SSK4 |
| SAA6D125E-5 | SAA6D125E-5 |
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.
