The Multiquip M4310500903 Lower Radiator Hose is a genuine OEM component designed for DCA220SSJ, DCA220SSJU, and DCA180SSJU ultra-silent diesel generators. As a factory-sourced part, it is manufactured to the exact dimensions and material specifications required for correct fitment and long-term cooling system integrity. Sourced directly through authorized Multiquip supply channels, M4310500903 ensures you are installing the right hose the first time. Confirm your generator model code against the fitment list before ordering to guarantee compatibility.
Key Features
- Genuine OEM Construction — Molded from reinforced rubber compound engineered specifically for the thermal and pressure demands of diesel generator cooling systems, not a generic hose cut to size.
- Exact-Profile Replacement — Pre-formed to match the factory routing path on DCA-series generators, allowing the hose to seat correctly on both the engine block and radiator lower neck without stretching or kinking.
- Confirmed Fitment — Verified for DCA220SSJ, DCA220SSJU, and DCA180SSJU ultra-silent diesel generators using Multiquip OEM part number M4310500903.
- Cooling System Integrity — A correctly seated lower radiator hose maintains steady coolant flow from the radiator to the engine; a cracked or collapsed hose starves the engine of coolant and risks overheating under sustained load.
- Pressure-Rated for Continuous Duty — Designed to handle the cyclical pressure fluctuations of a working diesel cooling circuit, resisting softening, swelling, and collar leaks over extended run hours.
The lower radiator hose carries cooled coolant from the bottom of the radiator back to the engine's water pump inlet, completing the closed-loop cooling circuit. It operates under continuous thermal cycling and coolant pressure, making material quality and dimensional accuracy critical — a hose that is even slightly undersized at the collar will weep coolant under load. When a lower radiator hose deteriorates, cracks, or collapses internally, coolant flow is restricted or lost entirely, leading to rapid engine temperature rise and potential shutdown of the generator set.
Part Details
| Part Number | M4310500903 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Lower Radiator Hose |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diesel Powered Generators | DCA220SSJ |
| Diesel Powered Generators | DCA220SSJU |
| Diesel Powered Generators | DCA180SSJU |
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.
