The Multiquip 8972479890 is a genuine OEM Rubber Fuel Leak Hose DCA25USI 4LE2 designed for the DCA25USI ultra-silent diesel generator series. This is a direct OEM replacement sourced from Multiquip, ensuring the part matches the original specification used on DCA25USI units equipped with the Isuzu 4LE2 engine. Keeping the fuel leak-off circuit in proper working order is essential for clean, consistent engine operation, and this hose is the correct component to restore it.
Key Features
- OEM Fuel-Grade Rubber Construction — Manufactured to the same material and dimensional spec as the original hose, engineered to withstand diesel fuel contact and the heat cycles typical of the Isuzu 4LE2 engine environment.
- Direct-Fit Replacement for DCA25USI — Sized and routed to connect directly to the existing fuel leak-off circuit on the DCA25USI without cutting, splicing, or adapting existing fittings.
- Confirmed Fitment for DCA25USI Generators — Specific to the DCA25USI ultra-silent diesel generator platform running the Isuzu 4LE2 engine; verify your model and engine before ordering.
- Restores Fuel System Integrity — A cracked or hardened fuel leak-off hose allows uncontrolled fuel seepage, which can cause hard starting, rough idle, and unmetered fuel loss — replacing it restores proper fuel return flow and engine consistency.
- Fuel System Safety — A compromised fuel hose on a diesel generator poses a fire and contamination risk; using the correct OEM hose ensures the leak-off circuit seals and routes fuel safely back to the return circuit as designed.
The fuel leak-off hose carries excess fuel — fuel that lubricates the injectors but is not burned during combustion — back to the return circuit or tank. On Isuzu 4LE2-powered equipment like the DCA25USI, this hose is part of a low-pressure circuit that keeps the injection system primed and the injectors cool. When this hose cracks, hardens, or pulls loose at a fitting, fuel weeps into the engine bay, the system loses its prime, and the engine may become difficult to start or run erratically. Replacing it with the correct Multiquip 8972479890 restores the intended fuel return path and keeps the generator running cleanly.
Part Details
| Part Number | 8972479890 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Rubber Fuel Leak Hose DCA25USI 4LE2 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diesel Powered Generators | DCA25USI |
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.
Multiquip
Multiquip 8972172492 Pipe Fuel Nozzle Leak Off DCA25USI 4LE2
