The Multiquip DZ114738 DEF Suction Jumper Line is a genuine OEM component designed for DCA300SSJU4F3 and DCA300SSJU4F3PD super-silent diesel generators. Sourced directly from Multiquip, this line delivers exact-match fitment for both standard and PD-configured 60Hz units without adaptation. Keeping the DEF delivery circuit intact is critical to Tier 4 emissions compliance, and the part ensures the suction path between the DEF tank and dosing system stays sealed and flow-consistent. DHS Equipment supplies this part as a direct OEM replacement so your generator stays on spec and on schedule.
Key Features
- Genuine OEM Construction: — Manufactured to Multiquip's original material and dimension specs for the DEF suction circuit, ensuring correct chemical compatibility with diesel exhaust fluid.
- Direct-Connect Fitment: — Routes and connects exactly as the original line, matching factory port sizing and routing path on DCA300SSJU4F3 series generators.
- Confirmed Compatibility: — Fits DCA300SSJU4F3 and DCA300SSJU4F3PD models in both standard and 60Hz configurations.
- Emissions System Integrity: — A intact suction line maintains consistent DEF flow to the SCR system, keeping the generator's Tier 4 Final emissions controls fully operational.
- Tier 4 Compliance Critical: — A cracked or blocked DEF suction line can trigger fault codes, derate engine output, or disable the generator entirely — this OEM line restores full system function.
The DEF suction jumper line transfers diesel exhaust fluid from the onboard storage tank to the dosing pump that feeds the selective catalytic reduction system. In Tier 4 Final diesel generators like the DCA300SSJU4F3 series, this fluid pathway is essential — without a consistent DEF supply, the SCR system cannot neutralize nitrogen oxide emissions, and the engine's electronic controls will typically reduce power or shut the unit down to maintain compliance. When this line develops a leak, blockage, or connection failure, DEF starvation is the immediate result, and fault codes will follow. Replacing the part restores the suction circuit to full integrity and keeps the emissions system functioning as designed.
For questions about fitment or to confirm this is the correct part for your machine, contact the DHS Equipment parts team directly.
Part Details
| Part Number | DZ114738 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | DEF Suction Jumper Line |
Compatibility & Fitment
| Name | Model |
|---|---|
| Super-Silent Generators | DCA300SSJU4F3 |
| Super-Silent Generators | DCA300SSJU4F3PD |
| Diesel Powered Generators | DCA300SSJU4F3PD 60Hz |
| Diesel Powered Generators | DCA300SSJU4F3 60Hz |
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.
