Multiquip RE560897 DEF Pressure Line

The Multiquip RE560897 DEF Pressure Line is a genuine OEM component designed for the DCA Super-Silent generator series, including DCA150SSJU4F, DCA180SSJU4F, DCA220SSJU4F, and DCA300SSJU4F Tier 4 diesel units. As a direct OEM replacement, it is manufactured to the same specifications as the original line installed at the factory, ensuring a proper connection within the diesel exhaust fluid delivery system. This part is compatible across multiple Tier 4 Final variants in the DCA Super-Silent lineup, making it the correct choice for operators maintaining compliance on these generator models. Sourced through DHS Equipment, the RE560897 is backed by Multiquip's OEM parts program for full confidence in fitment and performance.

Key Features

• OEM-Grade DEF Compatibility — Manufactured to withstand the chemical properties of diesel exhaust fluid, preventing premature degradation that aftermarket lines may be susceptible to.
• Direct-Fit Routing and Connections — Matches the original line geometry and end fittings for the DCA Super-Silent series, connecting directly to the DEF pump and dosing module without modification.
• Broad DCA Series Coverage — Fits DCA150SSJU4F, DCA180SSJU4F, DCA220SSJU4F, and DCA300SSJU4F variants, covering multiple Tier 4 Final Super-Silent generator configurations.
• Uninterrupted DEF Delivery — A properly functioning pressure line maintains consistent DEF flow to the SCR aftertreatment system, keeping Tier 4 emissions controls operating correctly and preventing fault codes that can derate or shut down the generator.
• Emissions System Integrity — Correct DEF line specification is essential for maintaining EPA Tier 4 Final compliance on job-critical generator equipment; a failed or leaking line can trigger system faults and force unplanned shutdowns.

The DEF pressure line carries diesel exhaust fluid under pressure from the DEF pump to the dosing injector in the selective catalytic reduction system. This fluid is injected into the exhaust stream to chemically reduce nitrogen oxide emissions, which is required to meet Tier 4 Final emissions regulations. If the pressure line cracks, leaks, or loses its seal at either connection point, DEF flow is disrupted, the SCR system cannot function properly, and the generator's engine control system will typically register a fault and reduce or cut power output until the issue is resolved.

Part Details

Compatibility & Fitment

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.