Multiquip RE560048 DEF Header

The Multiquip RE560048 DEF Header is a genuine OEM component designed for the DCA150SSJU4F, DCA220SSJU4F, and DCA300SSJU4F super-silent generator series. As a direct OEM replacement, this part is sourced from Multiquip's authorized supply chain, ensuring it meets the exact specifications required by these Tier 4 diesel-powered units. Confirmed fitment includes both 50Hz and 60Hz configurations of the DCA220SSJU4F and DCA300SSJU4F, making the RE560048 the correct choice across the full lineup of these generators. DHS Equipment stocks this part to keep your equipment running with the right components in place.

Key Features

• Genuine OEM DEF System Integrity — Sourced directly through Multiquip's authorized parts program, this DEF header meets the precise flow and sealing requirements of Tier 4 emissions systems — where substitution with an incorrect part can compromise regulatory compliance.
• Direct-Fit Replacement — Engineered to connect to the existing DEF line routing on these generator models with no reworking of surrounding components or fittings.
• Broad Series Compatibility — Fits the DCA150SSJU4F, DCA220SSJU4F, and DCA300SSJU4F, including both 50Hz and 60Hz variants of the DCA220SSJU4F and DCA300SSJU4F.
• Maintains Emissions System Function — A correctly functioning DEF header ensures proper fluid delivery to the SCR aftertreatment system, keeping the generator within Tier 4 emissions compliance during operation.
• Emissions and Operational Safety — DEF system components are directly tied to EPA Tier 4 compliance; using the correct OEM part prevents fault codes, derate conditions, and potential regulatory issues on regulated jobsites.

The DEF (Diesel Exhaust Fluid) header is a key component within the selective catalytic reduction (SCR) emissions system found on EPA Tier 4 compliant diesel engines. It directs DEF fluid from the storage tank to the dosing module, where it is injected into the exhaust stream to break down nitrogen oxide (NOx) emissions into harmless nitrogen and water. If the DEF header fails or develops a leak, the SCR system can lose fluid pressure, triggering fault codes that may cause the engine to derate or shut down entirely — taking the generator offline until the fault 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.