Multiquip DZ118296 DEF Tank Header

The Multiquip DZ118296 DEF Tank Header is a genuine OEM component designed for DCA220SSJU4F3 super-silent diesel generators. As an authorized OEM replacement, this part meets the original design and material specifications set for the DCA220SSJU4F3 platform, ensuring a direct, correct-fit installation with no guesswork. Sourced directly from Multiquip, the part is the same part installed at the factory, giving you full confidence in fitment and long-term performance.

Key Features

• OEM-Grade DEF System Integrity — Built to the exact material and sealing specifications required for diesel exhaust fluid compatibility, preventing fluid degradation, contamination, or leaks at the tank header interface.
• Direct-Fit Installation — Engineered to match the OEM mounting configuration on DCA220SSJU4F3 generators, so the header seats and connects exactly as the original unit did.
• Confirmed Fitment — Compatible with DCA220SSJU4F3 super-silent diesel-powered generators operating at 60 Hz.
• Supports Proper DEF Flow — A correctly functioning DEF tank header maintains consistent fluid delivery to the selective catalytic reduction (SCR) system, keeping diesel emissions in check and the generator running within regulatory compliance.
• Emissions System Compliance — The DEF system is a regulated emissions component; using a genuine OEM header helps ensure the SCR system functions as required under Tier 4 Final emissions standards.

The DEF tank header serves as the central interface point on the diesel exhaust fluid tank, housing the connections for fluid delivery lines, sensors, and the pump module that feeds the selective catalytic reduction system. A properly sealed and functioning header ensures that DEF is drawn and delivered accurately to the SCR catalyst, which neutralizes nitrogen oxide emissions produced during diesel combustion. When the header fails — through cracking, seal degradation, or corrosion — it can disrupt DEF flow, trigger fault codes, and cause the generator to derate or shut down to remain within emissions compliance.

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.