Multiquip 8982318982 DEF Dosing Module

The Multiquip 8982318982 DEF Dosing Module is a genuine OEM component designed for DCA125SSIU4F and DCA70SSIU4F super-silent diesel generators. As a direct OEM replacement, this module meets the exact specifications required to keep Tier 4 emissions systems operating correctly on these generator models. If your unit is showing DEF system faults or failing emissions compliance checks, replacing the dosing module with the correct OEM part is the straightforward fix. DHS Equipment stocks this part to get your generator back online without guesswork.

Key Features

• OEM-Matched Dosing Precision — Manufactured to the exact flow rate and electrical specifications required by the Tier 4 aftertreatment system, ensuring accurate DEF injection every cycle.
• Direct Drop-In Replacement — Engineered to install in the same mounting position and connect to the same harness as the original module, eliminating fit issues on compatible units.
• Confirmed Fitment — Compatible with DCA125SSIU4F and DCA70SSIU4F super-silent generator models; verify your model code before ordering.
• Emissions System Integrity — A functioning dosing module is essential for correct SCR operation; a failed unit will trigger fault codes, derate engine output, or prevent the generator from running.
• Regulatory Compliance — Proper DEF dosing is required for Tier 4 emissions compliance; using the correct OEM module helps ensure your equipment meets applicable environmental regulations on the jobsite.

The DEF dosing module is a core component of the Selective Catalytic Reduction (SCR) emissions system fitted to Tier 4 diesel engines. It meters and injects precise amounts of Diesel Exhaust Fluid into the exhaust stream, which reacts with engine-out NOx emissions to convert them into harmless nitrogen and water. When the dosing module fails or becomes blocked, DEF delivery stops, the SCR system triggers fault codes, and the engine control unit will typically derate or shut down the generator to prevent emissions violations — making prompt replacement critical to restoring full operation.

For questions about fitment or part compatibility, contact the DHS Equipment team directly.

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.