Multiquip 8983243390 Dosing Control Unit

The Multiquip 8983243390 Dosing Control Unit is a genuine OEM component designed for the DCA70SSIU4F Super-Silent Generator series. As a factory-authorized part, it ensures the diesel exhaust fluid (DEF) dosing system operates within the precise parameters required by the Tier 4 Final emissions system on this machine. Sourced directly from Multiquip, the part is a verified fit for the DCA70SSIU4F, giving you confidence that the part integrates seamlessly with the existing aftertreatment system.

Key Features

• Genuine OEM Emissions Accuracy — Factory-original DEF dosing control calibrated to the exact injection rates required by the Tier 4 Final aftertreatment system on this generator.
• Direct OEM Replacement — Engineered to connect directly to the existing wiring harness and DEF dosing circuit on the DCA70SSIU4F with no adaptation needed.
• Confirmed Fitment — Specifically validated for the DCA70SSIU4F Super-Silent Generator; verify your model before ordering.
• Emissions System Integrity — A correctly functioning dosing control unit keeps DEF injection synchronized with engine load cycles, preventing fault codes, derate conditions, and unplanned shutdowns.
• Regulatory Compliance — Proper DEF dosing is a legal emissions requirement on Tier 4 Final equipment; an OEM control unit maintains the system's certified output levels.

The dosing control unit manages the precise injection of diesel exhaust fluid into the selective catalytic reduction (SCR) system, which converts harmful nitrogen oxide emissions into harmless nitrogen and water vapor. It continuously monitors exhaust conditions and signals the DEF dosing pump to deliver the correct fluid volume in response to engine load and temperature. When this unit fails or drifts out of calibration, the machine may trigger fault codes, enter engine derate mode, or fail emissions compliance checks — all of which can bring generator operation to a halt.

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.