The Multiquip 8982318983 Dosing Module is a genuine OEM component designed for DCA400SSI4F3B and DCA400SSI4F3PD series ultra-silent diesel generators, including Sunbelt-configured units. As a direct OEM replacement, it meets the exact design and output specifications Multiquip requires for proper DEF (Diesel Exhaust Fluid) injection in Tier 4 Final emissions systems. Sourced directly through authorized channels, this part carries the quality assurance that keeps your generator operating within compliance and performing at its rated output.
Key Features
- Tier 4 Final DEF Metering Precision — Engineered to deliver accurate dosing volumes that keep exhaust aftertreatment chemistry within specification, preventing fault codes and DEF system shutdowns.
- Direct OEM Replacement — Installs into the existing DEF dosing circuit without adaptation, using the original connector and mounting configuration for a straightforward swap.
- Confirmed Fitment for DCA400SSI4F3 Variants — Verified for DCA400SSI4F3B and DCA400SSI4F3PD units, including Sunbelt-spec machines.
- Protects SCR System Integrity — A correctly functioning dosing module safeguards the selective catalytic reduction (SCR) catalyst from over- or under-dosing, which can cause costly catalyst damage or regeneration failures.
- Emissions Compliance Support — Maintains the generator's Tier 4 Final emissions certification; a failed or incorrect dosing module can trigger derate conditions that reduce generator output or force a full shutdown.
The dosing module is the component responsible for injecting a precisely metered quantity of DEF fluid into the exhaust stream upstream of the SCR catalyst. By controlling the exact volume and timing of DEF injection, the module enables the SCR system to convert harmful nitrogen oxides (NOx) into nitrogen and water vapor, keeping the generator compliant with EPA Tier 4 Final emissions standards. When the dosing module fails or delivers inaccurate flow, the aftertreatment system cannot maintain the correct chemical reaction, which typically results in fault codes, engine derate, or a full generator shutdown until the fault is resolved.
For questions about fitment or to confirm this is the correct part for your specific unit, contact the DHS Equipment parts team before ordering.
Part Details
| Part Number | 8982318983 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Dosing Module |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diesel Powered Generators | DCA400SSI4F3B |
| Diesel Powered Generators | DCA400SSI4F3PD |
| Diesel Powered Generators | DCA400SSI4F3PD (SUNBELT) |
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.
