The Multiquip 8975055580 Control Unit DEF DCM DCU is a genuine OEM component designed for the DCA70SSIU4F ultra-silent diesel generator. As a direct OEM replacement sourced through authorized channels, this control unit delivers the exact electronic specifications required by the DEF (Diesel Exhaust Fluid) dosing control module on Tier 4 Final compliant equipment. Verified fitment for the DCA70SSIU4F ensures this unit integrates correctly with the existing emissions control architecture without adaptation. DHS Equipment stocks this part to keep your Multiquip generator running in full regulatory compliance.
Key Features
- Emissions System Precision — Engineered to the exact signal output and communication protocols required by the DEF dosing system on Tier 4 Final generators, ensuring accurate fluid metering and emissions compliance.
- Genuine OEM Component — Sourced directly from Multiquip, this control unit matches the original DCM/DCU specification installed at the factory, eliminating compatibility guesswork on a safety-critical emissions control system.
- Direct Replacement for DCA70SSIU4F — Confirmed fitment for the DCA70SSIU4F ultra-silent Isuzu-powered generator; connects to existing wiring harness and mounting points without alteration.
- Protects Against DEF System Faults — A failed or out-of-spec control unit can trigger fault codes, derate engine power, or cause a complete shutdown; replacing with this part restores normal DEF system operation and prevents costly downtime caused by emissions lockout.
- Regulatory Compliance Support — Tier 4 Final generators are subject to EPA emissions standards; using the correct OEM control unit maintains the machine's certified emissions profile and supports compliance on regulated worksites.
The DEF Control Unit (DCM/DCU) manages the Diesel Exhaust Fluid dosing process within the Selective Catalytic Reduction (SCR) emissions system on Tier 4 Final diesel equipment. It receives data from sensors throughout the exhaust aftertreatment system and precisely regulates how much DEF is injected into the exhaust stream to reduce nitrogen oxide emissions to legal limits. When this control unit fails or develops a fault, the generator's engine management system will typically derate power output or initiate a shutdown sequence to prevent emissions violations — making prompt replacement with the correct OEM unit critical to keeping the machine operational and compliant.
For questions about part 8975055580 or fitment on your DCA70SSIU4F generator, contact the DHS Equipment team for expert support.
Part Details
| Part Number | 8975055580 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Control Unit DEF DCM DCU |
Compatibility & Fitment
| Name | Model |
|---|---|
| DCA70SSIU4F | DCA70SSIU4F |
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.
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