The Multiquip 8983064630 is a genuine OEM Catalyst Assembly DEF DCA70SSIU4F designed for the DCA70SSIU4F ultra-silent diesel generator. As a direct OEM part, it is manufactured to the exact specifications required by the emissions and exhaust aftertreatment system on this machine. This assembly is the correct replacement for the DCA70SSIU4F and ensures the DEF dosing and catalytic reduction system continues to operate as intended. Sourced directly from Multiquip, 8983064630 gives you confidence that you are installing an exact-match component with no guesswork on compatibility.
Key Features
- Genuine OEM Catalytic Integrity — Manufactured to the precise substrate composition and coating specifications required for proper selective catalytic reduction (SCR) performance on this generator platform.
- Direct-Fit Assembly — Built to match the exact mounting configuration and DEF injection interface of the DCA70SSIU4F exhaust aftertreatment system, allowing straightforward installation.
- Confirmed Fitment — Verified OEM replacement for the DCA70SSIU4F ultra-silent diesel generator series.
- Emissions System Compliance — A correctly functioning catalyst assembly maintains proper NOx conversion within the SCR system, keeping the generator operating within its designed Tier 4 Final emissions parameters.
- Exhaust Aftertreatment Protection — Replacing a degraded or failed catalyst assembly prevents downstream damage to the DEF system, avoids fault codes, and keeps the generator running without derate or shutdown conditions.
The catalyst assembly in a DEF-equipped diesel generator is the core component of the selective catalytic reduction (SCR) exhaust aftertreatment system. It works in combination with diesel exhaust fluid to chemically convert harmful nitrogen oxides (NOx) in the exhaust stream into harmless nitrogen and water vapor. When the catalyst degrades or becomes contaminated, the SCR system loses conversion efficiency, which can trigger fault codes, cause engine derating, or result in a forced shutdown — taking the generator offline when it is needed most. Replacing it with the correct OEM assembly restores full emissions control function and protects the rest of the aftertreatment system from unnecessary wear.
Part Details
| Part Number | 8983064630 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Catalyst Assembly DEF DCA70SSIU4F |
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.
