Multiquip DZ100467 SCR Catalyst

The Multiquip DZ100467 SCR Catalyst is a genuine OEM component designed for the DCA-series Super-Silent diesel generators, including the DCA150SSJU4F, DCA180SSJU4F, DCA220SSJU4F, DCA300SSJU4F, and DCA300SSJU4F3PD models. As a factory-sourced part, the part meets the original emissions and performance specifications required for Tier 4 Final compliant operation on these units. Verify your generator's model code against the fitment list to confirm compatibility before ordering. DHS Equipment supplies this part direct, backed by Multiquip OEM sourcing.

Key Features

• Genuine OEM Emissions Compliance: — Sourced directly from Multiquip to meet the Tier 4 Final exhaust aftertreatment specifications these generators were engineered around.
• Selective Catalytic Reduction Function: — Designed to integrate directly into the exhaust aftertreatment system of the DCA-series super-silent generator, replacing the original catalyst without system modification.
• Broad DCA-Series Fitment: — Compatible across multiple DCA SSJU4F-series configurations, including DCA150SSJU4F, DCA180SSJU4F, DCA220SSJU4F, DCA300SSJU4F2, DCA300SSJU4F3, and DCA300SSJU4F3PD variants in both 50Hz and 60Hz configurations.
• Sustained Emissions Performance: — A correctly functioning SCR catalyst maintains NOx reduction efficiency; a degraded or failed catalyst can cause emissions threshold exceedances and trigger system fault codes that take the generator offline.
• Regulatory and Site Compliance: — Critical for maintaining Tier 4 Final emissions compliance on regulated worksites and avoiding shutdown by environmental enforcement authorities.

The SCR (Selective Catalytic Reduction) catalyst is a core component of the exhaust aftertreatment system on Tier 4 Final diesel generators. It works by converting nitrogen oxide (NOx) emissions into harmless nitrogen and water vapor using a chemical reaction, typically triggered by a diesel exhaust fluid (DEF) injection upstream of the catalyst substrate. When the catalyst degrades, becomes contaminated, or fails, NOx conversion efficiency drops, often triggering fault codes, derate conditions, or full generator shutdown to maintain regulatory compliance. Replacing the catalyst with the correct OEM part ensures the aftertreatment system continues to function as the generator was certified to operate.

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.