The Multiquip DZ118548 DEF In-Line Filter is a genuine OEM component designed for the DCA300SSJU4F3, DCA70SSJU4F, and DCA300SSJU4F3PD Super-Silent generator series. As a direct OEM replacement, this filter ensures your DEF (Diesel Exhaust Fluid) system stays clean and free of contaminants that can disrupt SCR (Selective Catalytic Reduction) emissions control operation. Verified fitment covers both 50Hz and 60Hz configurations in the DCA Super-Silent lineup. Keep this service part on hand to maintain uninterrupted generator operation on critical jobsites.
Key Features
- Genuine OEM Filtration Media — Built to the same contamination-capture specification as the original, protecting DEF injectors and SCR system components from particulate damage.
- Drop-In Inline Replacement — Matches the original inline fitting configuration for a straightforward swap within the DEF supply line — no line modifications needed.
- Broad Super-Silent Series Coverage — Confirmed fitment for DCA300SSJU4F3, DCA300SSJU4F3PD, and DCA70SSJU4F generators across both 50Hz and 60Hz variants.
- Emissions System Protection — A clogged or failed DEF filter restricts fluid flow to the SCR system, triggering fault codes and potential power derate — timely replacement keeps the generator running at full rated output.
- Regulatory Compliance Assurance — The DEF filtration system is a critical element of Tier 4 Final emissions compliance; using the correct OEM filter supports continued adherence to EPA emissions standards.
The DEF In-Line Filter sits within the Diesel Exhaust Fluid supply line between the DEF tank and the dosing injector. Its job is to capture particulates and debris before they reach the injector and SCR catalyst, both of which are sensitive to contamination. When the filter becomes blocked or degraded, DEF flow is reduced or interrupted, which can cause the SCR system to trigger fault codes, initiate engine power derate, or flag emissions non-compliance — making routine filter inspection and replacement an essential part of generator maintenance on Tier 4 Final machines.
For fitment questions or help confirming compatibility with your specific generator serial range, contact the DHS Equipment parts team.
Part Details
| Part Number | DZ118548 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | DEF In-Line Filter |
Compatibility & Fitment
| Name | Model |
|---|---|
| Super-Silent Generators | DCA300SSJU4F3 |
| Super-Silent Generators | DCA70SSJU4F |
| Super-Silent Generators | DCA300SSJU4F3PD |
| Super-Silent Generators | DCA300SSJU4F3PD 60Hz |
| Super-Silent Generators | DCA300SSJU4F3 60Hz |
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.
