Multiquip 8982688110 DEF Supply Module

The Multiquip 8982688110 DEF Supply Module is a genuine OEM component designed for DCA125SSIU4F and DCA70SSIU4F super-silent diesel generator models. As a direct OEM replacement, it meets the original engineering specifications for the DEF (Diesel Exhaust Fluid) dosing system installed on these Tier 4 diesel-powered units. Verified fitment covers both the DCA125SSIU4F and DCA70SSIU4F platforms, including 60Hz configurations, so you can order with confidence that this module will integrate correctly with your machine's aftertreatment system.

Key Features

• Genuine OEM DEF System Integrity — Sourced directly from Multiquip, this module is manufactured to the exact dosing and fluid-handling tolerances required by the Tier 4 aftertreatment system — not a generic approximation.
• Drop-In Compatibility — Engineered to connect directly to the existing DEF system plumbing and wiring harness on DCA125SSIU4F and DCA70SSIU4F generators, with no adapter fittings or harness modifications needed.
• Confirmed Fitment — Verified for DCA125SSIU4F and DCA70SSIU4F super-silent generator models, including 60Hz variants, covering both platforms in Multiquip's Tier 4 super-silent diesel lineup.
• Emissions System Performance — A properly functioning DEF supply module ensures accurate fluid delivery to the SCR catalyst, maintaining NOx reduction efficiency and keeping the generator operating within Tier 4 Final emissions compliance.
• Prevents DEF System Fault Codes — A failed or degraded supply module commonly triggers aftertreatment fault codes that can derate or shut down the generator; replacing it with a genuine OEM part restores correct system behavior and avoids nuisance shutdowns on the job.

The DEF Supply Module is a core component of the Selective Catalytic Reduction (SCR) aftertreatment system used in Tier 4 Final diesel engines. Its job is to pump and meter Diesel Exhaust Fluid from the tank into the exhaust stream, where it reacts with exhaust gases to reduce harmful NOx emissions. When this module fails — through pump wear, heating element failure, or internal blockage — the generator's engine control system detects the fault and will typically derate power output or trigger an automatic shutdown to maintain emissions compliance. Replacing a worn or failed module with a genuine Multiquip 8982688110 restores correct DEF dosing and keeps the generator running at full rated output without emissions-related interruptions.

For fitment questions or to confirm compatibility with your specific serial number range, contact the DHS Equipment parts team directly.

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.