Multiquip RE555351 DEF Supply Module Cover Kit

The Multiquip RE555351 is a genuine OEM DEF Supply Module Cover Kit designed for the DCA Super-Silent generator series, including DCA150SSJU4F, DCA180SSJU4F3, DCA220SSJU4F, DCA300SSJU4F, DCA300SSJU4F2, and DCA300SSJU4F3 models. As a direct OEM replacement, RE555351 is sourced from the original manufacturer to ensure correct fit and proper protection of the DEF supply module assembly. This kit is compatible with both 60Hz configurations and standard variants across the DCA Tier 4 Super-Silent generator lineup. When you need to restore the DEF system enclosure to proper working condition, this is the part specified for the job.

Key Features

• Genuine OEM Enclosure Protection: — Manufactured to original specification, ensuring the cover seats flush and provides full protection against contamination of the DEF supply module components.
• Direct-Fit Replacement: — Designed to install in the same position and mounting points as the original cover assembly, requiring no rework or modification to the housing.
• Broad DCA Series Compatibility: — Fits DCA150SSJU4F, DCA180SSJU4F3, DCA220SSJU4F, DCA300SSJU4F, DCA300SSJU4F2, DCA300SSJU4F3, and DCA300SSJU4F3PD Super-Silent generators, including 60Hz variants.
• Emissions System Integrity: — A properly fitted cover keeps the DEF supply module shielded from debris and moisture, which is critical for maintaining accurate DEF dosing and Tier 4 emissions compliance.
• DEF System Safety: — Protects sensitive DEF pump, sensor, and fluid line connections within the module housing from physical damage and environmental exposure that could trigger fault codes or system shutdowns.

The DEF (Diesel Exhaust Fluid) supply module manages the delivery of DEF fluid into the exhaust aftertreatment system, where it reacts with exhaust gases to reduce harmful nitrogen oxide emissions in compliance with Tier 4 Final regulations. The cover kit shields the module's internal components — including the pump, heater, and sensors — from dirt, moisture, and mechanical damage during operation. A missing or damaged cover can expose these components to conditions that cause DEF system faults, force generator shutdowns, or result in failed emissions compliance during regulated use.

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.

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