Multiquip RE560902 DEF Suction Line

The Multiquip RE560902 DEF Suction Line is a genuine OEM component designed for the DCA series ultra-silent diesel generators, including the DCA70SSJU4F, DCA150SSJU4F, DCA220SSJU4F, DCA300SSJU4F, DCA300SSJU4F2, and DCA300SSJU4F3 models. As a direct OEM replacement, RE560902 is manufactured to the exact specifications required by these Tier 4 Final emissions-compliant machines. Sourced directly through authorized Multiquip supply channels, this part ensures your DEF system operates exactly as the machine was engineered to perform. DHS Equipment stocks genuine Multiquip parts to help you get the right component the first time.

Key Features

• Genuine OEM Construction — Manufactured to the exact material and dimensional specifications of the original DEF suction line, ensuring correct fluid compatibility with diesel exhaust fluid.
• Direct-Fit Replacement — Engineered to connect to the existing DEF tank and dosing module fittings on DCA series generators without modification to the line routing or end connections.
• Broad DCA Series Compatibility — Fits DCA70SSJU4F, DCA150SSJU4F, DCA220SSJU4F, DCA300SSJU4F, DCA300SSJU4F2, DCA300SSJU4F3, and DCA300SSJU4F3PD ultra-silent generator models.
• Emissions System Integrity — A correctly functioning DEF suction line delivers consistent fluid flow to the SCR aftertreatment system, keeping Tier 4 Final emissions compliance intact and preventing fault codes that can derate or shut down the generator.
• Fuel System Safety — A cracked, blocked, or deteriorated DEF suction line can trigger SCR system warnings, introduce air into the DEF circuit, or cause improper dosing — replacing it promptly protects both the aftertreatment system and continued operation.

The DEF suction line carries diesel exhaust fluid from the onboard DEF tank to the dosing pump and SCR injection system. In Tier 4 Final generators like the DCA series, the selective catalytic reduction system depends on a steady, uninterrupted supply of DEF to neutralize nitrogen oxide emissions. If the suction line cracks, kinks, or loses a seal at either end, air can enter the DEF circuit or fluid flow can drop off entirely — triggering fault codes, reducing engine output, or causing a full system shutdown until the fault is cleared. Replacing a worn or damaged line with the correct OEM part restores proper DEF delivery and keeps the aftertreatment system functioning as designed.

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.