Multiquip RE552182 NOX Sensor

The Multiquip RE552182 NOX Sensor is a genuine OEM component designed for DCA70SSJU4F, DCA150SSJU4F, DCA220SSJU4F, DCA220SSJU4F3, DCA300SSJU4F, and DCA300SSJU4F3 super-silent diesel generator series equipment. This is a direct OEM replacement sourced from Multiquip, ensuring the part matches the exact specification required by your machine. Confirmed fitment covers both standard and 60Hz variants across the DCA super-silent generator lineup. Order with confidence knowing RE552182 is the correct part for your unit.

Key Features

• Emissions-Grade OEM Accuracy — Manufactured to the precise electrochemical sensitivity required for Tier 4 Final diesel emissions compliance on DCA super-silent generators.
• Drop-In Connector Match — Engineered to plug directly into the existing wiring harness on compatible DCA units with no splicing or adapter hardware needed.
• Broad DCA Series Coverage — Fits DCA70SSJU4F, DCA150SSJU4F, DCA220SSJU4F, DCA220SSJU4F3, DCA300SSJU4F, and DCA300SSJU4F3, including 60Hz variants.
• Sustained Aftertreatment Performance — A correctly functioning NOX sensor keeps the SCR aftertreatment system operating within calibrated parameters, preserving fuel efficiency and exhaust output quality.
• Emissions System Compliance — Replacing a faulty NOX sensor with a genuine OEM unit is critical to maintaining Tier 4 Final emissions certification and avoiding engine derate or fault-code shutdowns.

The NOX sensor monitors nitrogen oxide concentration in the exhaust stream of Tier 4 Final diesel engines, feeding real-time data to the engine control module to regulate selective catalytic reduction (SCR) fluid injection. When the sensor reads accurately, the aftertreatment system maintains the correct DEF dosing rate and keeps exhaust emissions within regulated limits. A failed or degraded NOX sensor triggers fault codes, can force the engine into a derate or shutdown mode, and compromises the generator's ability to meet emissions standards — making timely replacement essential for uninterrupted operation.

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.