Multiquip 8121468300 Inlet Air Temp Sensor

The Multiquip 8121468300 Inlet Air Temp Sensor is a genuine OEM component designed for a wide range of Multiquip diesel-powered generators and compressors, including the DCA125SSIU, DCA45SSIU4F, DCA250SSI, DCA70SSIU2, DCA150SSIU, DCA70USI2, DCA36SPXU4F, DCA20SPXU4F, MQP56, DIS185SSI4F, and related variants. As a direct OEM replacement, part 8121468300 is built to the exact specification of the original sensor installed at the factory, ensuring the engine management system receives accurate intake air temperature data. DHS Equipment stocks this part for fast fulfillment, so your generator stays on spec and on schedule.

Key Features

• Genuine OEM Signal Accuracy — Manufactured to the original resistance and output specification so the engine control unit receives precise inlet air temperature readings — not approximations.
• Direct Plug-In Replacement — Matches the original connector and thread pitch for a clean installation without adapters or modifications to existing wiring harnesses.
• Broad Generator Family Coverage — Fits DCA Ultra-Silent, DCA Super-Silent, DCA single-phase, DIS air compressor, and MQP standby series, including DCA125SSIU, DCA45SSIU4F, DCA250SSIU, DCA70USI2, and DCA150SSIU models.
• Protects Engine Fuel Efficiency — A correctly functioning inlet air temp sensor allows the ECU to optimize fuel delivery for ambient conditions; a failed sensor can trigger fault codes, cause rough running, or force the unit into a derate or shutdown mode.
• Emissions and Engine Management Compliance — Critical for Tier 4 Final and ultra-silent generator platforms where accurate air temperature data directly supports emissions control system function.

The inlet air temperature sensor monitors the temperature of air entering the engine's intake system and transmits that data as a voltage or resistance signal to the engine control unit. The ECU uses this reading to adjust fuel injection timing and volume, keeping combustion efficient across varying ambient conditions. When the sensor fails or drifts out of calibration, the ECU loses accurate intake data, which can result in fault codes, increased fuel consumption, reduced power output, or automatic shutdown — particularly critical on generator sets that are expected to run continuously under load.

For questions about fitment or to confirm compatibility with your specific unit, contact the DHS Equipment parts team before ordering.

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.