Complete EFI Throttle Body Assembly for Polaris Sportsman ETX 325 Hawkeye 325 2x4 2015 Replaces 1204986

Brand Name: M MATI

Origin: Mainland China

For ATV Brand/Model: Polaris

Placement on Vehicle：Throttle Body

Manufacturer Part Number： 1204986

Package ：   Throttle Body Assembly x1   Clean Brushes x1

Warranty：   1 Year

Condition：   New

Fit for following Polairs ATV:    

Sportsman ETX 325 2015
Hawkeye 325 2x4 2015

🛠️ Installation Tips

• Clean the Intake Boot: Before installing the new unit, inspect the rubber intake boot for cracks or dry rot. A tiny "vacuum leak" behind the throttle body will cause the engine to run lean and pop, regardless of how new the throttle body is.

• TPS Calibration: While this unit is pre-set, the Polaris ECU may need a "Reset" to recognize the new idle parameters. Disconnect the battery for 15 minutes after installation to clear the "Long Term Fuel Trim" memory.

• Avoid "Finger-Poking": Do not manually force the butterfly valve open with your fingers while the unit is unplugged. Electronic throttle bodies use sensitive gears; forcing them can damage the internal clockspring or gear teeth.

• Check the Airbox: If your old throttle body was covered in dirt, your air filter or airbox seal has failed. Always install a new air filter with a new throttle body to prevent the new sensors from being contaminated immediately.

• Connector Security: Ensure the multi-pin electrical connector "clicks" into place. Vibrations on a 325cc single-cylinder are high; a loose connector will trigger intermittent EFI fault codes and stalling.

🔍 Troubleshooting Guide

Issue	Possible Cause	Solution
Erratic/High Idle	Faulty IAC valve or vacuum leak.	Ensure the mounting clamps are tight. If the idle stays high after the engine is warm, the ECU may need an "Idle Relearn" procedure.
Bogs Under Load	Failing TPS (Throttle Position Sensor).	If the engine "stumbles" exactly at a certain thumb-throttle position, the TPS sensor has a dead spot. Replacing the assembly fixes this.
Hard Cold Starts	Dirty or faulty injector/throttle plate.	Ensure the internal plate isn't gummed up with old fuel. Since this is a new unit, verify your fuel pump pressure is at the required $45\text{--}50\text{ PSI}$.
Check Engine Light (EFI)	Electrical connector pin corrosion.	Inspect the harness side for green corrosion. Clean the pins with contact cleaner before plugging into the new assembly.
Stalling at Stops	Carbon buildup or IAC failure.	If the bike dies every time you let off the gas, the Idle Air Control is failing to bypass air. This new assembly includes a fresh, calibrated IAC.