Throttle Body Assembly for Polaris Sportsman 570 2014-2025 Sportsman 450 HO 2017-2025 Replaces 2203924 1202836 1253492 7081193

Brand Name: M MATI

Origin: Mainland China

For ATV Brand/Model: Polaris

Special Features:  Throttle Body 

MPN : 2203924 1202836 1253492 7081193 7081623 7080681

Package :  Throttle Body x1 Hose Clamp x1

Placement on Vehicle :    Throttle Body

Warranty : 1 year

Condition :  NEW

Fit for following Polaris ATV/UTV 

Sportsman 700 EFI 2004-2007
Sportsman 700 EFI X2 2008
Sportsman 800 6x6 Big Boss 2009-2014
Sportsman 800 6x6 Forest 2012
Sportsman 800 EFI 2005-2014
Sportsman 800 EFI Touring 2008-2009（Built 1/05/09 and Before）
Sportsman 800 EFI X2 2007-2009
Sportsman Forest 800 2012

Ranger 700 XP 2005
RZR 800 2008-2009
RZR 800 S 2009
RZR 800 EPS 2009

🛠️ Installation Tips

• The "Clean Intake" Rule: Before installing the new throttle body, thoroughly clean the rubber intake boot and airbox. If dirt caused your old unit to fail, it will ruin the sensors on the new one instantly. Inspect the boot for tiny cracks that cause vacuum leaks.

• ECU Relearn Procedure: After installation, disconnect the battery for 15 minutes. Once reconnected, turn the key to "ON" (do not start) for 60 seconds to allow the ECU to calibrate the new TPS and IAC positions.

• Cable Tension: Ensure the throttle cable has a tiny bit of slack ($2\text{--}3 \text{ mm}$) at the thumb lever. If the cable is too tight, the IAC will not be able to control the idle correctly, leading to stalling or high-revving at stops.

• Dielectric Grease: Apply a small amount of dielectric grease to the multi-pin electrical connector. On ATVs, these plugs are prone to water ingress, which causes the "ghost" EFI codes that frustrate many owners.

• Boot Clamp Torque: Tighten the intake clamps firmly but do not "crush" the rubber. An over-tightened clamp can actually cause the rubber boot to slip off under engine vibration.

🔍 Troubleshooting Guide

Issue	Possible Cause	Solution
Erratic or High Idle	IAC valve malfunction or vacuum leak.	Ensure the mounting boots are airtight. If the idle stays high, perform the "ECU Relearn" mentioned above.
Bogs/Stumbles on Gas	Faulty TPS (Throttle Position Sensor).	If the engine stutters at a specific thumb position, the TPS has a "dead spot." This new assembly includes a pre-calibrated TPS.
"Check Engine" Light	Loose connector or sensor fault.	Verify the 6-pin (or equivalent) plug is fully seated. Most codes on the 570/450 relate to the TPS voltage being out of range.
Stalling at Stop Signs	Dirty butterfly valve or IAC failure.	If the bike dies every time you let off the gas, the Idle Air Control is not bypassing enough air. Replacing the unit fixes this.
Hard Cold Starts	Improper air-fuel mixture at idle.	Ensure your air filter is clean. If the engine cranks but won't fire without "giving it gas," the throttle body is likely the culprit.