FENGCHUNS Carburetor for Arctic Cat 400/500 (2000–2003) — Direct Replacement with Fuel Petcock & 35mm Outlet

FENGCHUNS replacement carburetor designed to directly fit Arctic Cat 400 and 500 ATVs (2000–2003) and restore reliable fuel delivery, starting and idle performance.

If your Arctic Cat 400 or 500 from model years 2000–2003 is showing hard starts, rough idle, stalling or inconsistent throttle response, this FENGCHUNS carburetor is a direct-replacement assembly for OEM part numbers 0470-449, 0470-390 and 0470-433. Manufactured to the original dimensions with a built-in fuel petcock (valve) and integrated air filter area, the unit installs without modification and helps return the engine to steady operation after old, worn or clogged carburetors are removed.

How will this carburetor improve starting and idle?

This carburetor is machined and assembled to match original inlet and outlet diameters so the air-fuel mixture remains consistent. A correct mixture helps the engine start easier and maintain smooth idling by preventing lean or rich conditions commonly caused by worn components.

• Exact OEM-style ports: 35mm outlet, 55mm outer inlet, 52mm inner inlet, 42mm flange.
• Restores steady fuel flow for reliable choke and cold starts.
• Improves idle stability and reduces stalling at low RPM.

Will it fit my Arctic Cat model without modification?

Yes—the FENGCHUNS carburetor is a direct fit for Arctic Cat 400 (2002–2003) and Arctic Cat 500 (2000–2003) in both 2x4 and 4x4 configurations, including TBX and automatic variants. It replaces the listed OEM numbers and uses original mounting dimensions, so no cutting, sanding or adapters are required for standard installations.

• Direct replacement for OEM 0470-449, 0470-390, 0470-433.
• Fits 2000–2003 Arctic Cat 500 and 2002–2003 Arctic Cat 400 models.
• Compatible with 2x4, 4x4, TBX and automatic transmissions.

What materials and quality checks ensure durability?

The body is cast from a high-grade aluminum alloy that resists corrosion and wear in off-road environments. Before shipping each carburetor goes through multiple quality inspections and sealing checks to reduce leaks, clogging and premature failure under harsh riding conditions.

• Premium aluminum alloy construction for corrosion resistance.
• Anti-clogging features and tight sealing to protect the engine.
• Quality inspections performed prior to shipment.

How does this part affect fuel efficiency and performance?

By restoring correct air-fuel metering, the carburetor helps the engine run more efficiently—reducing wasted fuel from overly rich mixtures and improving throttle response. While exact mileage gains vary by vehicle condition and riding style, users typically notice smoother acceleration and fewer fuel-related drivability issues.

• Stabilizes air-fuel ratio for smoother throttle transitions.
• Reduces symptoms like rough acceleration or power drop-off.
• May lower fuel consumption caused by a degraded carburetor.

Who is this for: Riders and mechanics who own Arctic Cat 400 or 500 ATVs from 2000–2003 and need a reliable, OEM-dimension replacement carburetor with an integrated fuel valve and air filter area. It’s suited for owners restoring older machines, replacing a damaged or clogged carburetor, or anyone seeking a cost-effective upgrade built to withstand off-road use.