CALU LUKY Carburetor for Yamaha YFM350/YFM400 ATVs - Direct-Fit Replacement with Intake Manifold & Screw Kit, 36/46 mm

CALU LUKY YFM350 carburetor is a direct-fit replacement assembled to restore reliable fuel-air metering for Yamaha 350/400 ATVs listed in the compatibility range.

This aftermarket carburetor is engineered to match the original feed and throttle dimensions for many Yamaha models, including the Warrior 350, Big Bear 350, Moto-4 350, Kodiak 400 (selected years), and Wolverine 350. It ships with an intake manifold and a screw pack so you have the primary parts needed for installation. Built to reproduce the correct air–fuel proportions, the unit aims to bring steadier idling, smoother throttle response, and cleaner starting compared with a worn carburetor.

Which Yamaha machines will this CALU LUKY carburetor fit?

This carburetor is compatible with a broad set of Yamaha ATVs across multiple model years. Confirm fitment by comparing your current carb’s mounting and bore dimensions with those below before purchasing.

• YFM350 Warrior: 1987–2004
• Moto-4 350: 1992–1995
• Big Bear 350: 1987–1998 (2WD/4WD variations covered in listed years)
• Kodiak 400 & Wolverine 350: select years in the mid‑1990s

What are the key measurements and contents included?

The carburetor’s intake and filter-side diameters are specified so you can verify compatibility with your airbox and manifold. The package includes the main carburetor plus the intake manifold and a screw kit, providing the essentials for a straightforward swap.

• Intake-side inner diameter: 36 mm
• Air-filter-side inner diameter: 46 mm; outer diameter: 50 mm
• Package contents: 1x carburetor, 1x intake manifold, 1x screw package

How will replacing the carburetor affect engine behavior?

Refreshing a worn carburetor helps the engine receive a more consistent fuel-to-air mixture under varying loads and throttle positions. Expect improved cold starts, fewer stumbles during acceleration, and a more predictable idle once the unit is tuned to your machine.

• Smoother throttle transitions and reduced hesitation
• More stable idle with fewer rev fluctuations
• Easier starting and more consistent running after installation

What should I check before installing this replacement?

Verify that the mounting pattern, throttle linkage, and hose connections on your ATV match this carburetor’s dimensions. Also inspect the airbox, intake boots, and fuel lines for wear; replacing old rubber parts at the same time prevents leaks and alignment problems.

• Compare bore sizes and flange spacing to your old carb
• Ensure throttle and choke linkages align with your controls
• Replace cracked boots, brittle hoses, or worn clamps during install

Who this is for: Riders and mechanics who own compatible Yamaha ATVs and need a budget‑friendly replacement carburetor to restore reliable performance. It’s aimed at owners comfortable with basic mechanical work or shops that perform carb swaps; if you’re unsure about fitment, compare measurements or consult a technician before ordering. For post‑purchase questions, contact the seller for help with fitment or installation guidance.