ATRACYPART YFM660 Carburetor Replacement for Yamaha Grizzly 660 (2002–2008) — Direct‑Fit, Restores Throttle Response

High-quality ATRACYPART replacement carburetor engineered to restore reliable fuel-air mixing and revive performance on 2002–2008 Yamaha Grizzly 660 ATVs.

If your Grizzly 660 is running rough, hesitating, or using more fuel than it should, a worn or damaged carburetor is often the cause. This ATRACYPART YFM660 carburetor is designed as a direct-fit replacement for Yamaha part numbers 5KM-14901-00-00 and 5KM-14901-10-00, restoring proper fuel delivery and throttle response. Built to match the original mounting and port dimensions, the unit offers a practical repair option without replacing other engine systems.

Will this carburetor physically fit my Yamaha Grizzly 660?

Yes — it's made to match the factory dimensions for 2002–2008 Grizzly 660 models and the common Yamaha part numbers listed. The intake and air-filter-side diameters correspond with OEM connections to help ensure a secure seal and correct airflow path.

• Fits model years: 2002–2008 Yamaha Grizzly 660 (YFM660).
• Replaces: 5KM-14901-00-00, 5KM-14901-10-00-00, 2C6-14901-00-00, 5KM-13596-00-00.
• Intake side inner/outer: 42mm / 48mm for correct manifold mating.
• Air-filter side inner/outer: 59mm / 62mm for standard filter boots.

How does this replacement affect engine performance?

Restoring a properly functioning carburetor helps the engine receive the correct air-fuel ratio across throttle positions, which improves throttle response, steadies idle, and can reduce inconsistent fueling. While it won’t change internal engine specs, a good carb helps the motor operate closer to its intended performance envelope.

• Improves throttle response and smoother acceleration.
• Helps stabilize idle and reduces surging or stalling.
• Reduces fuel-wetting and uneven running caused by leaks or blockages.

What are the key measurements and why they matter?

Correct diameters on both the intake and air-filter sides are critical for sealing and airflow. Mismatched sizes can cause leaks, vacuum loss, or poor air metering, so this replacement lists exact inner and outer diameters to match stock boots and manifolds.

• Intake inner diameter: 42mm (1.65") for manifold connection integrity.
• Intake outer diameter: 48mm (1.89") matching clamp fitment.
• Air-filter inner diameter: 59mm (2.32") for filter boot compatibility.
• Air-filter outer diameter: 62mm (2.44") for secure clamping and sealing.

What warranty and support come with the carburetor?

ATRACYPART includes a 12-month warranty that covers defects and production faults, with customer support available if you encounter fitment or functional issues. The warranty supports replacement or refund options subject to the seller’s terms and verification of the problem.

• 12-month limited warranty for defects and manufacturing issues.
• Customer service channel available for fitment or function concerns.
• Instructions: keep purchase details and communicate issues promptly.

Who is this for: This ATRACYPART carburetor is aimed at owners and mechanics of 2002–2008 Yamaha Grizzly 660 ATVs who need a cost-effective, direct-replacement carb to fix fueling problems without modifying the engine. It’s suitable for DIY riders comfortable with basic carb removal and installation, as well as professional shops looking for an affordable OEM-compatible unit to restore throttle response and idle quality.