YOXUFA PZ19 19mm Carburetor Kit for 50–125cc ATVs & Pit Bikes — Hand Choke, Tunable Jets

YOXUFA PZ19 is a 19mm replacement carburetor kit engineered for 50–125cc Chinese-made ATVs, pit bikes and quads to deliver easier tuning and better fuel economy than larger PZ22-style carbs.

Swapping a worn or incorrect carburetor can restore throttle response and reduce fuel use on small-displacement off-road machines. The YOXUFA PZ19 package includes the main carburetor and a selection of installation parts so you can fit it to many TaoTao, Coolster, Apollo, SSR, Baja and similar models without hunting for additional components. It’s a hand-choke design with external adjustable jets for air-fuel tuning and idle control.

What makes the PZ19 suited to 110–125cc and smaller engines?

The 19mm throat size balances airflow and fuel atomization for engines from about 50cc up to 125cc, giving smoother part-throttle performance and improved economy versus larger 22mm carbs. Its compact profile also fits the limited engine bay space on many Chinese quads and dirt bikes.

• 19mm bore optimized for 50–125cc displacement ranges
• Better fuel metering at cruising speeds than PZ22 counterparts
• Compact casting to ease installation in tight frames
• External idle and air-mixture adjustments for tuning

How do I install and tune this carburetor on my ATV or pit bike?

The kit arrives with a 35mm air filter, fuel line, clamps, extra fuel filters, gasket set, spark plug, oil switch and a small wrench so you can complete a direct swap on many popular models. Initial tuning requires setting the idle screw, then adjusting the air-fuel mix screw for a steady, responsive rev between idle and throttle.

• Use included gaskets and clamps for a sealed fit
• Set idle screw to a stable low-RPM idle before mix adjustments
• Turn air-fuel screw in small increments while testing throttle
• Confirm choke operation and recheck for fuel leaks after ride

Which machines is this carburetor compatible with?

This YOXUFA PZ19 was designed for a wide range of small four-stroke Chinese-built ATVs, dirt bikes and pit bikes. It’s commonly used as a replacement on TaoTao, Coolster, Apollo and SSR models as well as many rebadged quads and minibikes, but it is not for GY6 engines.

• Fits many 50cc, 70cc, 110cc and 125cc Chinese quads and pit bikes
• Compatible with TaoTao, Coolster, Apollo, SSR, Baja, X-Pro and similar
• Not compatible with GY6-style engines
• Hand-choke style—verify choke linkage fits your frame

What is included in the full replacement kit and why it helps?

YOXUFA supplies both the carburetor and the common consumables you’ll need to complete the swap, so you won’t have to source small parts separately. Extra fuel filters and clamps cut downtime, while the included air filter and spark plug help you leave the workshop ready to ride.

• 1 x PZ19 carburetor body for direct replacement
• 1 x 35mm air filter, fuel line, 2 fuel filters and 4 clamps
• Gasket set, spark plug, oil switch and a mounting wrench
• Everything supplied to reduce installation delays and leaks

Who is this for? The YOXUFA PZ19 kit is aimed at owners and mechanics of small-displacement off-road machines who need a reliable, tuneable replacement carb that improves everyday fuel use and responsiveness. It’s a good fit for DIY riders who want a complete parts bundle for a one-stop swap on common Chinese 50–125cc ATVs, pit bikes and quads, provided the engine is not a GY6 variant.