OLIFANT PD24J 24mm GY6 Carburetor for 125cc–150cc 152QMI/157QMJ Scooters — Direct-Fit, Restore Throttle Response

OLIFANT PD24J carburetor is a direct-fit 24mm replacement designed for GY6-style 125cc and 150cc 4-stroke scooters using the 152QMI/157QMJ platform.

This precision-molded carburetor restores fuel delivery and throttle response on many popular scooter and moped models. It replaces worn or clogged OEM carburetors and is compatible with a wide range of brands listed for GY6 125–150cc engines. Built with standard intake and airbox flange dimensions, the PD24J streamlines installation and settings when paired with box-style air filters and stock intake boots.

Which scooters and engines will this PD24J carburetor fit?

The PD24J is engineered for GY6-style 152QMI and 157QMJ engines and fits many common 125cc and 150cc scooters. It is compatible with numerous makes and models from aftermarket and OEM manufacturers that use the same intake flange geometry.

• Fits GY6 150cc and 125cc 4-stroke engines (152QMI / 157QMJ).
• Works with brands like Sunl, Taotao, Roketa, Jonway, Znen, Lance, and many more.
• Suitable for models listed in product features and comparable GY6 mounts.

How do the dimensions and ports affect installation?

This carburetor provides standard diameters to match most intake boots and air filters on GY6 scooters, reducing the need for adapters. Knowing the intake and airbox measurements helps verify a straight swap and prevents vacuum leaks or misalignment.

• Intake side inner diameter: 24mm (0.94 in) for the throttle bore.
• Intake side outer diameter: 32mm (1.26 in) to match boot fitments.
• Air filter side inner diameter: 38mm (1.5 in) and outer 42mm (1.65 in) for standard airbox adapters.

What performance and reliability benefits can I expect?

Replacing a worn carburetor with the PD24J restores consistent fuel metering and smoother throttle transitions. While not a performance tuner part, a properly jetted, leak-free carburetor improves starting, idle stability, and midrange throttle response on stock engines.

• Restores dependable idle and better throttle response compared to clogged OEM units.
• Clean jetting and intact seals reduce hesitation and backfiring.
• Durable construction resists common wear points found in older carbs.

What should I check before buying to ensure compatibility?

Measure the boot and airbox openings on your scooter and compare them to the PD24J dimensions. Confirm your engine type (152QMI or 157QMJ) and verify that your intake flange layout matches a standard GY6 carburetor attachment.

• Verify engine designation: 152QMI or 157QMJ GY6-style engines.
• Measure intake and airbox diameters against the listed sizes.
• Confirm throttle and fuel line connections align with your scooter’s hoses.

Who this is for: The OLIFANT PD24J 24mm carburetor is intended for owners, mechanics, and hobbyists working on GY6-based 125–150cc scooters that need a reliable replacement carburetor. It suits riders restoring older scooters, replacing clogged or leaking stock carbs, or keeping a common-fit spare on hand. If you have a GY6 152QMI/157QMJ engine and your intake and airbox measurements match, this unit provides a practical, OEM-style replacement without major modification. For customized performance builds, consider professional jetting and tuning after installation to match your specific exhaust and intake setup.