150cc 4-Stroke Long-Case GY6 Gas Engine with automatic CVT transmission is the top of the line aftermarket replacement engine available in the marketplace. This is the only engine that has earned the Universal Parts stamp for our stringent quality and performance standards.

This scooter engine is used in a wide variety of applications, including full-size street legal scooters, all terrain vehicles (ATVs), dirt bikes, and go karts. Compatible with both 125cc and 150cc engine size scooters and vehicles.

This complete engine includes electric starter, kick start, and CVT.
Engine is set up for PAIR Emissions System. PAIR is an acronym for Pulsed Secondary Air Injection System. It is an emissions control system used to lower HC and CO emissions. It works by allowing air into the exhaust flow.

Premium Quality, Hand Inspected, QC Verified
Style: Long case (11" from rear of case to drive shaft)
Engine Type: GY6 Single Cylinder 4-Stroke
Cooling: Air Cooled
Displacement: 149.6cc
Cylinder/Piston: 57mm
Starting: Electric/kick
8 Coil A/C Stator
Output Shaft Length: 121mm
Distance Between Mounting Points: 5 Inches
Set Up For Rear Drum Brake: 125mm
Set Up for PAIR Emissions System
Includes Premium Bando Drive Belt in 835-20-30 & NGK Spark Plug
Engine Oil: 0.75 Liters
Gear Oil: 0.17 Liters (6 fl. oz.)
Shipped Dry, Included Oil Not Installed - Do NOT Run Engine Without Adding Specified Amounts of Oil (Bel-Ray Oil Included)
This Engine Only Ships to the Continental U.S.

Please Read The Following Important Notices:

This engine is shipped dry, included oil not installed. Includes 1 Liter of Bel-Ray Gear Saver Hypoid Oil and 1 Liter of Bel-Ray Engine Oil. DO NOT RUN ENGINE WITHOUT ADDING SPECIFIED AMOUNTS OF OIL.
Check oil level after letting the engine idle for a few minutes, add additional oil if needed.
GY6 125cc and 150cc engines come in different sizes. Please measure the physical size of your engine and compare to our specifications before ordering. The difference is in the length of the rear swing arm. Different lengths have been made to accommodate different wheel sizes.
Set Up For Drum Brakes.
This Engine Only Ships to the Continental U.S.

Engines Complete

150cc 4-stroke GY6 Short-Case Engine

150cc GY6 4-stroke Long-Case Engine

150cc GY6 Long-Case Engine - Short Block

50cc 2-stroke Long Case Engine - Short Block

QMB139 50cc Shortcase Engine

QMB139 50cc Longcase Engine