G- Engine 50mm 49cc 4-Stroke (139QMB longcase)
Description: 139QMB 50mm Stud Spacing 49cc 4-Stroke longcase Engine. Complete engine assembly, long crankcase version 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. The engine is set up for the 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
NOTE: This engine is shipped dry, however does include oil separately but not installed. 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. 139QMB and 1P39QMB engines come in different sizes. Please measure the physical size of your engine and compare it to our specifications before ordering. The difference is in the length of the rear swingarm. Different lengths have been made to accommodate different wheel sizes. This 139QMB Engine 50mm 49.6cc 4-Stroke longcase is set up for drum brakes and accommodates 12"-13" wheel sizes.
Includes the following Engine oil, Gear oil, CVT belt, Spark plug, and Engine.
• 1x Air-Cooled 50mm Stud Spacing 4-Stroke Engine (longcase)
• 1x Crankshaft L: 41.5mm
• 1x Cylinder/Piston: 39mm
• 1x Cylinder Head/Valves L: 69mm
• Engine Displacement: 49.6cc
• 1x Bando CVT Belt: 729-18-30mm
• 1x CVT Cover longcase: 17"
• 1x Final Drive Shaft L: 122mm
• Distance Between Mounting Points: 5"
• 2x Brake Shoes: 52.82x25.16mm
• 2x Clutch Springs: mm
• 1x PAIR Emissions System
• 1x NGK Spark Plug
• 1x Starter: Electric/Kick-start
• 1x Stator: 8 Coil AC
• 1x Stator Fan/Shroud Assembly
• 1x Ltr Bel-Ray Engine Oil use: 0.8 Ltr
• 1x Ltr Bel-Ray Gear Oil use: 0.12 Ltr / change 0.10 Ltr
• Fit QMB 49/50cc+
Supported Models: GY6 139QMB 49cc-50cc 4-Stroke engines
Item Weight & Package Dimensions:
• 77 pounds | 30" (L) x 20" (W) x 18" (H)