Universal Parts QMB139 Cylinder Head - Emissions ES3 Please Note: The roller weights

Please Note: The roller weights are greased from the factory and should be inspected before install to verify they are properly seated in the ramps

Hi-Pressure Braided Brake Line (black) L: 110cm (43

Raising your cooling system's maximum operating pressure increases your boiling point

modern aesthetic and safety of your scooter with the Royal Alloy Front Right Body Turn Signal

Version check: Find your version number on the 8-digit product ID code on the battery cover or frame — the last two digits are your version (e

Universal Parts QMB139 Cylinder Head - Emissions ES3 Please Note: The roller weightsUniversal Parts PAIR Style (Emissions) Cylinder Head for 50cc 4 stroke QMB139 engines. 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. 39mm Bore Intake Port Diameter: 17mm Exhaust Port Diameter: 18mm Emission Control System: Pulsed Secondary Air Injection System(PAIR) QMB139 50cc 49cc , Various unlisted makes models