QMB139 PAIR Style Cylinder Head
Item# QMB139-PAIR-Style-Cylinder-Head

QMB139 PAIR Style Cylinder Head

By Gas Scooters

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$39.39

$59.99 Price with Coupon $39.39

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About QMB139 PAIR Style Cylinder Head

PAIR Style 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.

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