Blue Line Fuel Level Sensor / Sending Unit: GY6/139QMB

Be Sense-able: OEM Fuel Level Sensor Restore your dashboard's accuracy with the Blue Line Fuel Sending Unit . Specifically designed for GY6 50cc (139QMB) and 150cc (157QMJ) scooters, this fuel level sensor features the common 3-tab "twist-on" mounting interface. If your fuel gauge is stuck on empty or fluctuating wildly, a corroded or failed sending unit is the likely culprit. This OEM-spec replacement ensures your gauge reflects the true level of your tank, preventing unexpected "out-of-gas" breakdowns. Technical Performance Features Precision Float Arm: Engineered with a high-sensitivity potentiometer to provide a smooth, linear resistance signal to your analog or digital fuel gauge. Twist-On 3-Tab Interface: Designed for modern Chinese-manufactured tanks that utilize a metal locking ring (sold separately) rather than traditional bolts. Fuel-Resistant Components: Features a high-density float and reinforced wiring harness designed to withstand long-term immersion in modern ethanol-blended gasoline. Plug-and-Play Wiring: Comes with a standard electrical connector for a seamless interface with your scooter's factory wiring harness. Comprehensive Fitment Guide This sending unit fits nearly all 50cc-150cc scooters using a twist-lock fuel tank port: Brand / Make Compatibility Status Chinese Brands TaoTao, Peace Sports, Icebear, Wolf, ZNEN, Jonway, Bintelli Engine Types 50cc (139QMB), 125cc (152QMI), 150cc (157QMJ) Mounting Style 3-Tab Twist-On Only (Not for 4-Bolt tanks) Technical Specifications Mounting Type: 3-Tab Twist Ring Compatibility: Chinese GY6-Based Scooters and 139QMB Scooters Material: Steel Arm / Synthetic Float Wiring: Multi-Pin Connector Mechanic's Note: Fuel senders are incredibly sensitive. Fitment Warning: This unit is for the twist-on style ring. If your fuel tank has four bolts holding the sender down, you need SKU 1300-1158 instead. SKU: 1300-1161, 1300-4100 Original ZNEN Part Number: 3780A-ALA6-9000 Vendor: BLUE LINE Fuel sending unit for GY6 and 139QMB scooters. This sender has a twist-on ring with three tabs to keep it in place. For the 4 bolt fuel sender, see 1300-1158