GY6 50cc (139QMB) Cam Chain Tensioner Kit

    Item# 25-914867

    Price:
    Sale price$3.60

    Description

    Cam Chain Tensioner Kit for 139QMB 50cc Scooters

    This cam chain tensioner kit is designed for the 139QMB 50cc four-stroke engine found in various scooters. It is important for maintaining proper tension on the timing chain, ensuring reliable engine performance. This part is among the necessary GY6 50cc scooter parts that help keep your engine running smoothly. It directly replaces the existing adjuster hardware at the cylinder, providing effective chain control during operation.

    Components Included

    The kit includes the tensioner body, a spring, a cap, a gasket, an O-ring, and two mounting bolts. Each piece works together to ensure the timing chain remains properly adjusted. The assembly is straightforward and designed for durability, allowing for consistent performance in your scooter's engine.

    Installation and Replacement

    This tensioner is specifically for the 139QMB engine family. When replacing your existing cam chain tensioner, ensure you match the original tensioner and mounting pattern for compatibility. If you notice any irregular noise from the engine or performance issues, it might be time to check this component.

    Specifications

    • Part Type: Cam-chain tensioner / adjuster assembly
    • Engine Family: 139QMB / QMB139 50cc four-stroke
    • Appearance: Metal two-bolt mounting body; includes spring, cap, gasket, and O-ring
    • Note: Cam chain is not included.

    Fitment

    This part fits several 50cc four-stroke scooters that utilize the 139QMB/QMB139 engine. Please confirm compatibility with your scooter model.

    • Compatible with 139QMB / QMB139 engines

    Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.

    Shop more: GY6 50cc Scooter Parts (139QMB) · GY6 Scooter Parts · Scooter Cylinder Heads & Valves · Scooter Chains & Sprockets · Scooter Parts

    Customer Reviews

    Payment & Security

    American Express Apple Pay Diners Club Discover Mastercard Shop Pay Visa

    Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.