Universal Parts

Universal Carburetor Idle Spring: 50cc QMB139

SKU 151-199
$1.40
Shipping calculated at checkout.
Description

Universal Parts Carburetor Air Adjustment Spring for 50cc 4-stroke QMB139 engines.

Is your scooter stalling at red lights or surging unpredictably? A weak or corroded idle screw spring fails to hold your carburetor’s adjustment under engine vibration, leading to constant tuning headaches. This Universal Parts Air Adjustment Spring provides the precise tension needed to lock in your fuel mixture and restore a smooth, reliable idle.

  • Precision Tension: Engineered to maintain screw position even under high-RPM vibration.
  • Optimal Fit: 10mm length designed specifically for GY6/QMB139 carburetors.
  • Corrosion Resistant: Zinc-coated finish to prevent binding within the carburetor body.
    Brand Popular Models
    Generic GY6 All 50cc 4-Stroke QMB139 Engines
    Baja SC50, BE50
    Kymco Agility 50, People 50
    Product Diagrams
    • Same day shipping for orders placed before 2PM (CST) M-F
    • 30-day return period on eligible items
    • Flat-rate shipping for orders shipped to the 48 Contiguous United States.
    Since 1989

    Supplying parts and accessories for vintage and modern scooters since 1989 – Over Half a Million Served and Counting!

    Comprehensive Resource

    From wear-and-tear items like tires and oil filters to aftermarket parts from industry-leading brands.

    Dealer Focused

    With a committed team of dealer-focused sales reps and streamlined pricing and shipping processes, we are dedicated to supporting your business.

    Innovative

    Our team constantly strives to develop and source the best new products for your scooter.