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Blue Line Cam Chain Tensioner Kit - 139QMB 50cc — product image 2

Blue Line Cam Chain Tensioner Kit - 139QMB 50cc

$4.00
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Blue Line Cam Chain Tensioner Kit - 139QMB 50cc — product image 2
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Blue Line Cam Chain Tensioner Kit - 139QMB 50cc

$4.00
Part number 1100-1299

Check dimensions and compatibility before ordering.

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Keep the timing chain properly tensioned on your 139QMB 50cc four-stroke scooter with this Blue Line cam chain tensioner assembly. It replaces the adjuster hardware at the cylinder, helping the chain stay controlled as the engine runs. The photo shows the tensioner body alongside its spring, cap, gasket, O-ring, and mounting bolts.

Features

  • Timing-chain control: Replaces the cam-chain adjuster/tensioner on compatible 139QMB engines.
  • Assembly shown: Tensioner body with spring, cap, sealing pieces and two mounting bolts pictured.
  • Engine-based fit: Suitable for listed Chinese-built 50cc four-stroke scooters that use the 139QMB/QMB139 engine and matching tensioner mount.

Specifications

  • Brand: Blue Line
  • Part number: 1100-1299
  • Part type: Cam-chain tensioner / adjuster assembly
  • Engine family: 139QMB / QMB139 50cc four-stroke
  • Appearance: Metal two-bolt mounting body; spring, cap, gasket and O-ring shown in product photo
  • Note: Cam chain is not included.

Model Fitment

Engine Application
139QMB / QMB139 Listed 50cc four-stroke scooters using the matching two-bolt cam-chain tensioner

 

Match your original tensioner and mounting pattern when ordering; model names alone do not identify the engine fitted to every scooter.

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