Blue Line M6x60mm intake manifold stud bolt pair (SKU 1100-1333) for 139QMB 50cc scooter engines — two steel double-ended M6x1.00 studs with dark phosphate finish, smooth shank, and rounded tips; 63mm overall length Blue Line M6x60mm intake manifold stud bolt pair (SKU 1100-1333) for 139QMB 50cc scooter engines — two steel double-ended M6x1.00 studs with dark phosphate finish, smooth shank, and rounded tips; 63mm overall length
Blue Line M6x60mm intake manifold stud bolt pair (SKU 1100-1333) for 139QMB 50cc scooter engines — two steel double-ended M6x1.00 studs with dark phosphate finish, smooth shank, and rounded tips; 63mm overall length

Blue Line

Blue Line M6x60mm Intake Manifold Stud Pair - 139QMB

SKU 1100-1333
$3.00
Shipping calculated at checkout.
Description

Replace worn or missing intake manifold mounting studs with this pair of Blue Line M6x60mm studs for 139QMB-based 50cc scooter engines. Each steel, double-ended stud has M6x1.00 threads, a smooth center shank, rounded tips, and a dark phosphate finish. These studs secure the intake manifold to the cylinder head. Sold as a pair. SKU: 1100-1333 | MPN: 4789.

Key Features

  • Pair of steel, double-ended intake manifold studs
  • M6x1.00 threads on both ends
  • Smooth center shank with rounded tips
  • Dark phosphate finish
  • Designed for 139QMB-based 50cc scooter engines

Specifications

  • Brand: Blue Line
  • SKU: 1100-1333
  • MPN: 4789
  • Thread: M6x1.00
  • Overall length: 63mm
  • Finish: Dark phosphate
  • Quantity: 2 studs
  • Country of origin: China

Confirmed Scooter Fitment

Make Model
Chicago Scooter Company Bella Classic 50
Chicago Scooter Company Nitro Sport 50
Chicago Scooter Company Pug 50
Chicago Scooter Company go
Chicago Scooter Company go MAX

 

Compatible Engine Codes

Engine Code Engine Code Engine Code Engine Code
139QMA 139QMB 1P39QMB 1P39QMA-2
YN139QMB JJ1P39QMB 139FMA-2 BD1P39QMB
BN139QMB 147QMD Other QMA models Other QMB models

 

Check the engine code stamped on your scooter before ordering. 50cc engines marked with a listed QMA, QMB, QMD, or FMA code may use this stud size, but verify the M6x1.00 thread and 63mm overall length against the original part.
Product Diagrams
Features
  • Steel M6x1.00 intake manifold stud bolts — pair, dark phosphate finish (SKU: 1100-1333)
  • Double-ended stud: M6x1.00 thread on both ends | Smooth shank with rounded tips | 63mm OAL
  • Mounts intake manifold to cylinder head on 139QMB-based 50cc/80cc engines
  • Confirmed fit: CSC Bella Classic 50, Nitro Sport 50, Pug 50, go, and go MAX
  • Fits all 139QMB/QMA engine codes | Made in China | Brand: Blue Line
Specifications

Brand: Blue Line | SKU: 1100-1333 | MPN: 4789 | Thread: M6x1.00 | OAL: 63mm | Finish: Dark phosphate | Qty: 2 (pair) | Engine: 139QMB 50cc | Origin: China
Model Fitments

CSC Bella Classic 50 | CSC Nitro Sport 50 | CSC Pug 50 | CSC go | CSC go MAX | All 139QMB/QMA-based 50cc/80cc engines | Engine codes: QMA, QMB, QMD, FMA | M6x1.00 intake manifold stud bolt pair | SKU: 1100-1333
  • 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.
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