GY6 50cc (139QMB) M6x60mm Intake Manifold Stud Pair

Intake Manifold Studs for 50cc Scooters

This two-stud set is built for 50cc scooter engines based on the 139QMB design. Both ends are steel, double-ended, and threaded M6x1.00. The middle section is smooth with rounded tips. You can find more options among GY6 50cc scooter parts to keep your scooter running well. The dark phosphate coating gives the studs a neat, practical look.

Build and Design

These studs are made from tough steel, so they hold up well inside the engine setup of your scooter. The rounded ends help you start them into place without fuss, and the smooth center section makes them easier to slide into position. The overall length is 63mm, sized to suit the scooters they are meant for.

Signs It Is Time to Swap Them Out

Consider replacing intake manifold studs if you notice an air leak or see damage while working on the scooter. Healthy studs help the engine run properly and keep the intake sealed. Checking them regularly will show you when a new pair is needed.

Specifications

• Material: Steel
• Size: M6x1.00
• Overall Length: 63mm
• Finish: Dark phosphate
• Quantity: 2 studs
• OEM Part Number: 4789
• Country of Origin: China
• Fits: 139QMB-based 50cc scooter engines; Chicago Scooter Company Bella Classic 50, Nitro Sport 50, Pug 50

Compatibility

Fits:

• Chicago Scooter Company Bella Classic 50
• Chicago Scooter Company Nitro Sport 50
• Chicago Scooter Company Pug 50
• Chicago Scooter Company go and go MAX
• Engines: 139QMB, 139QMA, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD, other QMA and QMB models

How to choose: Find the engine code stamped on your scooter and compare it with the list above. Then confirm the stud is M6x1.00 threaded and has a 63mm overall length.

Shop more: GY6 50cc Scooter Parts (139QMB) · GY6 Scooter Parts · Scooter Fuel System Parts · Scooter Bolts, Screws & Hardware · Scooter Parts