Polished Intake Manifold (non-egr, 28mm) for QMI, QMJ, GY6

Polished Intake Manifold for QMI, QMJ, and GY6 Engines

This polished manifold is made for 125cc and 150cc GY6 engines and uses a non-EGR layout with a 28mm inlet. It is one of the GY6 150cc scooter parts that helps air and fuel move into the engine more freely, which can add to output. It suits riders who want more power from their scooter.

Performance Benefits

The manifold has a smooth bore and a larger inlet diameter than the stock part. With more air and fuel reaching the cylinder, it can support higher power output. Fitted during an upgrade, it may also sharpen throttle response and improve overall performance.

Installation Considerations

Before fitting, confirm that your carburetor diameter matches the engine side of the manifold so the two parts seat properly. The 88mm runner length supports a proper air-fuel mixture.

Specifications

• Engine-side Bore: 27mm
• Carb-side Bore: 28.5mm
• Runner Length: 88mm
• Fits: GY6 150cc (157QMJ) engines with a non-EGR intake; 28mm carb-side bore

Fitment

Fits:

• GY6 150cc (157QMJ) (non-EGR engine)
• Other 125cc/150cc/169cc GY6 engines with codes such as 157QMJ, 161QMK, 152QMI, 1P61QMK, 154FMI, BN161QMK-A (non-EGR)

How to choose: Pick the non-EGR version if your engine has no exhaust gas return valve. Match your engine code to the list above and make sure the carb-side bore is 28mm.

Where it goes: part #15 on the cylinder head diagram for the GY6 150cc (157QMJ).

Also offered: GY6 Engines Intake Manifold - 28mm Performance (28mm performance manifold for GY6 engines; made by a different brand).

Other versions: The GY6 Intake Manifold Assembly, Blue Line, is a stock-style assembly with a 27mm engine-side bore: GY6 Intake Manifold Assembly. The 30mm High Flow manifold is built for 150cc-232cc GY6 engines: 30mm High Flow Intake Manifold for 150cc-232cc GY6.

Shop more: GY6 150cc Scooter Parts (157QMJ) · GY6 Scooter Parts · Scooter Fuel System Parts · Scooter Parts