GY6 Seal (Exhaust Valve Stem, Pair)

GY6 Exhaust Valve Stem Seal for 125cc to 169cc Engines

This GY6 exhaust valve stem seal suits a range of 125cc, 150cc, and 169cc engines. The package holds two seals, which help keep exhaust valves sealed so the engine can run efficiently. You can find it alongside other GY6 scooter parts when you are planning routine upkeep or a repair. Its dimensions are precise, making it a dependable option for keeping your engine running smoothly.

Dimensions and Compatibility

The set contains two seals. Each one measures 10mm across the outside, 5mm across the inside, and 8mm in height. It works with several engine codes, such as 157QMJ, 161QMK, and 152QMI, along with others. If the code on your engine includes "QM" or "FM," these seals should match your setup.

When to Replace Valve Stem Seals

Consider replacing valve stem seals if you see oil leaking, notice heavy smoke coming from the exhaust, or find that engine power has dropped. Checking them during regular maintenance can catch problems early and help the engine stay in good shape.

Specifications

• Set: 2
• Overall Outer Diameter: 10mm
• Inner Diameter: 5mm
• Overall Height: 8mm
• Fits: GY6 150cc (157QMJ) engines and other 157QMJ-based 125cc/150cc/169cc engines

Fitment

Fits:

• GY6 150cc (157QMJ)
• GY6 125cc and 150cc engines with codes 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A, and other QMJ, QMK, QMI models (engine code includes "QM" or "FM")

How to choose: Compare the engine code stamped on your engine case with the codes above. Any code containing "QM" or "FM" is included.

Where it goes: It is part #1 in the camshaft and valve diagram for the GY6 150cc (157QMJ).

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