8*187.5 Crankcase Bolts (pair) for Scooters & Mopeds

Left-Side Crankcase Bolts for GY6 125-150 cc Scooters and Mopeds

These 8*187.5 crankcase bolts are made for the left side of the crankcase on GY6 125-150 cc engines used in a range of Chinese scooters and mopeds. Securing the crankcase properly depends on this part. Each bolt is 188mm long and uses an M8x1.25 thread. It is one of the essential scooter bolts, screws & hardware items for maintenance or repair work.

Build and Fitting

The thread sections measure 19mm and 15mm, which helps the bolts seat correctly in your engine. They are built to handle the loads normally seen in scooter engines. When you replace crankcase bolts, matching the correct sizes is key to dependable operation.

Fitting Tips and Upkeep

Swapping out crankcase bolts is a simple job and can help stop leaks while keeping the engine sealed. Check the bolts from time to time for wear or damage, especially on higher-mileage scooters or after engine work. Good condition here supports a longer engine life.

Specifications

• Overall Length: 188mm
• Thread Size: M8x1.25
• Thread Lengths: 19mm, 15mm
• Fits: GY6 150cc (157QMJ) engines, left side of crankcase, 2 needed (sold as a pair)

Fitment

Fits:

• GY6 150cc (157QMJ) (left side of crankcase)

How to choose: Use 8 x 187.5 mm bolts with M8x1.25 thread and 19 mm and 15 mm thread lengths, 2 per engine.

Where it goes: part #8 on the crankcase diagram for the GY6 150cc (157QMJ).

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