Replacement plastic oil dipstick for the Baja Motorsports 200cc MB200 Mini Bike This dipstick varies slightly from the older model MB165 and is only compatible with the Baja MB200 6.5 Hp 200cc engine Replacement plastic oil dipstick for the Baja Motorsports 200cc MB200 Mini Bike. This dipstick varies slightly from the older model MB165 and is only compatible with the Baja MB200 6.5 Hp 200cc engine. A very common part that is often lost or broken. Thread Diameter: 0.665″ (16.9 mm)