A range of JMT brand Oil Filler Plug Motorcycle Oil Temperature Gauges designed to replace the original oil filler cap on a large range of motorbikes.
Part supplied is correct thread and dipstick length, generic images used.
The display can be rotated in the adapter to the desired position. For optimal needle damping the stainless steel indicator face is filled with oil and rubber mounted in the adapter. The air bubble in the damping oil is for pressure compensation due to thermal fluctuations.