"Golf 2 button" manometer for boost pressure, 0.4 - 2.4 bar

This boost pressure manometer built into a Golf 2 "button type" support is essential for a turbo or compressor fitment.
Indications are given through coloured graduations (red, yellow, green)
Fits perfectly into the passenger compartment! With integrated pressure sensor
It is strongly recommended to add a filter upstream of the manometer to prevent damaging it with oil blowback.

Each time the ignition is turned, the booster gauge is calibrated on the atmospheric pressure. However, do not start the engine for approx. 1 second after the gauge is supplied to avoid any wrong values