F/S is a Greddy 60mm Silver Warning Gauge Meter. The gauge is new never used. The gauge part # is 16000826 Check out greddy.com for the gauge. It comes with a Trust O2 Sensor with the gauge. Its better than a stock O2. It can replace a stock O2 so if you need a O2 sensor you can't go wrong. I'm asking 200+shipping. And if you know Greddy this gauge goes for 350+Shipping the pic is of the gauge you will be getting. the gauge lights up amber like a Si cluster. this is a pic of the gauge lit at night.