52mm tachometer RPM boost water temperature oil temperature oil pressure exhaust temperature gauge voltmeter LCD digital display 7-color car instrument Product description: Boost gauge, water temperature gauge, oil temperature gauge, oil pressure gauge , exhaust temperature gauge with sensor. (Note: Air-fuel ratio meter without sensor needs to be purchased separately. Only suitable for narrow-band oxygen sensor) Suitable for 12-volt gasoline cars (tachometer is only suitable for 4/6/8-cylinder cars). The sensor thread size is 1/8ZG. LCD digital display 52mm meter, 7 backlight colors can be changed by buttons on the meter. Both include English installation instructions. Tachometer: 0~10x1000RPM Boost gauge: -30~35PSI Water temperature gauge: 40~140 Oil temperature gauge: 50~150 Oil pressure gauge: 0~ 150PSI Voltage meter: 8~18V Air-fuel ratio meter: 20:1~10:1 Exhaust temperature meter: 2~12100 Note: (A meter and meter stand are available For selection, dont buy the wrong one) Accessories: Suitable for 12-volt gasoline vehicles (the tachometer is only suitable for 4/6/8 cylinder cars) Product pictures: Tachometer Boost gauge Water temperature gauge Oil temperature gauge Oil pressure gauge Voltage gauge Air-fuel ratio gauge Exhaust gas temperature gauge