Non-TSO’d 3-1/8″ quad gauge kit with 1-EGT (600-1600°F), 1-CHT (100-700°F), 1) Oil Temp (100-260°F), & 1) Oil Pressure gauge (0-100 psi). Kit includes 1 each senders: 712-2DWK EGT , 712-5WK CHT, 399-S9 Oil Temp, and 378-100KV Pressure Transducer. Wt: 10.5 oz. Westach Instruments.