700R4 4L60E SECOND GEAR SUPER SERVO SUPERIOR NUMBER K012. A74905H 700R4 high performance intermediate billet servo. This Superior / Fairbanks servo has 35% more holding power (fluid apply area) than the Corvette servo found on other brands. It’ll give a firmer 1-2 and 2-3 shift. Can be installed without removing the transmission or valve body.