This new part is used on Holley 2 barrel model 2300 & 4 barrel model 3160, 4150, 4150HP, 4160, 4500; TWO CIRCUIT carbs and NO accelerator pump transfer tube. Gasket is ~ 0.065" thick. NOTE: THIS GASKET "WILL NOT" FIT LIST # 6425, 6708, 6709 & 7010 OR MODEL 4165,4175 & 4180.
