Holley 4150 & 4150 Fast Idle Cam Lever For GM With Divorced Choke. This part is used on Holley carbs with a divorced choke. Lever is mounted on end of throttle shaft attached to carb. List # 3139, 3140, 3240, 3245, 3246, 3247, 3267, 3268, 3367, 3370, 3417, 3418, 3419, 3429, 3605, 3606, 3607, 3608, 3609, 3806, 3807, 3810, 3811, 3814, 3815, 3836, 3837, 3838, 3639, 3910, 3911, 4053, 4054, 4296, 4489, 4490, 4491, 4492, 4493, 4554, 4555, 4556, 4557, 4558, 4559 & 4815.
