When you start making BIG horsepower in your 4BT there is only one pushrod that will do - Hamilton Cams 07-P-004E Extreme Duty Pushrods. Rated to 500+ HP.
- For Applications over 500HP
- Intake Pushrod - 3/8″ .095″ Wall
- Exhaust Pushrod7/16″ .120″ Wall
- For High Performance Applications
Hamilton Cams Extreme Duty Pushrods (3.9L 4BT Cummins)