Slim-Jims Aluminum push rods BT66-84

These pushrods are made from aerospace quality aluminum tubing and heat treated steel ends. These lightweight pushrods provide maximum durability and long life. Jims pushrods replace the stock steel rods (OEM 17904-66) and still retain the stock hydraulic unit. Pushrods fits on Big Twin 1966 to 1984 have 32 threads per inch, with a 3/8" ball rocker end and 1/4" ball tappet end. Sold in sets of 4.