Description

The AR 2739 is a precision-matched set of three 20mm ceramic plungers designed for the high-volume RK, RKA, and RW Series pumps. Because these plungers are 20mm in diameter, they are typically found on pumps moving 4.0 to 5.5 GPM. Replacing them as a complete set of three is essential to maintain a balanced load on the pump’s crankshaft and connecting rods.