... cummins L360 20 4.made in china 1.Diesel engine part piston top 49413952.Original Cummins part 3.Good ... or L/C1. Cummins part piston apply for ISBe engine number:3966721,3972884,4897512,4941395,3967507,A3919564,A3919565,A3923537,A3925878, ... A39077072. Truck engine part, original Cummins part DescriptionPart Nopiston 6BT 4BT3907163piston 6BT ...