You are buying 1 single piston and ring kit in Standard Size (Bore Size 3.875") for the following vehicles.

1996-2002  Chryslers Truck Van SUV 2.5L/ 150 OHV L4 8V "P" D shape dish top.

1983-2002 AMC JEEP Truck Van SUV 2.5L  150 OHV L4  8V "E,H,P,U" D shape dish top.

1987-2006 AMC JEEP Truck Van SUV 4.0L  242 OHV L6 12V "M,L,S" D shape dish top

Any questions feel free to ask