Mahle Piston for Common Rail 'Cummins B series 3.9/5.9L
Mahle Piston Rings Set (Premium Chrome/Ceramic Top Ring Upgrade)
Three Piston Bore Size upgrade to choose from, stock bore, +.040″/1.0mm Bore and +.020″/.50mm Bore.
These rings will fit stock or Mahle aftermarket cast pistons.
Image my not be actual part.
This is only for 1 piston.