Description Genuine Cummins aftercooler core kit for marine QSC, QSL and QSM11 engines, supplied with zinc electrode plugs and O-ring seals for reliable charge-air cooling and corrosion protection. • Cross References/Supersedes: 4058256, 3393493 • Applications: Marine aftercooler core service on Cummins QSC, QSL and QSM11 engine installations. • Kit contents: Two 1/2 NPTF x 2 in zinc electrode plugs (68241) and two O-ring seals (4025341). A core return fee may apply. Please call us on 1300 202 272 to find out more.