For 8.9L ISL engines, the Cummins ISL/ISC HE431VE Turbocharger, part number 4352527RX, is an excellent choice. Remanufactured by PROTURBO REMAN, it comes with a 1-year warranty for peace of mind. Cross-reference numbers like 2835200, 2835722, and 2836544 ensure wide compatibility.