All Cummins ISX engines have the XPI common-rail injection system, which uses a crankshaft-driven pump to keep the fuel rail – seen of the left side of this 11.9L ISX – pressurized to more ...

Press-in type camshaft bushings: On earlier-model ISX dual cam engines, the injector camshafts are massive compared to the valve camshaft, with a journal diameter of 85 mm (3.346 in.) and weights ...

Manufactured using revolutionary Synteq XP™ nanofiber media technology, Donaldson Blue™ filters deliver the cleanest fuel to fuel systems and injectors.

Cummins '07 engine ratings include three new ISX models -- the 425 ST, the 485 ST, and the straight ISX 600.