Russ Flagle, the owner of Indy Cylinder Head, was kind enough to sit down with us and explain the ins and outs of his brand-new D12 head for Cummins 12-valve competition engines. A stock 12-valve ...

However, when camshafts and cylinder heads are thrown in the mix, the familiarity isn't nearly as strong for many enthusiasts. A Cummins engine's internal airflow—and methods of improving it ...

AFA’s Head Gasket Set for Cummins’ ISX/QSX Series SOHC engines contains all the gaskets needed to replace the cylinder head. The set includes AFA’s multilayer steel core-designed graphite ...

Cummins Inc. has introduced ... Like the ISL, the ISC now includes roller followers for increased durability. Both engines feature mid-stop cylinder liners for ease of rebuild.