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Cummins ISX / ISX15 / X15 Parts

Everything you need to keep a Cummins ISX, ISX15, or X15 running, in one place: inframe and overhaul kits, cylinder heads, fuel injectors, turbochargers, gaskets, and the hard parts that go with them. JAK'S Diesel ships same-day, with free freight on orders over $1,000.

Not sure which part fits? The ISX platform splits into single-cam and dual-cam builds, and the right kit depends on your exact engine. Have a PAI, OEM, superseded, or competitor part number? Cross-reference it here or request a quote and we'll confirm the correct part before you buy. Call or text (720) 445-6249.

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Choosing the Right Cummins ISX / ISX15 / X15 Parts

Heavy-duty diesel components must be matched to the exact engine and application. Before ordering from this collection, verify the part number, engine model, engine serial number, and any casting or calibration number shown on the original component.

Fitment information to have ready

  • OEM, dealer, casting, or interchange part number
  • Engine manufacturer, model, and engine serial number (ESN)
  • Truck year and model when the component is chassis-specific
  • Core details for remanufactured or exchange components

Need a fitment check?

Use the OEM cross-reference tool or text a clear photo of the part tag to (720) 445-6249. A JAK'S Diesel specialist can confirm the match before the part ships.

Got a Number We Don't List?

Text a photo of the part tag — a specialist crosses it and quotes you fast.

Text a Part-Tag Photo(720) 445-6249