Caterpillar Parts
Caterpillar heavy-duty diesel parts in one place — cylinder heads, inframe and overhaul rebuild kits, fuel injectors, turbochargers, gaskets and the hard parts that keep CAT engines working. From the on-highway C15 and 3406E to the C7/C9, C13 and the legacy 3406B/C, we carry new and remanufactured options, shipped same-day with free freight on orders over $1,000.
Not sure which part fits your CAT? Send an OEM, competitor or superseded part number — cross-referencing is what we do best. Use the OEM cross-reference tool or request a quote, or call/text (720) 445-6249.
Choosing the Right Caterpillar 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.