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Caterpillar 3406E Parts

Get the CAT 3406E parts that keep your truck earning: cylinder heads, fuel injectors, turbochargers, gaskets, and full inframe rebuild kits, stocked and shipped same-day from our Denver-area warehouse. We carry PAI Industries aftermarket components alongside JAK'S Diesel performance heads, so you can match the build to the job.

Not sure a number fits your 3406E? That's our wheelhouse. Send us the OEM, competitor, or superseded part number and we'll cross-reference it against the right part before you buy. Request a quote or call/text (720) 445-6249 for same-day answers. Free freight on orders over $1,000.

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Choosing the Right Caterpillar 3406E 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