Below is the complete list of Caterpillar® truck engines we buy, sell, and rebuild—organized by family. Each link opens a detailed buyer’s guide (fitment notes, emissions era tips, ratings, and pre-buy checklists) built in the same JSJ Diesel layout. When you’re ready to see live stock, use the “Browse CAT Inventory” button below or inside any guide.
Legendary pre-emissions platform with strong drivability and simple plumbing. Match serial prefix and accessory layout for a clean drop-in.
High-volume OTR and vocational favorite. Choose by emissions era and harness compatibility; verify cooling/charge-air capacity for uprates.
Balanced weight and power. Confirm turbo strategy and aftertreatment health on emissions-era engines.
Lighter package that still pulls well in regional and vocational work. Verify front structure and accessory layout.
Great options for weight-sensitive builds and regional duty cycles; confirm ECM/harness generation to your cab loom.
Medium-duty workhorse. HEUI health and harness condition drive first-start success; confirm mount and fan spacing.
Durable legacy options when allowed by local compliance. Validate mounts, fan hub spacing, and flywheel housing.
Popular across vocational and medium-duty fleets. Check aftertreatment status (if equipped) and CAC integrity.
