Caterpillar 3300 Series Parts

Parts for the Caterpillar 3300 series — the 3304 and 3306 inline diesels that still run trucks, gensets, marine rigs, and off-highway iron decades after they left the line. JAK'S Diesel stocks cylinder heads, fuel injectors, turbochargers, gaskets, and full rebuild kits for these older mechanical engines, with PAI Industries aftermarket coverage across the platform.

Because the 3300 series is a long-running family, many factory part numbers have been superseded. Have an old CAT number off a tag, a parts book, or a competitor listing? Send it over — we cross-reference OEM, superseded, and aftermarket numbers to confirm the right part the first time. Call or text (720) 445-6249 for a quote.