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Caterpillar 3400 Series Parts

Not sure which part you need? Use our parts-request checklist.

Parts for the Caterpillar 3400 Series — the big mechanical inline-six and V-engine family that includes the 3406, 3408 and 3412. We stock PAI Industries aftermarket parts and our own JAK'S Diesel cylinder heads: cylinder heads, fuel injectors, turbochargers, gaskets, and complete rebuild kits, with cores and full-engine kit support.

Got an OEM, superseded, or competitor part number? Send it over and we'll cross-reference it to the right 3400 Series component. Ships same-day from Colorado, free freight over $1,000. Call or text (720) 445-6249.

Showing 36 of 373 Caterpillar 3400 Series Parts
GKP-3498 Cat / Caterpillar CUP PLUG
Caterpillar / International / Navistar · Models: 3406E / C15 / C16 / C18 / DT360 / DT466 / DT466E / DT530E / DT570
Catalog refs: DETROIT DIESEL 5139991 · CUMMINS 3945094
JAK'S JAKS-GKP-3498
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311030 Cat / Caterpillar PISTON
Caterpillar · Models: 3406
Catalog refs: CATERPILLAR 0R3782 · CATERPILLAR 0R4596
JAK'S JAKS-311030
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