Fuel Line Plumbing

Swapping a Caterpillar, Cummins, or Detroit Series 60 engine into your semi truck often leaves the factory fuel lines mismatched to the new powerplant's fuel system and routing—risking poor delivery, leaks, or downtime. Kustom Truck Parts offers engine-specific fuel line plumbing kits and stainless braided hose kits designed for seamless conversions in heavy-duty chassis like Kenworth, Peterbilt, Freightliner, and Western Star.

Our lineup includes:

  • Full fuel line plumbing kits (Caterpillar, Cummins, Detroit), routing from splitter valves to engine
  • Stainless braided hose kits for Cat 3406E, C15, 3406B, C12, and Detroit Series 60—with standard or high-mount fuel filter bases
  • Complementary components like fuel/water separators, primary/secondary filters, hand priming pumps, and filter restriction kits

Available with options for compression fittings/composite hose or JIC fittings/nitrile braided hose and stainless braided hose kit configurations, where applicable. Each kit includes necessary hoses, adapters, fittings, and hardware for complete, reliable installation—ensuring consistent fuel flow, performance, and longevity in demanding repowers or conversion projects.

Browse below for your exact engine match. Pair with our engine harnesses, mounting brackets, or CAC tubes for a turnkey swap. Need fitment confirmation? Contact our team for guidance.
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