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Dodge Ram 12V Cummins HX35W HX40 hybrid turbo front view

76/64mm HX35W HX40 Hybrid Turbocharger for 1994-1998 Dodge Ram 5.9L 12V Cummins

This Holset HX35W configuration fits the 1994-1998 Dodge Ram 2500/3500 with the legendary 5.9L Cummins 6BT 12-valve diesel — the 2nd-gen Ram. It runs an HX40-style 76/64mm wheel setup inside the HX35W frame for stronger mid-range and top-end airflow than the stock unit, while bolting straight on. Fixed geometry, internal wastegate — no electronics anywhere. This is an aftermarket hybrid configuration; no direct OE or same-part interchange number has been verified. Built new, dynamically balanced, ships with gaskets. We supply diesel shops and distributors.

Turbo Model

HX35W / HX40 hybrid (76/64mm, fixed geometry, internal wastegate)

OEM / Interchange Numbers

Aftermarket hybrid — no direct OE or same-part interchange number has been verified for this assembly.

Related base: 3539343 — stock HX35W reference only, not a direct OE or same-part interchange for this hybrid assembly.

Application

1994-1998 Dodge Ram 2500/3500 5.9L 6BT 12V; aftermarket 76/64mm HX35W/HX40 hybrid with internal wastegate

Service & Support

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FAQ

The 1994-1998 Dodge Ram 2500/3500 with the 5-9L Cummins 6BT 12-valve diesel. This is an aftermarket 76/64mm HX35W/HX40 hybrid.

The 76/64mm HX40-style wheels flow more air than the stock HX35W wheels — better mid-range and top-end for trucks with fueling upgrades, while keeping bolt-on fitment.

Brand new, dynamically balanced, ships with gaskets. No core charge. One-year unlimited-mileage warranty.

Yes. US stock, volume pricing for diesel shops and distributors.

HX35W for the 12-Valve Cummins: The 2nd-Gen Ram Turbo

The 1994-1998 12-valve Cummins is the most beloved diesel engine in the pickup world — mechanical P7100 injection pump, no electronics, essentially unkillable. The HX35W is its turbo, and this HX40-wheel hybrid configuration gives the 12V more breathing room for trucks running fuel plate or governor spring upgrades.

Dodge Cummins turbo timeline

YearsEngineTurbo
1994-1998 (this page)5.9L 6BT 12VHX35W / HX40 hybrid
2004.5-20075.9L ISB 24VHE351CW
2007-20126.7L ISBHE351VE (VGT)

Cross Reference Numbers

Aftermarket hybrid — no direct OE or same-part interchange number has been verified for this assembly.

Related base: 3539343 — stock HX35W reference only, not a direct OE or same-part interchange for this hybrid assembly.

Installation and Care

  • Find out why the old turbo failed before installing the new one. Oil starvation or contaminated oil will destroy the replacement the same way.
  • Change the engine oil and filter. Flush or replace the oil feed line.
  • Replace the exhaust manifold and oil drain gaskets. Prime the turbo with clean oil before startup.
  • Check the intake ducting and wastegate hose for leaks. No electronic calibration is required for this fixed-geometry hybrid.

See our quality process for details.

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