HX35W 4044094 Turbocharger for Cummins QSB 6BT Tier 3
4044094, 4044095, 4044095H, 4955747, 495574700
HX35 Turbochargers
New Holset HX35W Turbochargers for Dodge Ram 12-Valve Cummins and Industrial 6BT Engines
The Holset HX35W is the turbo that started the Dodge Ram Cummins legend. It powered the 1994-1998 twelve-valve 5.9L — the truck that launched diesel pickup culture — and it runs on Cummins 6BT and QSB industrial engines across construction, agriculture and power generation. The HX35W is a simple wastegated turbo with no electronics, no VGT vanes, and no scan tool required for installation. We stock brand new HX35W turbochargers for both the Dodge Ram twelve-valve application (including the HX35W/HX40 hybrid for performance builds) and the Cummins QSB 6BT Tier 3 industrial configuration. Every unit is new-built, balanced, and ready to bolt on. No core charge. Shops, enthusiasts and distributors order from US stock.
- 100% Brand New
- OEM-Spec Quality
- US Stock, Fast Dispatch
- Direct-Fit Replacement
- 1-Year Warranty
- No Core Charge
- Performance Hybrid Available
The Turbo That Started Diesel Pickup Culture
The twelve-valve Ram community is one of the most dedicated in diesel — these trucks are built, modified, maintained and passed down. When the turbo needs replacing, the owner wants either a stock-spec HX35W or a performance hybrid that adds airflow without changing the plumbing. We stock both, brand new, with no core to return.
The Twelve-Valve Ram Turbo — Stock and Hybrid
Every HX35W we ship is 100% new — new CHRA, new wheels, new wastegate. No core deposit, no old unit to return. On thirty-year-old trucks, finding a rebuildable core in good condition is increasingly difficult — a new unit sidesteps that problem entirely.
HX40 Hybrid for Builds Running Added Fuel
We stock the standard HX35W for stock-spec twelve-valve restoration and daily driving, plus the HX35W/HX40 hybrid for builds running added fuel. The hybrid uses the same flanges and plumbing as the stock turbo but flows more air through a larger compressor wheel — a bolt-on upgrade with no piping modifications.
Industrial 6BT QSB Also Covered
The HX35W fits the 1994-1998 Dodge Ram 2500/3500 twelve-valve pickup and the Cummins QSB 6BT Tier 3 industrial engine. Same turbo family, different calibrations for each platform.
Zero Electronics, Pure Wrench Work
No VGT, no electronic actuator, no scan tool calibration. The HX35W uses a simple vacuum-operated wastegate actuator. Installation is mechanical: bolt on, connect oil lines, connect the wastegate vacuum line, start and go. Diagnosis is manual: check shaft play, inspect seals, test wastegate function.
Ships New With Wastegate Actuator
The twelve-valve Cummins Ram created the diesel pickup market. The HX35W was the turbo that made those early trucks work — and the trucks that survive are treated as platforms worth maintaining and building. Parts availability for this turbo is part of what keeps the twelve-valve ecosystem alive.
Enthusiast and Industrial Supply
One-year warranty on every HX35W, handled by our US team. Before install, check the oil feed line for restriction and inspect the wastegate vacuum line for cracks or leaks. See the warranty page.
The Twelve-Valve Ram Turbo — Stock and Hybrid
Every HX35W we ship is 100% new — new CHRA, new wheels, new wastegate. No core deposit, no old unit to return. On thirty-year-old trucks, finding a rebuildable core in good condition is increasingly difficult — a new unit sidesteps that problem entirely.
HX40 Hybrid for Builds Running Added Fuel
We stock the standard HX35W for stock-spec twelve-valve restoration and daily driving, plus the HX35W/HX40 hybrid for builds running added fuel. The hybrid uses the same flanges and plumbing as the stock turbo but flows more air through a larger compressor wheel — a bolt-on upgrade with no piping modifications.
Industrial 6BT QSB Also Covered
The HX35W fits the 1994-1998 Dodge Ram 2500/3500 twelve-valve pickup and the Cummins QSB 6BT Tier 3 industrial engine. Same turbo family, different calibrations for each platform.
Zero Electronics, Pure Wrench Work
No VGT, no electronic actuator, no scan tool calibration. The HX35W uses a simple vacuum-operated wastegate actuator. Installation is mechanical: bolt on, connect oil lines, connect the wastegate vacuum line, start and go. Diagnosis is manual: check shaft play, inspect seals, test wastegate function.
Ships New With Wastegate Actuator
The twelve-valve Cummins Ram created the diesel pickup market. The HX35W was the turbo that made those early trucks work — and the trucks that survive are treated as platforms worth maintaining and building. Parts availability for this turbo is part of what keeps the twelve-valve ecosystem alive.
Enthusiast and Industrial Supply
One-year warranty on every HX35W, handled by our US team. Before install, check the oil feed line for restriction and inspect the wastegate vacuum line for cracks or leaks. See the warranty page.
WHY CHOOSE US
Twelve-valve turbo supply, stock or hybrid, ready to ship
We match by application, hold both configurations on a US shelf, and support the twelve-valve community with parts that keep these trucks on the road. More about our company and quality process.
FAQ
The HX35W is used on the 1994-1998 Dodge Ram 2500 and 3500 with the twelve-valve Cummins 6BT diesel (and early 1998.5-2002 24-valve trucks in some configurations). It is also used on Cummins QSB 6BT industrial engines in construction equipment, generators and agricultural applications. Each application uses a different Holset part number.
The HX35W/HX40 hybrid uses the HX35W mounting flanges and plumbing connections but pairs them with a larger compressor wheel from the HX40 family. The result is more airflow capacity without changing any piping on the truck — a direct bolt-on upgrade for twelve-valve builds running injector upgrades, fuel plate modifications or pump tuning. It is not a stock replacement; it is a performance option for trucks with added fueling.
No. The HX35W has no electronic components. Installation is entirely mechanical: bolt the turbo to the exhaust manifold, connect oil feed and drain lines, connect the vacuum line to the wastegate actuator, and start the engine. No scan tool, no calibration, no software.
Depends on the year. The 1998.5-2002 24-valve Ram also used the HX35W in some configurations. The 2003-2004 24-valve Ram used the HE341W, and the 2004.5-2007 used the HE351CW. Match by the Holset part number on the old turbo, not by valve count alone.
All units are 100% brand new. No rebuilt cores, no core charge. New CHRA, new wheels, new wastegate actuator. Balanced and OEM-spec. One-year warranty.
Yes. Diesel shops specializing in twelve-valve Ram builds and industrial 6BT maintenance order HX35W turbos regularly. Consistent wholesale pricing from US stock. See the wholesale page.
Holset HX35W Turbocharger Guide
The HX35W occupies a unique place in turbo history — it is the turbo that defined the diesel pickup truck for an entire generation. Understanding its role, its variants, and its position in the Cummins Ram turbo timeline helps owners and shops make the right choice.
Ram Cummins Turbo Timeline: Where the HX35W Fits
| Years | Valves | Turbo | Type |
|---|---|---|---|
| 1994-1998 | 12V | HX35W | Wastegated |
| 1998.5-2002 | 24V | HX35W / HY35W | Wastegated |
| 2004.5-2007 | 24V | HE351CW | Wastegated |
| 2007.5-2012 | 24V | HE351VE | VGT |
| 2013+ | 24V | HE300VG | VGT |
Stock HX35W vs HX35W/HX40 Hybrid
The stock HX35W matches the engine's factory fueling — it spools fast, delivers adequate boost for the stock injection pump setting, and runs reliably for hundreds of thousands of miles. The HX35W/HX40 hybrid is designed for trucks where the owner has increased fueling beyond the stock turbo's capacity — injector upgrades, fuel plate modifications, governor spring kits, or upgraded injection pumps. The hybrid flows more air through a larger compressor wheel while retaining the stock turbine housing and manifold flange, keeping the install as a direct bolt-on swap. For a stock twelve-valve, the standard HX35W is the correct choice — the hybrid on a stock-fuel truck will spool slower and feel sluggish at low RPM.
HX35W Part Number Splits on the Ram
The twelve-valve Ram HX35W comes in different part numbers based on model year (1994-1995 early vs 1995 late-1998), transmission (automatic vs manual) and emissions configuration (49-state vs California). The turbine housing size and wastegate calibration differ between auto and manual trucks because the automatic transmission Ram was rated at lower horsepower than the manual. Match by the Holset part number on the old turbo's dataplate — year alone is not sufficient because of mid-year production changes.
Why the Twelve-Valve Still Matters
The twelve-valve Cummins 6BT has no electronic fuel injection, no emissions aftertreatment, no DPF, no DEF, no EGR. It is a purely mechanical engine with an inline injection pump — the last generation of diesel pickup engine that a shade-tree mechanic can fully maintain and modify without a laptop. That simplicity is why the twelve-valve community persists and grows even as the trucks age past thirty years. The HX35W is the turbo that matches that philosophy: mechanical, rebuildable, upgradeable, and universally understood.
