What The 3032060 Does
The HT3B is the exhaust-driven charger that feeds the 14L big-cam. Exhaust gas spins the turbine wheel, the shaft drives the compressor wheel, and the compressor stuffs pressurized air into the intake. Lose that and you lose boost pressure, throttle response and fuel economy in one shot. On a loaded Class-8 tractor the driver feels it first on a grade — the truck pulls flat and the pyrometer climbs.
This unit uses cast turbine and compressor housings machined to the factory mounting flanges, so the exhaust manifold flange, the V-band or clamp connections and the oil feed and drain land where the old unit did. The rotating assembly is dynamically balanced. That matters on a shaft spinning six figures in RPM — an out-of-balance assembly eats the bearing and takes the housings with it.
The turbine wheel is a high-nickel alloy chosen for sustained high exhaust gas temperature. Big-cam 855s pulling heavy see long, hot duty cycles, and that's where cheap turbine material creeps and cracks at the blade root. This is aftermarket, premium quality, built as a direct replacement, not a factory-supplied part.
Why These Numbers Cross
3032060 is the headline number, and the Cummins/Holset numbers 3801935, 3801939, 3801968, 3801967, 3801936, 3801938 and 3801990 all cross to the same HT3B-series service unit. Those numbers are listed for identification only. Turbochargers pick up multiple numbers over a production run because the engine builder assigns a new number when an application changes, when a kit adds or drops gaskets and clamps, or when a supersession is issued.
Underneath, the housings, the flange pattern, the turbine and compressor wheel combination and the oil feed and drain locations are the shared hardware. That's what makes the cross valid. A number stamped on a service box tells you which kit it shipped in, not necessarily that it is a different charger. Long strings of numbers in the same family are a normal sign of a well-serviced platform.
Treat the cross as a starting point, not a guarantee. Big-cam 855s were built over a long stretch and got revised through their life. The number cast or tagged on the unit you are pulling off, plus your engine serial number, is what actually decides the match.
Check Before You Order
Pull the tag or read the casting on the old turbo first. Compare it to 3032060 or one of the Cummins/Holset numbers above. Then confirm your engine serial number — NT855, NTA855 and N14 are the covered family, and the serial narrows which service unit the engine left the plant with. We can't promise fitment from a truck year or a VIN alone; verify against the old part.
While the turbo is off, find out what killed it. Check the oil feed line for coking and restriction, check the drain for kinks and sludge, and inspect the air filter and charge piping for anything that could have gone through the compressor. A new charger bolted onto a dirty oil supply or a leaking intake will fail the same way.
3032060 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 3032060. Use them to identify the part — then confirm the exact fit by VIN or the number stamped on your old unit before you order. An interchange is a starting point, not a fitment guarantee.
| Brand / Line | Cross-Reference Numbers |
|---|---|
| Cummins/Holset | 3801935, 3801939, 3801968, 3801967, 3801936, 3801938, 3801990 |
Frequently asked questions
Is 3032060 the same turbo as 3801935 or 3801990?
They cross to the same HT3B-series unit. Those Cummins/Holset numbers are listed for identification only and cover the same core hardware and mounting flanges. Confirm by reading the tag or casting number on the turbo you are removing, and check your engine serial number before you order.
How do I know the turbo is bad and not the fuel side?
Check shaft play by hand — excessive radial or axial movement means the bearing is gone. Look for oil in the charge piping or the exhaust housing, and check the compressor wheel for contact marks on the housing. Low boost with clean wheels and tight shaft play usually points at a leak in the charge air piping or a fuel-side issue instead.
Do I need to prime the turbo before starting the engine?
Yes. Pre-fill the oil inlet and turn the shaft by hand so the bearing is wet before the first start. Crank with the fuel shut off until you have oil pressure, then start and idle for several minutes before loading it. A dry start is one of the fastest ways to kill a new charger.
Not sure it fits? We check before you pay.
Run your VIN and we’ll match parts to your exact truck, or call the counter — a person who knows trucks verifies fitment by OEM number before the order ships. No wrong-box returns.
More cross-reference guides
Need the part, not just the reading?
Every part below is a Premium Quality aftermarket Direct Replacement with published OEM cross-reference numbers, a 6+ month warranty and same-business-day shipping from Tacoma, WA. Not sure it fits? Run your VIN — or call and a person who knows trucks will verify fitment before you pay.