If you run a Cummins ISM, you already know the turbo is the heart of how this 10.8L workhorse makes power. The ISM has powered everything from Class 8 highway tractors to fire trucks and motorcoaches since the late 1990s, and across its production life it ran two very different turbocharger philosophies: the fixed-geometry Holset
Cummins ISM Turbocharger Guide: HX55 & HE571VE for On-Highway Trucks Read More »
The Cummins ISL turbocharger question lands on our bench almost every week: which Holset unit actually belongs on a transit bus, a medium-duty box truck, or a vocational chassis running an ISL? For the vast majority of 8.9L ISL platforms built from the mid-2000s onward, the answer is the Holset HE400WG, a wastegated fixed-geometry charger
Cummins ISL Turbocharger Guide: HE400WG for Bus and Medium Duty Applications Read More »
If you run a medium duty Cummins ISC, the turbocharger bolted to that 8.3L block is almost certainly a Holset HX40. It is one of the most proven fixed-geometry turbos ever built, but even a workhorse like the HX40 eventually loses a thrust bearing, cracks a turbine housing, or starts shaft-walking after 400,000 miles of
Cummins ISC Turbocharger Guide: HX40 & Replacement Options for Medium Duty Trucks Read More »
If you’re running a 12-valve or 24-valve Cummins ISB 5.9L under the hood of a Dodge Ram, the turbocharger bolted to that exhaust manifold is the single biggest factor in how your truck pulls, spools, and survives a 350,000-mile life. The two chargers that define this platform are the Holset HX35 and the variable-geometry HE341VE,
Cummins ISB 5.9L Turbocharger Guide: HX35 vs HE341VE for Dodge Ram Applications Read More »
If you run a Cummins ISB 6.7L, sooner or later the Holset variable geometry turbocharger is going to demand your attention. The VGT (variable geometry turbocharger) on this engine is one of the smartest pieces of hardware Cummins ever bolted on, and also one of the most misunderstood. When it works, you get crisp throttle
Cummins ISB 6.7L Turbocharger Guide: Variable Geometry Operation & Common Failures Read More »
If you’ve turned a wrench on a 6.7L Cummins, you already know the HE351VE vs HE300VG debate isn’t academic. These two Holset variable geometry turbos define two distinct generations of the Ram 2500 and 3500, and knowing which one bolts to your engine, how it fails, and what it costs to replace can save you
HE351VE vs HE300VG: Complete Comparison for Ram 2500 & 3500 Cummins Owners Read More »
If you wrench on 5.9L Cummins trucks, you already know the Holset turbo bolted to that inline-six is half the reason these engines move freight for 400,000 miles without blinking. But the Ram 2500/3500 5.9L Cummins turbocharger lineup confuses a lot of owners and even some shops, because Dodge ran three very different Holset units
Ram 2500/3500 5.9L Cummins Turbocharger Guide: HX35, HY35 & HE341VE Explained Read More »
If you run a 6.7L Cummins in a Ram 2500 or 3500, the turbocharger bolted to that engine is either a Holset HE351VE or a Holset HE300VG, and knowing which one you have changes everything about diagnosis, parts ordering, and repair cost. Both are variable geometry turbos (VGT), both use an electric actuator, and both
Ram 2500/3500 6.7L Cummins Turbocharger Guide: HE351VE vs HE300VG & Replacement Cost Read More »
If you wrench on OBS and Super Duty Fords, you already know the 7.3L Powerstroke turbocharger is one of the most reliable factory units ever bolted to a light-duty diesel. But “reliable” doesn’t mean “all the same.” Between 1994 and 2003, Ford ran three distinct Garrett pedestal-mount turbos on the 7.3L: the TP38, the early-1999
Ford 7.3L Powerstroke Turbocharger Guide: TP38, E99 & GTP38 Models Explained Read More »
The Ford 6.7L Powerstroke turbocharger is one of the most sophisticated factory diesel turbos ever bolted to a pickup, and when it fails it takes your truck down hard. The 2011-2014 trucks run the Garrett GT32 SST, a single-sequential unit with a double-sided compressor wheel that does the work of two turbos in one housing.
Ford 6.7L Powerstroke Turbocharger Guide: GT32 Failures, Symptoms & Replacement Cost Read More »
