The SPOOLOGIC SL-100-073 is a brand new, direct drop-in stock replacement turbocharger for 1996-1998 Dodge Ram 2500 and 3500 trucks with the 5.9L 12-Valve Cummins. Built on the Holset HX35 platform — the same wastegated, fixed-geometry architecture as your factory turbo — matched to factory specifications so the truck runs the way it did the day it left the dealer.

This is a true stock replacement, not a performance upgrade. It’s the right turbo for daily drivers, work and fleet trucks, and restoration builds where the goal is dependable factory performance — no tuning, no supporting mods, just a turbo that bolts on and runs.

54/78mm Compressor Wheel

Factory-spec 8+8 splitter blade compressor wheel sized to OEM specifications and matched to the factory turbine and housing geometry for stock boost response and stock power output. The tighter 78mm exducer versus the earlier 94-95 HX35 spec reflects Dodge’s mid-generation revision to this platform.

• Inducer: 54mm
• Exducer: 78mm
• Blade design: 8+8 splitter blade

70/60mm Turbine Wheel

Factory-spec 12-blade turbine wheel matched to the compressor and housing geometry for proper spool, factory boost response, and factory drive pressure.

• Turbine inducer: 70mm
• Turbine exducer: 60mm
• Blade count: 12

Wastegated, Fixed-Geometry Architecture

The SL-100-073 keeps the same wastegated, fixed-geometry HX35 design as the factory unit it replaces — same compressor and turbine sizing, same housing geometry, same boost control setup. Bolt it on and the truck goes back to running factory power and factory boost.

What’s Included

• 1 SPOOLOGIC Stock HX35 Cummins turbocharger — brand new, VSR balanced
• 1 turbo flange gasket
• 1 oil drain gasket

Features

• Direct drop-in fit for 1996-1998 5.9L 12-Valve Cummins trucks
• Built on the Holset HX35 platform — same as factory
• 54/78mm 8+8 splitter blade compressor wheel
• 70/60mm 12-blade turbine wheel
• Wastegated, fixed-geometry architecture — matches OEM
• Supports factory horsepower and torque — no tuning required
• Extreme duty journal bearings, 360-degree thrust bearing, step gap seal rings, VSR balanced
• No core charge — ever
• Built brand new, never remanufactured

Fits 1996-1998 5.9L Cummins 12-Valve

• 1996 – 1998 Dodge Ram 2500 / 3500 5.9L Cummins 12-Valve

Turbo Applications

• Replaces factory Holset HX35 (1996-1998 5.9L 12-Valve Cummins)

Replaces Factory OEM Part Numbers

• 3534919
• 3539369
• 3539371
• 3539373
• 3802678
• R5010276AA
• R5010278AA

1-Year Limited Warranty

Every SPOOLOGIC turbocharger is covered by a 1-Year Limited Warranty against defects in materials and workmanship from the date of purchase. Warranty coverage requires that the unit first be shipped back to SPOOLOGIC for inspection. If SPOOLOGIC determines the failure was caused by a defect in materials or workmanship, the turbocharger will be repaired or replaced at SPOOLOGIC’s discretion. Warranty does not cover damage from foreign object debris, oil starvation, contaminated oil, extended oil change intervals, over-boosting, over-fueling, improper installation, use outside the listed fitment, cosmetic wear, or normal heat cycling marks. Warranty does not cover labor, shipping, towing, downtime, or any other costs outside the turbocharger itself.