Updated
| Feature | Fleece Performance - 94-02 HX35 63mm FMW Holset Cheetah Turbocharger (FPE-HX3… | Upgrade Turbocharger Billet Impeller Replacement for Holset Cummins Various I… |
|---|---|---|
| Year Coverage | 1994-2002 RAM 2500 | — |
| Warranty | Manufacturer (per listing) | — |
| Core Charge | None required | — |
| See the Listing | See the Listing |
Different Cummins Engines, Different Chassis Classes
Both products serve Cummins engine families but on dramatically different engines and chassis classes. The Fleece Cheetah is 1994-2002 Ram pickup 5.9L; the Weonefit Upgrade is Class-8 ISX15 15-liter.
The Fleece Cheetah upgrade callout:
Fleece HX35 Cheetah: Ram 5.9L Performance Upgrade
The Fleece Performance HX35 Cheetah is the 1994-2002 Dodge Ram 5.9L Cummins performance upgrade on the Holset HX35 frame.
The Cheetah rating:
Weonefit Upgrade: Class-8 ISX15 Wheel-Only
The Weonefit Upgrade is a billet (CNC-machined) compressor wheel replacement for the Holset HE400VG and HE451VE turbochargers on the 2005-onward Cummins ISX15 chassis. The wheel-only SKU class requires turbo teardown and re-assembly at the rebuilder shop.
The Weonefit OE cross-reference:
Rebuilder-Tier Context
Different Cummins engine family carries different rebuilder-tier anchors.
On the 1994-2002 Ram 5.9L side, Fleece Performance carries the rebuilder-tier institutional position — documented Cheetah HX35 review density (31 reviews at 4.4 / 5 on Thoroughbred Diesel for 1994-2002 variant) and broad production history. Rebuilder-tier alternatives include BD Diesel HX35 Stock Replacement, Industrial Injection HX35 specialty, and Holset HX35 OEM reman programs.
On the Class-8 ISX15 side, the Weonefit Upgrade billet impeller sits at the entry tier. Rebuilder-tier alternatives include Industrial Injection ISX15 specialty units, ATS Diesel Performance ISX15 turbo upgrades, and the Cummins reman OEM HE400VG / HE451VE complete-turbo programs at the high-four-figure tier. The Weonefit Upgrade is the cost-saving wheel-only alternative when the existing housings pass inspection.
Install Discipline Across The Two Sides
The labor envelopes differ structurally between these two SKUs. The Fleece Cheetah on the 1994-2002 Ram is a complete-turbo replacement that bolts up to the OE manifold and downpipe after the failed HX35 comes off — straightforward complete-turbo work in a few hours. The Weonefit Upgrade on the Class-8 Cummins ISX15 is wheel-only and requires turbo teardown, wheel balancing against the existing center cartridge, and re-assembly with the housings reused — typically a full shop day at a Class-8 rebuilder shop with the bench balancing equipment.
For shops moving between Ram pickup work and Class-8 over-the-road truck work, the workflow muscle memory differs. Pickup-chassis turbo work uses lift access and standard pickup-truck hand tools; Class-8 rebuilder shop work uses bay access for the larger ISX15 chassis along with the bench balancing equipment for wheel-only rebuilds. Cross-stocking both lets the shop cover both Cummins applications, but the labor-side skill sets do not transfer directly between Ram pickup and Class-8 platforms.
If You\'re Coming From The 1994-2002 Ram Side
If you landed on the Fleece HX35 Cheetah listing first, the Weonefit Upgrade billet impeller is not the cross-shop on your chassis. The Weonefit Upgrade is a Class-8 Cummins ISX15 wheel-only part — different engine size, different chassis class, different SKU class. The relevant 1994-2002 Ram cross-shop runs through BD Diesel HX35 Stock Replacement, Industrial Injection HX35 alternatives, or other Fleece Performance Cheetah variants on the same chassis.
If You\'re Coming From The Class-8 Cummins ISX15 Side
If you landed on the Weonefit Upgrade listing first, the Fleece HX35 Cheetah is not the cross-shop on your chassis. The Cheetah is a 1994-2002 Ram pickup 5.9L Cummins part — three times smaller engine displacement, pickup-truck chassis rather than Class-8 over-the-road truck. The relevant Cummins ISX15 cross-shop runs through Industrial Injection ISX15 specialty units, ATS Diesel Performance ISX15 turbo upgrades, the Cummins reman OEM HE400VG / HE451VE programs, or the Cummins X15 HE400VG complete-turbo listings adjacent to the wheel-only Weonefit path.
For underlying turbocharger engineering background, the Wikipedia turbocharger reference documents the compressor-and-turbine architecture both products implement. The TSReman Turbo University service-part catalog publishes the Holset HX35 and HE400VG / HE451VE cross-reference manifests. The Rotomaster understanding turbochargers reference covers the rebuilder-tier diagnostic protocol across both Cummins engine families.
Verdict: Engine Size + Chassis Class Selects The Part
No head-to-head winner. Different Cummins engine sizes, different chassis classes, different SKU classes.
Pick the Fleece Performance HX35 Cheetah for a 1994-2002 Dodge Ram 5.9L Cummins performance upgrade. Pick the Weonefit Upgrade billet impeller for a Class-8 Cummins ISX15 chassis with a rebuilder shop ready to tear down the HE400VG / HE451VE turbo for compressor wheel replacement. Cross-stock both only for fleet operators running both engine families.
1994-2002 Ram 5.9L performance upgrade:
Check Price on AmazonCummins Cross-Cohort Performance-Upgrade Questions
- Are these two parts cross-shoppable on the same vehicle?
- No. The Fleece HX35 Cheetah is a complete-turbo upgrade for the 1994-2002 Dodge Ram 5.9L Cummins on the Holset HX35 frame. The Weonefit Upgrade billet impeller is a compressor wheel-only replacement for the Cummins ISX15 15-liter Class-8 truck turbocharger (HE400VG / HE451VE frame). Different Cummins engine displacements (5.9L vs 15L), different applications (Ram pickup vs Class-8 over-the-road), different turbo frames (HX35 fixed vs HE400VG/HE451VE variable-geometry), different SKU classes (complete turbo vs wheel-only).
- Both are billet wheel upgrades — what is the difference?
- Both products feature a billet (CNC-machined from solid metal stock) compressor wheel, but in completely different SKU classes. The Fleece Cheetah ships as a complete turbo assembly — compressor housing, turbine housing, center cartridge, wastegate actuator — built around the proprietary 63mm Forged Milled Wheel. The Weonefit Upgrade ships only the billet wheel, requiring turbo teardown, wheel balancing, and re-assembly at the rebuilder shop using the existing HE400VG / HE451VE housings, center cartridge, and electronic actuator.
- What chassis applications do these serve?
- The Fleece HX35 Cheetah serves the 1994-2002 Dodge Ram 2500 / 3500 pickup chassis with the 5.9L Cummins engine — pickup-truck performance buyers running aftermarket fueling above the OE envelope. The Weonefit Upgrade serves the Class-8 Kenworth / Peterbilt / Freightliner / International over-the-road truck chassis with the 2005-onward Cummins ISX15 engine — fleet operators or rebuilder shops working on heavy-duty Class-8 trucks. Different chassis classes by an order of magnitude.
- How do the warranty terms compare?
- Fleece Performance publishes rebuilder-tier institutional warranty terms via authorized dealer channels (Thoroughbred Diesel, Crossroad Garage, Summit Racing) typically running 1-2 years on the Cheetah line. Weonefit publishes a customer-service-first framing on the Upgrade billet impeller listing — encouraging buyers to contact for fitment verification before purchase — but does not publish an equivalent multi-year written warranty term. For high-mileage Class-8 commercial service, neither pick matches rebuilder-tier institutional warranty depth (Industrial Injection ISX15 specialty, ATS Diesel Performance ISX15 turbo upgrades).
Use our Turbo Replacement Cost Estimator to size aftermarket spend on either Cummins application. For the broader heavy-duty diesel turbocharger context, route to the cross-engine turbocharger roundup.