Rotor Assembly For 2015-18 Detroit DD15 A4720901480
4720901480, A4720901480, EA4720901480, R4720901480, RA4720901480
Turbo Rotor Assemblies
New CHRA and Rotor Assemblies for Diesel Turbocharger Rebuilds
The rotor assembly — also called the CHRA (Center Housing Rotating Assembly) or cartridge — is the core of the turbocharger. It contains the shaft, turbine wheel, compressor wheel, bearing housing, bearings, seals and thrust components as a pre-assembled, pre-balanced unit. Replacing the rotor assembly is the fastest way to rebuild a turbo: drop in the new CHRA, bolt the compressor and turbine housings back on, and the turbo is restored to new-build specifications without sourcing individual bearings, seals and wheels. We stock brand new rotor assemblies for Holset, Garrett and BorgWarner turbochargers covering Cummins, CAT, Detroit, Ford and other platforms. Each CHRA ships VSR-balanced and matched by turbo model. US stock, no core charge.
- 100% Brand New
- VSR Balanced
- OEM-Spec Quality
- US Stock, Fast Dispatch
- Direct-Fit Replacement
- 1-Year Warranty
- No Core Charge
Rotor Assembly For Cummins ISX HE561V 3767615
3767622, 3593822, 3767615, 3792786, 3767630, 3774640, 3767622, 3774626, 3774601, 3780526, 3795162, 3780526, 3792776, 3795162, 3774612, 3774612, 2881785, 2881997, 2840521, 2840521, 2838153, 2838154, 2836357, 2840519, 2836356, 2840520, 2838154, 2836357,4309076, 4042413, 4042411, 4045034, 4045018, 4045031, 4032760, 4956010, 4955425, 4032673, 4032066
Rotor Assembly For Cummins HE551V TURBO 2881993
2881993
Rotor Assembly For 06-10 PACCAR MX13 HE531VE 3767294
1944763, 1944763PEX, 1944763PEX, 1975197, 2049933, 2049933PEX, 2052194, 2117933, 2842125, 3767294, 3791941, 5355096
Rotor Assembly For For Detroit 14.0L HE531V TURBO3781169
33781169, 23539062, 23536422, R23539062, R23536422, 23536802, 2836825, 2836826, 4047598, 4047269, etc
Rotor Assembly For PACCAR MX13 EPA13 HE500VG 1907281
1907281, 1907281PEX, 1907281PRX, 1940999, 1940999PEX, 1940999PRX, 1973273, 1973273PEX, 1973273PRX, 2134455, 2134455PEX, 2134455PRX, 3781186, 3781188, 3788165, 3791937, 3791940, 3791940H, 3792556, 3792560, 4031058, 5322072, 5355091/S088
Rotor Assembly For Cummins ISX15 HE451V 2882111
2882111RX, 2882111, 2841220, 3792574, 3795144, 3773561, 3767305, 2841221, 3767306, 3773562, 3792581, 5350506
Rotor Assembly For Volvo Mack D13 MP8 Turbo kit w/VGT 85151101/85151100
85116644, 85121073, 85123532, 85136181, 85140458, 85151100, 85000685, 85000874, 85003139, 85003232, 85003612, 85013031, 85013288, 85013597, 21023366, 21042277, 21178109, 21358880
Rotor Assembly For Cummins X15 HE400VG 5459710
5459710RX, 5459710, 5358001 RX, 5459710, 5459710RX, 5358001RX, 5358454, 5358001, 5458936, 5458936H, 5458936HX, 5358452, 5351486, 5454978, 5358001RX, 5358454, 5358001, 5458936, 5458936H, 5458936HX, 5358452, 5351486
Rotor Assembly For Cummins HE351VE 3770973
3770973, 3799833, 2834900, 2834955, 4955447, 4955876, 4043137, 3799833, 2882075, R8048234AG, 68002428AA, 68003401AA, 68027068AA, 68031095AA, 68038167AA, 68048234AA, 68048234AB，3770974, 3790483, 3770978, 4043137, 4046837, 68048234AF, 4955876 5325950H
New Turbo Rotor Assembly For Turbo Cummins HE451V HE431VE 3792574 2882112RX
3792574, 2882112R
Rotor Assembly for 2128138 HE400VG for PaccarMX13 13.0L
2128138
Pre-Built, Pre-Balanced — The Fastest Path to a Turbo Rebuild
A rotor assembly turns a multi-step turbo rebuild into a one-step cartridge swap. Instead of pressing wheels, fitting bearings, measuring clearances and balancing the rotating group, the shop drops in a pre-built, pre-balanced CHRA and bolts the housings on. We stock assemblies for the turbo models shops see most.
Pre-Built CHRA — Drop In and Bolt Up
Every rotor assembly ships as a complete, pre-assembled CHRA — shaft, turbine wheel, compressor wheel, bearing housing, bearings, seals, thrust components and heat shield. All internal clearances are set, all components are new, and the rotating group is balanced. Open the box, install the CHRA, bolt on the housings.
VSR Balanced to OEM Standards
The CHRA is specific to the turbo model — shaft diameter, wheel sizes, bearing housing configuration and seal groove dimensions all vary. We match by turbo model (HE300VG, HE400VG, GT3782V, S300V, etc.) and OEM cartridge part number.
Cuts Rebuild Bench Time in Half
Every rotor assembly is VSR-balanced (Vibration Sorting Rig) — the assembled rotating group is spun at operating speed while a computer measures and corrects imbalance. This is the same balancing process used in OEM turbo production. A VSR-balanced CHRA runs smoother and lasts longer than a manually balanced rebuild.
New Shaft, New Wheels, New Bearings
A full turbo rebuild from individual parts — pressing wheels, fitting bearings, measuring clearances, balancing — takes experienced technicians significant bench time. A CHRA swap eliminates most of that work. The shop saves labor hours and the customer gets the turbo back faster.
Matched by Turbo Model and Cartridge Number
We stock twenty-two rotor assembly configurations covering the most commonly serviced turbo models in North American diesel. Consistent wholesale pricing from US stock. See the wholesale page.
The Fastest Path Back to a Working Turbo
One-year warranty on every rotor assembly. See the warranty page.
Pre-Built CHRA — Drop In and Bolt Up
Every rotor assembly ships as a complete, pre-assembled CHRA — shaft, turbine wheel, compressor wheel, bearing housing, bearings, seals, thrust components and heat shield. All internal clearances are set, all components are new, and the rotating group is balanced. Open the box, install the CHRA, bolt on the housings.
VSR Balanced to OEM Standards
The CHRA is specific to the turbo model — shaft diameter, wheel sizes, bearing housing configuration and seal groove dimensions all vary. We match by turbo model (HE300VG, HE400VG, GT3782V, S300V, etc.) and OEM cartridge part number.
Cuts Rebuild Bench Time in Half
Every rotor assembly is VSR-balanced (Vibration Sorting Rig) — the assembled rotating group is spun at operating speed while a computer measures and corrects imbalance. This is the same balancing process used in OEM turbo production. A VSR-balanced CHRA runs smoother and lasts longer than a manually balanced rebuild.
New Shaft, New Wheels, New Bearings
A full turbo rebuild from individual parts — pressing wheels, fitting bearings, measuring clearances, balancing — takes experienced technicians significant bench time. A CHRA swap eliminates most of that work. The shop saves labor hours and the customer gets the turbo back faster.
Matched by Turbo Model and Cartridge Number
We stock twenty-two rotor assembly configurations covering the most commonly serviced turbo models in North American diesel. Consistent wholesale pricing from US stock. See the wholesale page.
The Fastest Path Back to a Working Turbo
One-year warranty on every rotor assembly. See the warranty page.
WHY CHOOSE US
Drop-in turbo core, balanced and ready
We match the CHRA to your turbo model, VSR-balance every unit, and hold twenty-two configurations on a US shelf. More about our company and quality process.
FAQ
The rotor assembly (CHRA, cartridge) is the complete rotating core of a turbocharger. It includes the bearing housing, shaft, turbine wheel, compressor wheel, journal bearings, thrust bearings, seals, and internal hardware — everything between the compressor housing and turbine housing. It is pre-assembled and balanced as a unit.
A repair kit contains only the wear items (bearings, seals, thrust components) — the shop disassembles the existing CHRA and replaces those items individually. A rotor assembly is a complete, pre-built CHRA with new wheels, new shaft, new bearings and new seals already assembled and balanced. The rotor assembly is faster to install but costs more than a kit because it includes the wheels and shaft.
By turbo model and CHRA part number. The turbo model identifies the family; the part number confirms the exact variant (wheel sizes, bearing housing version). The number on the original CHRA or the turbo's dataplate is the most reliable identifier.
Yes. Every rotor assembly is VSR-balanced before shipping. The assembled rotating group is spun at high speed while vibration is measured and corrected by material removal. A VSR balance report is available on request.
All units are 100% brand new — new shaft, new wheels, new bearings, new seals. No remanufactured cores. One-year warranty.
Yes. Rebuild shops order rotor assemblies as regular stock items. Consistent wholesale pricing from US inventory. See the wholesale page.
Turbo Rotor Assembly Guide
The rotor assembly is the rebuild shortcut — a complete, pre-balanced turbo core that eliminates the most labor-intensive steps of a turbocharger rebuild.
CHRA vs Repair Kit: When to Use Each
| Scenario | Best choice | Why |
|---|---|---|
| Bearings worn, wheels good | Repair kit | Reuse wheels and shaft, replace only wear items |
| Wheels damaged, shaft scored | Rotor assembly | New wheels, shaft and bearings as a balanced unit |
| Shop lacks balancing equipment | Rotor assembly | Pre-balanced, no VSR needed at the shop |
| Fast turnaround needed | Rotor assembly | Drop-in swap, minimal bench time |
What VSR Balancing Means
VSR (Vibration Sorting Rig) balancing spins the complete rotating assembly — shaft, turbine wheel, compressor wheel — at operating speed while sensors measure vibration amplitude and phase angle. The machine calculates where material needs to be removed to bring the assembly within tolerance. Material is removed by grinding small amounts from the compressor nut or shaft, and the process repeats until vibration falls below the OEM threshold. A properly VSR-balanced CHRA runs smoother, generates less bearing load, and lasts longer than a manually balanced assembly.
Installation Notes
When installing a rotor assembly, prime the oil passages by pouring clean engine oil into the bearing housing oil inlet. Hand-spin the shaft to distribute oil across all bearing surfaces before connecting the oil feed line. Inspect the compressor and turbine housings for wear or damage before bolting them onto the new CHRA — a damaged housing on a new CHRA defeats the purpose of the rebuild. Torque all housing bolts to spec and check for oil leaks at idle before loading the engine.
