CAT 389-2203 Turbocharger Cartridge for C18 C32. Turbocharger cartridge group for selected Caterpillar applications. Public CAT specifications and compatible-model examples are listed below; confirm fitment by serial number. Contact RUIPO for stock status and international quotation.
CAT 389-2203 Turbocharger Cartridge for C18 C32 is identified by Caterpillar part number 389-2203. The turbocharger cartridge is the rotating core within a turbocharger assembly. Caterpillar lists this part for selected C18 and C32 engine arrangements. A cartridge is not automatically a complete turbocharger with every external housing or installation accessory. This listing is intended for engineers, fleet maintenance teams and international B2B parts buyers who need a clear product specification and a defensible method of checking the application before ordering.
The turbocharger cartridge is the rotating core within a turbocharger assembly. Caterpillar lists this part for selected C18 and C32 engine arrangements. A cartridge is not automatically a complete turbocharger with every external housing or installation accessory.
Exhaust-driven charging is a system, not just one hardware item. If a compressor wheel is clean but the engine still struggles under load, check the intake filter, charge-air hoses, exhaust restriction and oil supply before assuming this component has failed. A correct physical match also depends on the engine-specific inlet and outlet interfaces.
| Specification | Details |
|---|---|
| Brand / part identification | Caterpillar / 389-2203 |
| Part number without hyphen | 3892203 |
| Product type | Turbocharger cartridge group |
| Part number | 389-2203 |
| Product type | Turbocharger Cartridge Group |
| CAT-listed material | Ductile (spheroidal) iron |
| CAT-listed length | 10.1 in |
| CAT-listed height | 14.3 in |
| CAT Reman alternative | 20R-3142 (separate reman item) |
Technical data above is limited to publicly verifiable CAT product information. Unlisted dimensions, pressure ratings, torque values and electrical characteristics are not assumed. Please verify the current official drawing and applicable serial number before installation.
| Equipment Type | CAT Models / Applications |
|---|---|
| Marine Engines | C18, C32 |
| Generator Sets | C32 |
| Generators | SR5 |
Fitment guidance: Model numbers are representative applications from the Caterpillar public product listing, not a guarantee for every production year or serial number. Engine and machine configurations vary, so final compatibility must be checked in CAT SIS or with the relevant parts diagram before shipment.
Do not replace a component based on one symptom alone. Inspection should include the adjacent parts, installation condition and available equipment diagnostics so that a new part is not installed into an unresolved system fault.
Turbocharger work demands clean lubrication and contamination control. A replacement cartridge or complete turbo must be matched to the installed arrangement; mixing visually similar units can create boost, mounting or cooling problems. Use the applicable Caterpillar service manual for torque figures, clearance settings, calibration instructions and safe test procedures; those values can differ between engine arrangements.
For other components used in related engine or maintenance systems, review these RUIPO product listings. They are cross-references for sourcing and are not a claim of direct interchangeability:
The turbocharger cartridge is the rotating core within a turbocharger assembly. Caterpillar lists this part for selected C18 and C32 engine arrangements. A cartridge is not automatically a complete turbocharger with every external housing or installation accessory.
Public Caterpillar parts data lists selected examples including Marine Engines: C18, C32; Generator Sets: C32; Generators: SR5. This is an application guide only; confirm compatibility by serial number and engine arrangement.
Please confirm the original CAT part number, equipment/engine model, serial number, correct mounting arrangement and quantity. For repair jobs, ask whether related seals or hardware are required.
RUIPO Spare Parts can review the part number and your equipment information, check current stock and available packaging, and prepare a quotation with shipping details. Product availability is not guaranteed until confirmed.
Request a quote: Contact RUIPO Spare Parts with the CAT part number, required quantity, destination country and serial-number information. We can check the details before an export quotation is issued.
