New Genuine Garrett GTA4702 Low Pressure Turbocharger

CAT C13 ACERT 12.5L | KCB | 743279-5004S

This New Genuine Garrett GTA4702 Low Pressure Turbocharger is a direct replacement turbo for Caterpillar C13 ACERT 12.5L diesel engines, including engines with the KCB serial number prefix.

Garrett part number 743279-5004S is the low-pressure turbocharger used in the factory CAT C13 ACERT compound twin-turbo system. This is the larger low-pressure turbo that works together with the engine's separate high-pressure turbocharger to provide the airflow required by the C13 ACERT.

Built by Garrett, this is a brand-new genuine replacement turbocharger designed to provide the correct fit, airflow, and performance for compatible Caterpillar C13 applications.

Specifications

• Manufacturer: Garrett
• Turbo Model: GTA4702 / GTA4702B
• Garrett Part Number: 743279-5004S
• Condition: New Genuine Garrett
• Engine Manufacturer: Caterpillar
• Engine: CAT C13 ACERT
• Displacement: 12.5L
• Engine Serial Prefix: KCB
• Turbo Position: Low Pressure
• Turbo System: Compound / Twin Turbo
• Fuel Type: Diesel
• CAT OE Number: 239-5581
• CAT Reman Number: 10R-2027

CAT C13 ACERT Applications

This turbocharger is designed for Caterpillar C13 ACERT engines using the factory compound turbocharger system.

Common applications include C13-powered highway trucks from manufacturers such as:

• Peterbilt
• Kenworth
• Other heavy-duty trucks equipped with compatible CAT C13 ACERT engines

This is specifically the low-pressure turbocharger in the compound system. 

Cross Reference / Interchange Numbers

Garrett

• 743279-5004S
• 743279-5004
• 743279-0004
• 743279-5001S
• 743279-5001
• 743279-0001
• 743279-5003S
• 743279-5003
• 743279-0003
• 743279-5006S
• 743279-5006
• 743279-0006
• 743279-9001S
• 743279-9001
• 743279-9004S
• 743279-9004
• 743279-9006S
• 743279-9006

Caterpillar

• 239-5581
• 2395581
• 239-5583
• 2395583
• 10R-2027
• 10R2027

Genuine Garrett Replacement

The CAT C13 ACERT uses a compound turbo system where the high- and low-pressure turbochargers work together. Installing the correct turbo in the correct position is critical for proper boost, airflow, and engine performance.

This 743279-5004S GTA4702 is the low-pressure turbocharger, making it the correct replacement for compatible C13 ACERT applications originally equipped with this Garrett/Caterpillar turbo configuration.

Please verify your existing turbocharger part number or engine serial number before ordering. If you're unsure about fitment, contact us with your CAT engine serial number or existing turbo part number and we can help confirm the correct turbocharger.