Air and Fuel Superchargers, Turbochargers and Components

On3 Performance

55mm GT30 T3 Series Turbocharger

$379.00

SKU: gt30j-8

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Ships by Aug 4
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Description

The On3 Performance 55mm GT30 Journal Bearing Turbocharger is a T3 Series unit designed for enhanced performance. This turbocharger features a durable cast compressor wheel and a reliable journal bearing system. On the cold side, it boasts a 55mm compressor wheel inducer, a 4.0-inch inlet, and a 2.0-inch compressor outlet, enabling efficient airflow. The exhaust side is engineered with a 60mm inducer and a 55mm exducer, complemented by a 360-degree thrust bearing for robust operation. This turbocharger is part of On3 Performance's line of turbochargers, known for their precision engineering and high-performance solutions. This specific turbocharger is intended for racing competition only and is not legal for use in highway or street vehicles.

MIA's Description

The On3 Performance 55mm GT30 Journal Bearing Turbocharger is a T3 Series turbocharger featuring a cast compressor wheel and journal bearing. It has a 55mm compressor wheel inducer with a 4.0-inch inlet and a 2.0-inch compressor outlet on the cold side. The exhaust side features a 60mm inducer and a 55mm exducer, with a 360-degree thrust bearing.

Fitment

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Specifications

BrandOn3 Performance
Part Numbergt30j-8
CategoryAir and Fuel

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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