What is the benefit of a ball-bearing center housing?

A ball-bearing center housing helps reduce turbo lag by allowing the turbine to spin up more quickly. This results in improved throttle response and boost delivery sooner in the RPM range compared to traditional journal bearing turbos.

What is the significance of the A/R 1.00 ratio on the turbine housing?

The A/R (Area/Radius) ratio of 1.00 on the turbine housing is chosen to provide a good balance between how quickly the turbo spools up (gets into boost) and its ability to produce high horsepower at higher RPMs.

What other modifications are typically needed when installing this turbocharger?

Installing a turbocharger like this often requires supporting modifications. These can include an upgraded engine management system for tuning, an improved fuel system to supply more fuel, a larger intercooler for cooler air, and a less restrictive exhaust system to help the turbo breathe.

HKS GTIII-4R Turbine 14001-AK035

Name: HKS GTIII-4R A/R 1.00 WG Turbine
Brand: HKS
Price: 3786.75 USD
Availability: InStock

HKS GTIII-4R A/R 1.00 WG Turbine

$3786.75

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

HKS GTIII-4R A/R 1.00 WG Turbine

Key Features

Fits: Not specified (universal application)
HKS is known for high-performance engine components.
GTIII-4R model designed for significant power upgrades.
Features a ball-bearing center housing for reduced lag and improved response.
Turbine housing has an A/R ratio of 1.00 for a balance of spool and top-end power.
Built to handle higher boost pressures and temperatures.

Secure CheckoutFast Shipping631-982-0042

Product Details

HKS is well-known for developing high-performance engine components, and their GTIII-4R turbine is a prime example of their commitment to forced induction technology. This particular unit, the GTIII-4R A/R 1.00 WG Turbine, is designed for enthusiasts looking to significantly upgrade their vehicle's power output through a more robust turbocharger system. It represents a substantial step up from stock turbochargers, offering improved airflow and the potential for much higher horsepower figures when properly integrated into an engine build.

The GTIII-4R features a ball-bearing center housing, which helps reduce turbo lag and improves throttle response compared to traditional journal bearing turbos. This advanced design allows the turbine to spool up more quickly, meaning you get boost sooner in the RPM range. The A/R ratio of 1.00 on the turbine housing is optimized for a balance between quick spool and high-end power, making it a versatile choice for many performance applications. Its robust construction is built to handle the increased demands of higher boost pressures and temperatures associated with performance tuning.

When installing a turbocharger like the GTIII-4R, it's crucial to remember that it's part of a larger system. You'll need to ensure your engine management system is properly tuned to take advantage of the increased airflow, and that your fuel system can supply adequate fuel. Supporting modifications such as an upgraded exhaust, intercooler, and intake are also highly recommended to maximize the turbo's potential and ensure engine longevity. This turbine is not CARB approved and cannot be shipped to California.