If you're in the market for a turbo that really knows how to deliver, let me introduce you to the GTW3684JB, also known as the GTW6262JB. This 62mm journal bearing turbo is no joke—it’s got the potential to push out around 750HP if you’re ready to unleash it. With an .82 A/R and a T3 undivided inlet, it’s designed for serious performance enthusiasts who want a turbo that can keep up with their ambitions.
Now, I’ve had my hands on this turbo, and I can tell you it’s built to perform. The compressor wheel inducer measures in at 62.3mm, while the exducer is a solid 84.4mm. That’s some serious airflow potential. The turbine side isn’t slacking either, with a 71.0mm inducer and a 61.9mm exducer, making it a well-rounded piece of engineering. The turbine wheel trim is 76, which means it’s optimized for efficiency and power delivery.
One of the standout features here is the compressor housing. It’s a T04S frame with a 4” inlet and a 2.5” outlet, complete with a built-in and machined anti-surge. This is crucial if you’re looking to avoid compressor surge and keep your boost steady. Trust me, that’s something you’ll appreciate when you’re pushing your setup to the limit.
But, a word of caution: this isn’t a direct drop-in replacement for the smaller Garrett GT or GTX series turbos. The GTW series has a bulkier bearing housing, which means you’ll need to plan for that extra space. Plus, the oil feed and return fittings are different, so make sure you’ve got the right components on hand. Don’t worry, I’ve got you covered with some product codes for oil fittings and flanges:
When you’re setting this turbo up, you'll also want to grab the right turbine housing components:
In short, the GRT-TBO-911 ATP Turbo Garrett GTW3684JB is a solid choice if you’re looking to crank up the power and have some fun with your ride. It’s got the specs to back it up and the performance to match. Just make sure you’re ready for the installation and you’ll be set to enjoy the ride!
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Advanced Tuning Products, Inc. (ATP Turbo) is a company that is solely dedicated to turbocharging. Its main goal is to engineer and manufacture quality turbocharging components that deliver a real difference in power gains. Currently located in Hayward, California, ATP Turbo offers an extensive lineup of innovative turbo components, all of which are backed by years of experience and a solid international reputation. The brand’s current lineup includes a wide range of blow-off valves, injectors, adapters, and several other turbo components that are engineered to bring about a significant boost in power.
Dedication to Quality and ReliabilityWhile that act of turbocharging itself is not “new”, many of the parts ATP Turbo creates are born from “fresh” ideas that arise from applying the basic principles of process improvement and re-engineering to turbo systems. Following these philosophies has helped ATP Turbo design and re-design turbocharging components that are reliable, better functioning, and, oftentimes, more simplified than their stock counterparts. ATP products can be purchased as separate components or as a complete kit. For those taking on a larger tuning project, an ATP Turbo kit is certainly the better choice as it has everything you need to get the job done efficiently.
ATP Turbo’s processes rely on the latest equipment and tools to build only the best products in a timely fashion. All of its products are built using the latest high-precision equipment like 4-axis Haas CNC milling stations and lathes. With this, the company is able to switch from prototypes to high-speed production in very little time. What’s more, they are manufactured from high-quality materials to ensure superior durability for longevity and reliability.
ATP’s turbocharging components complement the best turbochargers offered by the aftermarket industry. Garrett Engine Boosting Systems is known for its unsurpassed performance and reliability. Garrett turbo units provide the solid foundation for ATP’s turbocharging applications.
Upgrade to ATP Turbo at Vivid RacingIf you are looking for the finest turbo equipment on the market, then you’ve come to the right place. ATP Turbo manufacturer top-of-the-line turbochargers and turbo components to improve upon the already impressive performance figures of vehicles like the Ford Focus ST, Ford Fiesta ST, Subaru WRX, Mitsubishi EVO, and Hyundai Genesis. ATP produces and tests all of its own products to ensure that each part offers the consumer optimal performance gains.
If you are ready to release the potential of your ride, call our parts specialist today at (480) 966-3040. We will get you equipped with ATP Turbo and make the purchase process a simple and pleasant one.