If you're diving into the world of turbocharging, the Garrett GTW3476JB (or GTW5857JB for those in the know) is a solid choice that packs a punch. With a 58mm journal bearing turbo, this beast has the potential to push out around 700 horsepower, making it a great option for serious builds. The .63 A/R ratio helps with quick spool-up, so you can get into the power band without waiting around.
One thing I really appreciate about the GTW series is how it offers fantastic performance without breaking the bank. This isn’t just another generic turbo; it’s Garrett’s answer to the popular 5858 size, and trust me, it delivers. The T3 undivided inlet and narrow T31 4-bolt outlet turbine housing mean you’re set for some serious airflow.
Let’s get into some of the specs that matter:
Now, a heads-up: this turbo isn’t a direct drop-in replacement for the smaller Garrett GT or GTX series. The GTW series is a bit bulkier, so make sure you’ve got the space for it. Also, the oil fittings are different, so don’t try to mix and match unless you want a headache down the line.
For the oil fittings and components, here’s what you’ll need to keep things running smoothly:
And if you’re looking at turbine housing components, here’s what you’ll need:
In short, if you’re ready to step up your turbo game, the Garrett GTW3476JB is worth considering. It’s got the specs, the build quality, and the performance to back it up. Just make sure you’ve got the right setup to make the most of it!
⚠ 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.