TNT4R T6 Turbochargers
True North Turbos TNT492 92mm T6 103/92 Journal Bearing Turbo | 1755+HPFrom $2,499.13From $2,499.13
True North Turbos TNT476 76x113 96/88 LIMITED STREET (Limited 235) | 1640+HPFrom $2,245.13From $2,245.13
TNT4R T6 Turbochargers
The True North Turbos TNT4R T6 series is built on the 400 frame — the same frame standard as S400-series turbochargers — so every unit here is a direct bolt-on replacement for an S400-frame T6 turbo. Your manifold, 5.75" marmon downpipe flange, clamp, compressor discharge, and 12AN oil drain all carry over.
Built for 6- and 8-cylinder import, domestic, and diesel performance engines, the T6 flange and larger turbine housings support power from roughly 700HP up to 3000+HP in twin V8 applications. Every TNT4R turbo is designed, machined, assembled, and balanced in Canada by Black Sheep Industries.
Replacing a specific model? See the S400 replacement cross-reference for the S476 through S492 mapping.
Shop TNT4R T6 Turbos
- TNT476 76mm T6 Journal Bearing | 1110–1230HP — replaces S475/S476. The entry point into the T6 lineup.
- TNT480 80mm T6 Journal Bearing | 1345–1405HP — replaces S480. A strong step up in airflow capacity.
- TNT485 85mm T6 Journal Bearing | 1520+HP — replaces S483/S485. Built for serious high-horsepower street and race builds.
- TNT488 88mm T6 Journal Bearing | 1400–1520HP — replaces S488. Big airflow for high-power single-turbo builds.
- TNT492 92mm T6 103/92 Journal Bearing | 1755+HP — replaces S492. The largest single-frame T6 option in the lineup.
- TNT476 76x113 96/88 Limited Street (Limited 235) | 1640+HP — a size-limited option built for Limited/No Prep style racing classes.
- TNTME488 88mm 103x92 T6 — a larger turbine-frame configuration of the TNT488.
Choosing a TNT4R T6 Size
Smaller wheels in the T6 lineup (76–80mm) are a strong fit for high-horsepower street builds that still need reasonable spool. Larger wheels (85–92mm) are built for dedicated high-power and twin-turbo applications where top-end airflow is the priority over low-RPM response.
S400 Buying Guides
- S400 Replacement Cross-Reference: S467 to S488
- S400 Turbo Guide: Sizes, Specs, Flanges and Fitment
- What Size S400 Turbo Do I Need?
- S400 Turbo Flange Guide
- S400 Turbo Oil Drain Guide
- S400 Turbine Housing and A/R Guide
- S400 for Cummins · Duramax · Power Stroke
Frequently Asked Questions
Are TNT4R T6 turbos a direct replacement for an S400?
Yes. TNT4R T6 turbos are built on the 400 frame, so the manifold, 5.75" marmon downpipe flange, clamp, compressor discharge and 12AN oil drain from an existing S400-frame T6 installation all carry over.
What is the TNT4R T6 turbo series?
TNT4R T6 is True North Turbos' 400-frame T6 turbo lineup for 6- and 8-cylinder engines, supporting roughly 700HP up to 3000+HP in twin V8 applications.
Which TNT4R T6 size should I choose?
Smaller wheels (76–80mm) suit high-horsepower street builds that still want reasonable spool. Larger wheels (85–92mm) suit dedicated high-power and twin-turbo applications.
Are TNT4R T6 turbos built in Canada?
Yes. Every TNT4R turbo is designed, machined, assembled, and balanced in Canada by Black Sheep Industries.
Power ratings are quoted in crank horsepower (HP). Figures previously published in wheel horsepower (WHP) have been restated using our in-house tested conversion — the hardware and its capability are unchanged.
BorgWarner and S400 are trademarks of BorgWarner Inc. Black Sheep Industries Inc. and True North Turbos are not affiliated with or endorsed by BorgWarner Inc. Model designations are used for identification and fitment reference only.
True North Turbos TNT4R T6 Turbochargers
Built with cutting-edge technology and precision engineering, the TNT4R Series turbochargers deliver unmatched reliability and blistering power for both 6-cylinder and 8-cylinder engines. Whether you're crafting a high-performance street machine, an all-out drag car, or a diesel beast, the TNT4R Series is designed to push your engine beyond limits and exceed every expectation.
Capable of generating anywhere from 700 horsepower to an astonishing 3,000+ horsepower in twin 8-cylinder applications, these turbochargers are engineered for explosive performance. From single-turbo setups for street dominance to twin-turbo configurations for track superiority, the TNT4R Series delivers relentless power and precision. Designed to thrive under extreme conditions, these turbos offer consistent, high-output performance—making them the go-to choice for enthusiasts and professionals alike.
But raw power isn’t the only thing the TNT4R Series offers—it’s also incredibly versatile. Designed to adapt seamlessly to a wide range of applications, these turbos suit high-revving imports, torque-heavy diesel trucks, and big-power domestic engines. Diesel owners will love the TNT4R’s ability to boost towing strength, off-road capability, and race-ready performance, making it a favorite among Cummins, Duramax, and Powerstroke enthusiasts.
Upgrading to the TNT4R Series turbochargers unleashes hidden potential, delivering faster acceleration, sharper throttle response, and a wider power band. From track monsters to street legends, these turbos are built to dominate, keeping you ahead of the competition with industry-leading performance and durability.
Don’t settle for ordinary—experience extraordinary. The TNT4R Turbocharger Series is your key to unmatched horsepower, unrelenting performance, and unbeatable reliability. Whether you're conquering the drag strip, tearing up off-road trails, or ruling the streets, the TNT4R Series is built to redefine power and leave the competition in the dust. Shop now and unleash the beast within!