Northern Tuning is proud to announce we are now an official Calibrated Power Dealer! You can now purchase Stealth STR, 64, and 67 turbochargers — along with full custom tuning for these chargers — directly from us. Trusted performance, proven results.
There's nothing better than upgrading your parts instead of just replacing them. That's why the Stealth STR is the perfect upgrade for your 2017, 2018, or 2019 Chevy Silverado/ GMC Sierra 2500/3500 L5P Duramax. It combines the affordability of a stock turbo replacement with some of the best upgrades you can get in a drop-in L5P charger. Whether you’re looking for more power or simply a do-it-all kind of turbo with some added durability the STR delivers.
Proven to support up to 625 RWHP with stock emissions
Extra airflow to make 80-100rwhp over 'Tune only' L5P
Works great with box tuners, custom tuning, or without tuning
Lower average EGTs and better overall EGT control
Built to last with more durable components
Lighter rotating assembly than stock
Lightning fast spool-up and immediate throttle response
