When you want more horsepower, better towing performance, or lower exhaust gas temperatures (EGTs), the stock VGT just isn't cutting it. 

That’s exactly why we engineered the Stainless Diesel Boss 63/67 VGT 5Blade Mafia™ Drop-In Turbocharger. 

Here is a breakdown of why customers, just like you, continue to choose this turbocharger for their Cummins. 

1. Drop-In Convenience 

Upgrading your turbo shouldn't require custom fabrication, specialized brackets, or headaches in the garage. The Boss 63/67 VGT is designed as a direct bolt-on upgrade for 2013–2018 6.7L Cummins engines.

• Pre-Calibrated VGT Actuator Included: Eliminates the guesswork during installation and arrives pre-calibrated.

• Full Installation Kit: Each unit comes complete with an installation gasket set (and optional braided stainless -4 oil feed line) so you can finish the job in one shot.

• Retains OEM Exhaust Brake: Crucial for anyone who hauls heavy loads, keeping your engine braking functional and safe when descending steep grades.

2. Unmatched Airflow

The heart of this unit is our custom 63mm 5Blade Mafia™ billet compressor wheel, paired with a massive 67mm high-flow turbine wheel.

Unlike generic factory wheels, our 5-blade billet design draws air more efficiently, providing faster spool-up low in the RPM band while forcing significantly more air volume into the engine as boost builds.

High-Flow Turbine Options:

• 10-Blade Turbine (Standard): Excellent balance of high-flow exhaust discharge, lower backpressure, and smooth power delivery across the powerband.

• 9-Blade Turbine (Optional Upgrade): Offers maximum exhaust flow, highest top-end power potential, and that signature, aggressive turbo whistle diesel enthusiasts love.

3. Real Performance Capabilities 

Whether you’re building a street truck, a tow rig, or competing, power potential DOES matter.

Supported by proper fueling and supporting mods, the Boss 63/67 VGT can support up to ~700 horsepower, all while keeping EGTs low & under control.

Key Performance Benefits:

• Lower EGTs: Massive reduction in exhaust gas temperatures under heavy load or extended pulls.

• Stock Like Drivability: Lightning fast spool means no waiting around for power when merging, passing, or pulling out from a stop.

• Durability First: Built to eliminate the weak points found in standard OEM turbochargers.

4. Backed by the Stainless Diesel Warranty

We stand behind our craftsmanship. Every Boss 63/67 VGT Turbocharger comes backed by a 2-Year Unlimited Mile Warranty, giving you total peace of mind.

Technical Specifications Summary

Ready to Upgrade Your Cummins?

If you are ready to fix your OEM turbo issues, lower your EGTs, and unlock real power without giving up stock-like drivability, the Boss 63/67 VGT 5Blade Mafia™ is built for you.

Order Your Boss 63/67 VGT Turbocharger Here.