MDC Diesel HE451VE Cummins ISX T6 Turbo Conversion Adapter Flange X15 ISX

Upgrade your Cummins ISX platform with our HE451VE to T6 Turbo Conversion Adapter Flange, engineered for high-performance builds and reliable long-term durability. This adapter allows you to replace the factory HE451VE VGT turbo with any standard T6-frame turbocharger, giving you more power potential, easier servicing, and greater tuning flexibility.

Key Features

• Direct Conversion from HE451VE to T6: Perfect fitment for Cummins ISX engines looking to switch from the stock VGT to a fixed-geometry or performance T6 turbo.
• High-Strength CNC-Machined Steel: Built to handle extreme exhaust temperatures, high boost pressure, and long-term diesel performance demands.
• Improved Performance & Reliability: Ditch the electronic VGT system and enjoy consistent spool, reduced failure points, and simplified tuning.
• Universal T6 Turbo Compatibility: Works with popular performance turbos—ideal for high-horsepower builds, towing applications, and competition setups. S400 T6 turbos 
• Bolt-On Installation: Designed for a smooth, hassle-free fit with precise alignment and durable hardware compatibility.

Why Choose This Conversion?

The factory HE451VE is known for variable nozzle issues, actuator failures, and expensive replacements. Converting to a T6 turbo gives ISX owners more reliable performance, greater boost control, and access to a wide range of aftermarket turbo options.

Whether you’re building a daily workhorse, a high-power performance rig, or a fleet reliability upgrade, this adapter flange is the foundation you need for a dependable T6 swap.

Perfect For

• Cummins ISX X15 engines
• HE451VE VGT turbo replacements
• T6 turbo upgrades
• Performance diesel builds
• Towing, hauling, or heavy-duty applications

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HE451VE Conversion flange to install a T6 Flange turbo on a stock Cummins ISX manifold that originally had an HE451VE Turbo.

Many owners are plagued by VGT problems with this Cummins ISX factory Holset turbo.  If you are looking to switch to a NON VGT s400 T6 flange turbo, this is the adapter for you!  

For CM2250, CM2350, X15 ISX

Fits Turbos:

S410, S410SX, S430SX, S500, S400, S475, S478

171702, 171710, 14969880004 14969880005, and more!

Includes:

-Billet Conversion Adapter

-Gaskets

-Studs

-Nuts