Momentum Worx S475 75MM Billet Turbocharger | 11-Blade | Wastegated 1.32 A/R T6

Quick spool. Big boost. A little more control when things get rowdy.

Sometimes the strangest turbocharger combinations are EXACTLY what somebody needs.

Meet the Momentum Worx Wastegated S475 75MM Billet Turbocharger, built around our extremely popular 11-blade billet S475 platform, but with one important twist.

An internally wastegated 1.32 A/R divided T6 turbine housing.

We've seen our traditional 11-blade S475 turbochargers put to work on Detroit Series 60 engines, Cummins ISX applications, and plenty of other performance diesel builds.

Normally, when we're looking to PARTY, we gravitate toward non-wastegated turbochargers.

But there's a time and a place for a wastegate.

And for the right customer, this combination makes a whole lot of sense.

11-Blade Billet Compressor – Built for Street Response

The foundation of this turbocharger is our proven 75MM / 100MM 11-blade billet compressor wheel.

Compared with our more top-end-oriented 7+7 billet S475, the 11-blade configuration is intended to favor quicker low-end boost response and improved street drivability.

That means a turbocharger designed to come online sooner and deliver a more responsive driving experience.

Paired with the 96/88MM turbine wheel and 1.32 A/R exhaust housing, this setup offers a compelling balance of performance and drivability for properly matched commercial diesel applications.

But the real story here is what happens once the boost starts climbing.

Why Put a Wastegate on an S475?

We can think of three really good reasons.

1. You Want Quick Spool Without Pushing the Turbo Too Hard Up Top

Maybe your engine is making just a little more power than a traditional non-wastegated S475 is comfortable handling.

You like the low-end response of the 1.32 A/R turbine housing, but as engine RPM and exhaust energy increase, turbocharger speed can become a concern.

That's where the wastegate comes in.

By allowing some exhaust gas to bypass the turbine, the internal wastegate can help manage turbine drive energy and limit boost buildup at higher engine loads.

The goal is to retain the responsive characteristics of the 1.32 A/R housing while reducing the risk of excessive turbocharger speed at the top end.

It's not a guarantee against overspeed, but it's another tool for managing the turbocharger's operating conditions.

2. You Want More Predictable Boost for Your Truck or Driver

Not everybody wants to see how much boost they can squeeze out of a turbocharger.

Some customers simply want a strong-running truck with more predictable boost behavior.

Maybe you're not the only person driving the truck. Maybe you've got an employee behind the wheel. Or maybe you'd just prefer a little extra boost-management capability.

The wastegate provides a mechanical means of regulating turbine drive energy as boost pressure increases.

More control. Less guesswork. A little extra peace of mind.

Just remember that a wastegate is not a substitute for proper fueling, tuning, or turbocharger selection.

3. You Want to Dial In Your Boost With a Controller

Now we're talking.

For customers looking to fine-tune their setup, the wastegated S475 can be used with an appropriately configured manual boost controller.

Depending on the controller and installation, this can allow adjustment of boost onset and the pressure at which the wastegate begins opening.

Want to experiment with how the turbocharger builds boost?

This setup gives you another adjustment to work with.

But careful here, boys. This is also a great way to blow your shit up if you don't know what you're doing.

Increasing boost targets or delaying wastegate opening can result in excessive turbocharger speed, cylinder pressure, and engine stress.

And there's another important detail.

Enough exhaust manifold drive pressure can physically push the wastegate valve open, even when the actuator is being commanded to stay closed.

So don't assume that simply cranking up a boost controller means the wastegate will stay shut indefinitely.

How Much Boost Will the Wastegate Allow?

With the supplied actuator configuration, the wastegate has the following approximate operating characteristics:

IMPORTANT: 38 PSI IS NOT A HARD BOOST LIMIT.

Even with the internal wastegate fully open, enough exhaust gas may continue flowing through the turbine to produce boost pressure above 38 PSI.

Actual boost levels depend on engine displacement, exhaust flow, fueling, altitude, exhaust manifold pressure, and other operating conditions.

A wastegate helps regulate boost. It does not guarantee a fixed maximum boost pressure or prevent every possible turbocharger failure.

Upgraded 360-Degree Thrust Bearing

Just like our other upgraded Momentum Worx S475 turbochargers, this unit features a 360-degree thrust bearing.

The thrust bearing supports axial loads generated as the turbocharger operates under changing boost and exhaust pressure conditions.

Compared with conventional 270-degree designs, a properly engineered 360-degree thrust bearing can provide greater load-bearing surface area and improved axial load distribution.

It's one more upgrade we include to help build a robust, performance-oriented turbocharger.

Assembled in the USA

Every Momentum Worx Wastegated S475 is assembled in the USA.

We pay attention to the details that matter, from component selection to clean assembly and machine work.

The S400 platform has earned its reputation over decades of diesel performance use, and we've taken that foundation and added the features customers have been asking for.

Billet compressor. Upgraded thrust bearing. Internally wastegated housing.

All in one versatile package.

Momentum Worx Wastegated S475 Specifications

Who Is This Turbo For?

The Momentum Worx Wastegated S475 is an excellent candidate for:

• Detroit Diesel Series 60 12.7L & 14L: Performance builds seeking responsive boost characteristics with additional boost-management capability.
• Cummins ISX / ISX15 Non-VGT: Custom fixed-geometry turbocharger conversions where boost control is desirable.
• Street-Driven Commercial Diesel Trucks: Customers who prioritize usable power and controlled boost response.
• Custom Performance Applications: Builds requiring a divided T6, internally wastegated S475 configuration.

Fitment depends on engine configuration, manifold, piping, fueling, tuning, and supporting modifications.

Big Power Is Fun. Controlling It Is Pretty Smart, Too.

The traditional non-wastegated S475 has earned its place in the diesel performance world.

But sometimes you want the response of an 11-blade billet S475 with the additional flexibility of an internal wastegate.

75MM billet compressor. 11-blade design. 360-degree thrust bearing. 1.32 A/R divided T6 wastegated housing.

It's an unusual combination.

And for the right application?

It's EXACTLY what the doctor ordered.

The Momentum Worx Wastegated S475.

Make boost. Keep it under control. Have fun.