The 24V Cummins stock exhaust manifolds are notorious for thermal cracking, restricted exhaust flow, slow turbo spool, and uneven exhaust gas distribution across cylinders.

At Stainless Diesel, we engineered our T-4 24-Valve Exhaust Manifold (SKU: SD2G24VT4) to solve these exact failure points while unlocking maximum performance and turbo efficiency.

Why Upgrade to a Stainless Diesel T-4 Exhaust Manifold?

1. High Flow Pulse Flow Design

Our manifolds are designed with optimized runner geometry to maximize exhaust gas velocity and scavenge pulses effectively. By smoothly directing high velocity exhaust pulses directly into a T-4 turbo flange, turbo lag is dramatically reduced, giving you faster response and smoother power delivery across the entire RPM range.

2. Premium Construction 

Factory cast manifolds degrade over time due to extreme heat cycling. Standard cast iron turns brittle, warps at the head surface, and eventually cracks.

• Heat & Corrosion Resistance: Engineered to handle extreme Exhaust Gas Temperatures (EGTs) without cracking or shrinking.

• Flange Stability: Heavy duty, precision machined flanges resist warping under severe load and sled-pulling or towing conditions.

3. T-4 Flange Versatility

Upgrading to a T-4 opens up a world of aftermarket turbocharger choices (S300, S400 series, or custom high-flow turbos). If you're building a high performance Cummins or a competition sled puller, this manifold provides the solid foundation needed for higher boost levels.

Key Features & Product Highlights

• Direct Fitment: Designed for 24-valve Cummins 

• T-4 Turbo Mount Flange: Fits industry-standard T-4 turbo housings.

• Pre-Drilled & Tapped NPT Ports: Conveniently placed ports make installing pyrometer EGT probes or drive pressure sensors clean and hassle-free.

• Thermal Efficiency: Retains exhaust gas energy to drive the turbine wheel harder while keeping under hood temperatures manageable.

• Built to Outlast Your Truck: Engineered, cast, and finished with Stainless Diesel’s strict quality standards.

Who Is This Manifold For?

• Performance Builds: Enthusiasts upgrading to S300/S400 T-4 turbochargers needing maximum exhaust flow without restrictions.

• Sled Pullers: Drivers pushing high boost and extreme heat who need a manifold that won't crack under stress.

Upgrade Your Cummins Performance Today

Don't let a cracked stock manifold or sluggish turbo lag hold your 24-valve Cummins back. The Stainless Diesel T-4 24V Exhaust Manifold delivers the durability, airflow, and spool characteristics your build deserves.

Click here to learn more or grab yours today!