The T-4 Stainless Diesel Cummins Exhaust Manifold is designed for high-performance applications, offering superior flow, enhanced spool-up, and improved horsepower. Ideal for 24v sled pullers, this exhaust manifold features a durable stainless steel construction with precision-engineered ports.

• Drilled and Tapped Ports: Includes 2 ports for EGT & Drive, providing easy monitoring and adjustments.
• Shell Molding Casting Technology: Ensures a super smooth finish inside and out, enhancing airflow and performance.
• Thick Wall Casting: Retains heat effectively, improving efficiency and performance.
• 1.650-Inch Inside Runner Sizing: Maintains consistent high flow to the center outlet, supporting large turbos.
• 3/4-Inch Thick Center Section: Allows for custom porting to meet specific performance requirements.
• Improved Spool-Up: Enhances turbo spool-up by several hundred RPMs, making large turbos more driveable.
• Enhanced Horsepower and Powerband: Boosts horsepower and widens the powerband, delivering a more responsive engine.
• Superior Fit & Finish: Provides excellent fitment and finish, ensuring a professional installation.

The T-4 Stainless Diesel Cummins Exhaust Manifold is specifically designed for 24v sled pullers and high-performance enthusiasts. Manufactured using advanced shell molding casting technology, this manifold offers a smooth finish both inside and out, which greatly improves airflow compared to traditional casting methods. This technology surpasses the old, rough 60-grit sandpaper-like casting found in other exhaust manifolds.

With a 3/4-inch thick center section, this manifold allows for custom porting, giving you the flexibility to tailor it to your specific performance needs. The thick wall casting helps retain heat within the manifold, contributing to improved efficiency and maintaining optimal exhaust temperatures.

The 1.650-inch inside runner sizing is maintained consistently to the center outlet, supporting high flow and enhancing the performance of large turbos. This design results in faster turbo spool-up, improving response by several hundred RPMs. The manifold also increases horsepower, broadens the powerband, and, when used with similar modifications, can enhance fuel economy.

The exhaust manifold features large 1.65-inch ports that run the full length to the collector foot, ensuring superior flow compared to competitors. This design not only improves performance but also ensures a perfect fit and finish for your Cummins engine.