High-Flow Big Boss Intake Manifold — Compatible with Cummins ISX15 Engines (2010 to 2013)

If you’re looking to improve airflow and performance on your Cummins ISX15 (2010–2013), the PDI Big Boss Intake Manifold is designed to deliver better air distribution, cooler intake temperatures, and noticeable power gains.

The Big Boss Intake Manifold is engineered to increase and balance airflow entering the engine, allowing each cylinder to receive a more consistent air supply. By opening up key areas within the manifold, PDI has increased airflow by up to 35% over the factory design.

Improved airflow helps lower intake air temperatures, which can lead to power gains of up to 20 horsepower while also improving engine efficiency. The result is stronger performance, improved drivability, and the potential for better fuel economy.

This intake manifold is designed as a direct replacement for the factory manifold, making installation straightforward while still utilizing factory mounting hardware.

Like all PDI Big Boss products, the manifold is designed to help your engine produce more horsepower, increase torque, and improve overall efficiency.

Available For

2010–2013 Cummins ISX15 Engines

Key Benefits

• Up to 35% increase in airflow over stock

• Lower intake air temperatures

• Power gains of up to 20 HP

• Improves airflow balance between cylinders

• Supports increased horsepower, torque, and efficiency

• Direct replacement design using factory hardware

Warranty

1 Year Unlimited Mileage Warranty

⚠️ ON SALE – Limited Availability
Sale items are final and will not be restocked once sold out.

At Redneck Diesel Performance, we carry parts that help your truck breathe better, run stronger, and stay reliable mile after mile. And if you’d rather have it done professionally, our shop can install it for you too.

For more information or help with your setup, call us at 972-921-4316.