This High Flow Big Boss Intake Manifold is designed for 2013.5–2024 Cummins ISX15 and X15 engines. The Big Boss intake manifold increases and balances the air going into the engine, with airflow increasing up to 35% leading to lower air intake temperatures and power gains of up to 20 hp. Built for demanding commercial diesel applications, this direct-fit manifold improves intake efficiency and supports reliable engine performance under heavy-duty load.

Fitment

• 2013.5–2024 Cummins ISX15 & X15 Engines

Product Details

• Airflow Increase: Up to 35% more airflow compared to stock intake manifold
• Power Gain: Up to 20 hp
• Intake Air Temperature: Cooler air intake temperatures
• Installation Type: Direct replacement manifold utilizing factory hardware
• Construction: Opens up the manifold design by eliminating the factory "necked down design" and replacing it with an open design
• Weight: 41.0 lbs
• Package Dimensions: W36.0" x H13.0" x L10.0"
• Origin: Made in the USA

Installation

This direct replacement intake manifold is simple to install and utilizes factory hardware. No modifications to existing engine components are required for installation.

Check local emissions regulations before purchase. Professional installation is recommended.

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