PDI Big Boss Intake Manifold – Cummins ISX15 / X15 CM2350 (2013.5–2024)

PDI Big Boss Intake Manifold – Cummins ISX15 / X15 CM2350

The PDI Big Boss Intake Manifold is a premium performance upgrade engineered for 2013.5–2024 Cummins ISX15 and X15 engines. Designed to improve and balance airflow throughout the engine, this direct-replacement intake manifold increases airflow by up to 35%, lowers intake air temperatures, and can deliver gains of up to 20 additional horsepower.

Unlike restrictive factory manifolds, the PDI Big Boss Intake Manifold features an optimized internal design that distributes air more evenly across all cylinders. The result is improved combustion efficiency, enhanced throttle response, lower intake temperatures, and increased overall engine performance.

Key Features

• Direct replacement for factory Cummins intake manifold
• Designed for 2013.5–2024 Cummins ISX15 and X15 engines
• Increases airflow by up to 35%
• Helps reduce intake air temperatures
• Can deliver gains of up to 20 horsepower
• Improves airflow balance across cylinders
• Utilizes factory mounting hardware
• Available in Red Ceramic or Chrome finishes
• Made for owner-operators and performance-minded fleets

Specifications

• Brand: PDI
• Series: Big Boss™
• SKU: 102000064481
• Application: Cummins ISX15 / X15 CM2350
• Engine Years: 2013.5–2024
• Product Type: Performance Intake Manifold
• Warranty: 1 Year Unlimited Mileage Warranty
• Installation: Direct Bolt-On Replacement

Applications

Compatible with Peterbilt, Kenworth, Freightliner, Western Star, Volvo, International, and other Class 8 truck applications equipped with Cummins ISX15 and X15 CM2350 engines from 2013.5 through 2024.

Performance Benefits

• Up to 35% more airflow than stock
• Improved cylinder-to-cylinder airflow balance
• Reduced intake air temperatures
• Enhanced throttle response
• Improved combustion efficiency
• Potential horsepower gains up to 20 HP
• Supports improved fuel economy and drivability

Cross Reference

This PDI Big Boss Intake Manifold replaces OEM intake manifold assemblies including:

• Cummins: 5440760
• Cummins: 3688355
• PDI: 102000064481

Why Upgrade Your Intake Manifold?

Factory intake manifolds can create airflow restrictions and uneven air distribution between cylinders. The PDI Big Boss Intake Manifold is engineered to improve airflow efficiency, helping your engine breathe easier under load while improving overall performance and efficiency.

Built for Performance and Efficiency

PDI designed the Big Boss Intake Manifold to help owner-operators and fleets get more out of their Cummins engine. Improved airflow and lower intake temperatures can help support better fuel economy, stronger pulling power, and enhanced engine responsiveness. :contentReference[oaicite:0]{index=0} mileage warranty.