Industrial Injection 227456 Cummins 3rd Gen 5.9L Quick Spool Compound Turbo Kit

The Industrial Injection 227456 Quick Spool Compound Turbo Kit is a complete, updated compound turbo system engineered for the 3rd Gen Cummins 5.9L diesel. Redesigned from the ground up for improved fitment, flow characteristics, and ease of installation, this kit delivers serious power potential while keeping exhaust gas temperatures (EGTs) in check — without sacrificing everyday driveability.

Turbo Configuration:

• Manifold (primary) turbo: Industrial Injection PhatShaft 62/65/12
• Atmosphere (secondary) turbo: BorgWarner S400SX4 75/96/1.32
• Compound (twin-turbo) setup for rapid spool-up and maximum airflow

Kit Features:

• Complete installation kit — includes everything needed to install
• Ceramic-coated and heat-wrapped hot pipe for thermal management
• Powder-coated high gloss black cold pipes and compressor housings
• High-flow 5" intake with S&B oiled filter
• New A/C line and dipstick tube — no bending or modification required
• Firewall heat shield with Industrial Injection logo
• 360-degree thrust bearing and adjustable boost elbow for precise boost control
• Supports up to 850 HP with fueling upgrades

Compatibility Notes:

• Designed to work with OEM and BD (1045987) 3rd Gen 5.9 exhaust manifolds only
• Not compatible with Steed Speed, AFE, or Dorman exhaust manifolds
• May not work with aftermarket coolant bypass kits
• A two-piece exhaust manifold upgrade is recommended for optimal performance

The 227456 is the complete kit including both turbochargers. A hardware/piping-only version is also available separately (MPN: 227456K). This product is not CARB compliant and is not for sale in California.