Industrial Injection

PhatShaft turbos. Industrial Injection's own performance turbo line for the Cummins. PhatShaft turbos use larger compressor wheels than stock, dual grooved bearings, and an adjustable boost elbow. The Super PhatShaft step adds an extended-tip compressor wheel in 62mm, 64mm, or 66mm sizes paired with a 71mm turbine exducer, aimed at trucks with several fueling upgrades that tow heavy or see the track. Industrial Injection Turbochargers

Single turbo kits. Kits built around BorgWarner S300 SX-E and S400 frame turbos (such as the S475), along with II's named kits like the Viper and Thunder. Kits include the turbo and the hardware to mount it on a specific engine. Industrial Injection Turbo Kits

Remanufactured stock replacement turbos. Rebuilt factory-style turbos for stock trucks, such as the HY35W for 2003 to 2004 5.9L Cummins.

Install kits, blankets, and components. Turbo install kits, turbo blankets, turbine housings, wastegate actuators, and upgrade components for II setups.

How to read Industrial Injection S300 kit names

Many II kits list three numbers, such as "S300 SX-E 62/74 with .91 A/R." Here's what each means.

• The first number is the compressor wheel size in millimeters. A larger compressor wheel moves more air but typically needs more exhaust energy to spool.
• The second number is the turbine wheel size in millimeters. A larger turbine wheel typically lowers drive pressure and EGT at high power but spools a little later.
• The A/R is the turbine housing size. A smaller A/R (such as 0.91) typically spools sooner and suits towing. A larger A/R (such as 1.0) typically flows more at high rpm.

The combination that works best depends on your injectors, fuel pump, and whether you tow, drive daily, or race.

Stock replacement, PhatShaft, or a single turbo kit?

Choose a reman stock replacement if your truck is stock or close to it and you want factory drivability.

Choose a PhatShaft if your truck has injector and tuning upgrades and you want quicker spool, lower EGTs, and more airflow while keeping a stock-location install.

Choose an S300 or S400 single turbo kit if you've upgraded fueling significantly and need more airflow than a stock-frame turbo can supply. Larger S400 kits suit high-power, race, and pulling trucks.

• Choose a reman stock replacement if your truck is stock or close to it and you want factory drivability.
• Choose a PhatShaft if your truck has injector and tuning upgrades and you want quicker spool, lower EGTs, and more airflow while keeping a stock-location install.
• Choose an S300 or S400 single turbo kit if you've upgraded fueling significantly and need more airflow than a stock-frame turbo can supply. Larger S400 kits suit high-power, race, and pulling trucks.

How do I choose the right Industrial Injection turbo?

• Match the exact truck. II turbos and kits are built for specific engines and years. On the 5.9L Cummins, the 12-valve, 24-valve, and common rail engines use different parts, and even the 2003 to 2004 and 2004.5 to 2007 common rail trucks use different stock turbos.
• Match the turbo to your fueling. A turbo too large for your injectors typically spools slowly and smokes. A turbo too small typically drives EGT and drive pressure up. II recommends sizing the turbo to the fueling you have.
• Plan for the wastegate sensor on 2004.5 to 2007 trucks. These trucks may need a wastegate sensor fooler with a PhatShaft turbo to avoid a fault code.
• Plan for tuning. Larger turbos and single turbo kits typically need custom tuning and supporting fuel system upgrades.
• Check the rest of the drivetrain. More power puts more load on the transmission, clutch, and cooling system.

Installation notes

• Prime the turbo. Pre-lube the CHRA and crank with fuel disabled to build oil pressure before first start.
• Clean or replace the oil feed line. A restricted feed line is a common cause of early bearing failure.
• Flush the intercooler and piping to remove oil and debris, especially if the old turbo failed.
• Use new gaskets and hardware and torque all fasteners to spec.
• Set boost control. Adjust the boost elbow or wastegate as needed, and check VGT actuator calibration on variable geometry units.
• Watch the gauges. Monitor boost, EGT, and drive pressure on the first drives, especially under load.

Common problems Industrial Injection parts address

A worn factory turbo on a high-mileage Cummins, with shaft play, oil leaks, or low boost.

High EGTs and slow spool on trucks with upgraded injectors running the stock turbo.

Not enough airflow for high-power towing, pulling, or racing builds.