GP Sorensen® is fully committed to the turbo market. Our current line has applications for passenger cars, light trucks, and medium duty trucks, which gives you the coverage you need. Scroll down to learn more about the turbo market and our coverage and engineering. 

The Upward Trend in Turbo Coverage

turbo market

A Growing

Vehicle manufacturers are adding turbos at a double-digit rate. Over the next 5 years, the turbo market is expected to grow to more than 8 million turbocharged vehicles.

Why Turbo?

While Diesel passenger cars are the main consumers of turbos, gasoline-powered vehicles utilize them as well. Why turbo? Simple. Downsized engines are needed to meet new fuel and emissions standards. Turbos improve power and economy up to 40%.

Full-Line Coverage

Our extensive research has helped us determine the numbers you’ll need to compete in this market. Our coverage for Chevrolet/GMC,Ford/International Powerstroke, Dodge Sprinter, Dodge/Cummins, Audi/VW and Saab will be expanded to include new applications for Jeep, Chevrolet Cruze and Cruze Diesel, Chevrolet/GMC Duramax, Ford/International, Dodge/Cummins, Ford, Volvo, Subaru, Mazda, BMW, Mercedes, Mini, Fiat, and Porsche. Now that’s what we call full line coverage!

100% New Turbochargers

GP Sorensen's® line of 100% new turbos means you can install with complete confidence. Each direct-fit replacement part ensures ease of installation, and we have parts for both gasoline and diesel applications. 


Rotating journal and thrust bearings 100% tested to meet OE performance

Turbo vacuum-operated actuator diaphragm constructed with high-grade rubber material to resist heat fatigue

Includes complete gasket kit for ease of installation

Quality-Remanufactured Turbochargers

Ford dealer-remanufactured turbos do not include an electro hydraulic control valve. Instead, the valve is sold separately as an additional part. In addition to new units, GP Sorensen offers remanufactured units that include the electro hydraulic control valve, eliminating the need to purchase separate parts.

reman turbocharger

Quality-remanufactured with components from our meticulously culled core inventory to ensure maximum performance

Comes with complete hardware kit for ease of installation

Includes new OEM electro hydraulic control valve attached to unit, eliminating need to buy separate part

Signs of a Damaged Turbo

failed turbocharger

If you hear whistling noises coming from the turbo, it’s likely due to an air/gas leakage caused by pre-turbine exhaust gas or air/boost leaks. Your first course of action should be checking all of the joints. If the noise continues, check the clearances and wheels for housing contact.

If the turbo rotor assembly has seized up or is difficult to rotate, the problem is likely tied to the degradation of the lubricating oil. When the oil degrades, it can lead to carbon buildup in the bearing housing interior. The carbon buildup will ultimately restrict rotation. Two other issues that can cause the rotor to seize up include insufficient or intermittent drop-in oil pressure and dirt in the lubricating oil. Another important detail to keep in mind is that a turbo has specific axial and radial rotor clearances. Sometimes, the clearances can be misdiagnosed as worn bearings. In reality, clearances that are out of specification may be associated with a lubricating oil issue. Check for insufficient oil, dirt ingress, and oil contamination with coolant.

To determine if the turbo has been damaged by foreign material, inspect the turbine wheel or impeller. You will clearly see any foreign material that has entered through the turbine or compressor housings. If the blades are damaged, the turbo is already destroyed. Look for metal that has come off the turbo in the intake tubes. Metal particles in this area may indicate a damaged engine.

To learn more about turbo diagnosis, read our Turbocharger Diagnosis Tips article. 

Turbo Boost Solenoid

The turbo boost solenoid (a.k.a. wastegate solenoid) monitors the amount of boost generated in a turbocharged motor. Faulty turbo solenoids won’t properly monitor the amount of boost generated in a turbocharged motor, which will decrease the life of the turbo and motor. Our Turbo Boost Solenoid is a direct replacement that regulates the amount of boost being generated from stock or upgraded units.

turbo boost solenoid

Direct-fit OE replacement for ease of installation

Designed to restore proper wastegate function to maximize turbocharger boost pressure and engine performance

Includes mounting bracket for easy, direct-fit installation