Which trucks does the GTP38R PowerMax Turbo fit?

Garrett lists it for the 1999.5 to 2003 Ford 7.3L Power Stroke in the F-250, F-350 and Excursion. Garrett does not list earlier 7.3L model years for this part number, so check the build date of the truck before ordering.

How much power will the GTP38R support?

Garrett lists the GTP38R PowerMax Turbo at 590 horsepower, with a maximum recommended boost level of 40 psi. A diesel only makes that kind of power with matching injectors and calibration, so the turbocharger sets the ceiling while fueling and tuning decide the result.

Will it lower my exhaust gas temperatures?

Garrett states that the 1.00 A/R turbine housing reduces back pressure and can bring exhaust gas temperature down by up to 200F, about 111 degrees Celsius. That headroom is most useful when towing heavy or running larger injectors, where the stock turbocharger runs hot.

What is different about the bearing system?

The GTP38R uses a ball bearing cartridge in place of a journal bearing system. Garrett states that eliminating the conventional thrust bearing removes a cause of failure at elevated boost, and that the ball bearing gives better response, efficiency and durability.

Is the GTP38R a complete turbocharger?

Yes. Garrett sells part 739619-5004S as a complete turbo upgrade with the 88mm compressor wheel and the 1.00 A/R turbine housing. Garrett does not itemise hardware, gaskets or oil lines on its page, so check with us which installation parts your truck needs.

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Description

Garrett GTP38R PowerMax Turbo for 1999.5-2003 Ford 7.3L Power Stroke

Garrett’s GTP38R PowerMax Turbo is a complete replacement turbocharger for the 1999.5 to 2003 Ford 7.3L Power Stroke in the F-250, F-350 and Excursion. It uses a ball bearing cartridge and an 88mm GT compressor wheel, which Garrett says flows 33 percent more than the stock 80mm wheel, with a 1.00 A/R turbine housing. Garrett lists the kit at 590 horsepower and a maximum recommended boost of 40 psi. It suits a 7.3L that tows hard or runs larger injectors and needs more air and lower exhaust temperatures; on a stock truck it is more turbocharger than the fueling can use.

Ball Bearing Design

Garrett states that the ball bearing cartridge gives better response, efficiency and durability, and that eliminating the conventional thrust bearing removes a common failure point at elevated boost levels. The 1.00 A/R turbine housing reduces exhaust back pressure, and Garrett quotes up to 200F (111C) lower exhaust gas temperature.

Features

Ball bearing cartridge with no conventional thrust bearing
88mm GT compressor wheel, 33 percent more flow than the stock 80mm wheel per Garrett
1.00 A/R turbine housing for lower back pressure and exhaust temperature

Specifications

Compressor inducer and exducer: 66mm and 88mm
Compressor trim: 56
Compressor A/R: 1.00
Turbine inducer and exducer: 76mm and 68mm
Turbine trim and A/R: 79 and 1.00
Maximum recommended boost: 40 psi

Applications

Garrett lists the GTP38R PowerMax Turbo for these 7.3L Power Stroke vehicles:

Ford Excursion: 2000-2003 | 7.3L Power Stroke
Ford F-250: 1999.5-2003 | 7.3L Power Stroke
Ford F-350: 1999.5-2003 | 7.3L Power Stroke

Notes

Garrett states the maximum recommended boost is 40 psi
Garrett states that results depend heavily on the vehicle modifications and tuning
Garrett does not itemise installation hardware or oil lines for this kit; confirm what your truck needs with Bulletproof Automotive before ordering
Other Garrett Power Stroke upgrades are listed separately

Frequently Asked Questions

Which trucks does the GTP38R PowerMax Turbo fit? Garrett lists it for the 1999.5 to 2003 Ford 7.3L Power Stroke in the F-250, F-350 and Excursion. Garrett does not list earlier 7.3L model years for this part number, so check the build date of the truck before ordering.
How much power will the GTP38R support? Garrett lists the GTP38R PowerMax Turbo at 590 horsepower, with a maximum recommended boost level of 40 psi. A diesel only makes that kind of power with matching injectors and calibration, so the turbocharger sets the ceiling while fueling and tuning decide the result.
Will it lower my exhaust gas temperatures? Garrett states that the 1.00 A/R turbine housing reduces back pressure and can bring exhaust gas temperature down by up to 200F, about 111 degrees Celsius. That headroom is most useful when towing heavy or running larger injectors, where the stock turbocharger runs hot.
What is different about the bearing system? The GTP38R uses a ball bearing cartridge in place of a journal bearing system. Garrett states that eliminating the conventional thrust bearing removes a cause of failure at elevated boost, and that the ball bearing gives better response, efficiency and durability.
Is the GTP38R a complete turbocharger? Yes. Garrett sells part 739619-5004S as a complete turbo upgrade with the 88mm compressor wheel and the 1.00 A/R turbine housing. Garrett does not itemise hardware, gaskets or oil lines on its page, so check with us which installation parts your truck needs.

About Garrett

Garrett Motion has turbocharged engines since 1955, when its T15 was matched to the Caterpillar D9 crawler, and in 1962 a Garrett turbocharger went into the Oldsmobile Jetfire Turbo Rocket, the first turbocharged production car. Garrett has supplied turbocharging in Formula 1 with Scuderia Ferrari, the FIA World Rally Championship and the 24 Hours of Le Mans. It has operated as a stand-alone company since 2018, and its technology is fitted to around 150 million vehicles worldwide.

Additional Information

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Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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Garrett GTP38R PowerMax Turbo for 1999.5-2003 Ford 7.3L Power Stroke [739619-5004S]

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Garrett GTP38R PowerMax Turbo for 1999.5-2003 Ford 7.3L Power Stroke

Ball Bearing Design

Features

Specifications

Applications

Notes

Frequently Asked Questions

About Garrett

Reviews