Cart 0

Powerstroke 99-03 7.3L

The 7.3L Power Stroke was introduced in 1999 and continued through mid-2003, produced by International Navistar. This model was also known as the “Super Duty” body style. The 99-03 7.3L Power Stroke is an electronically controlled direct injection which uses a split shot HEUI (hydraulic/electronic unit Injector) fuel injector backed with a high pressure oil pump (HPOP). The 7.3 utilizes the HPOP in conjunction with a low pressure lift pump to create an overall fuel pressure of 21,000psi. The HEUI injectors were used to improve performance, lower overall emissions, and increase fuel economy. Ford introduced the intercooler in 1999 to cool the charged air and increase the air density which would increase the horsepower potential. The 7.3L continued to use the Garrett single turbocharger and upgraded it to the GTP38. These 99-03 7.3L Super Duty’s had the option of a ZF S6-650 6-speed manual transmission or the Ford 4R110 4-Speed automatic transmission. The 4R110 was an upgrade from its predecessor E4OD.

If you have any questions whatsoever on your Power Stroke and would like to speak with one of our professional diesel technician’s about your truck, please do not hesitate to contact us at 208.292.4401 or email us at We have The Power to Feed Your Diesel!

Shop for Powerstroke 99-03 7.3L

Air Intakes | Intercoolers

Tuners | Chips | Monitors

Exhaust | Mufflers | Tips

50 State Legal Products

Fuel System | Injectors | Pumps

Lift Pumps


Power Packages


Turbos | Superchargers


Engine Components

Water Meth | Nitrous

Cooling System

OEM | Maintenance

Crate Engines

Fabrication Components

Suspension, Lifts & Steering

Nerf Bars, Steps & Running Boards


Bed Covers & Accessories



Fender Flares

Window Shades & Visors

Hitches & Towing

Grille Guards & Bull Bars

Fuel Tanks


Air Compressors

Headache Racks

Mud Flaps

Vehicle Covers



Bug Deflectors

Paint Protection Film

Offroad Accessories

Exterior Appearance Products

Wheel Well Liners

Gauges & Pods

Switches & Outlets

Floor Mats

Seats & Covers


Tools & Storage

Safety Gear

Interior Appearance Products




Lug Nuts

Wheel Spacers-Adaptors

TPMS Sensors

Wheel Accessories

Decals & Accessories

Gift Certificates


Chris Rosscup uses Alligator Performance as his one shop stop for anything Diesel related. Here's what he had to say about our customer service.

Alligator is amazing. They not only get me the right parts, at the best price, but they also do so incredibly fast! They are THE place for all of your Diesel needs!