The 7.3L Power Stroke turbodiesel is characterized by its HEUI (hydraulic electric unit injector) injection system, which uses highly pressurized engine oil as a medium for creating fuel pressure directly in the injector body, as a opposed to a system requiring a typical injector pump. In lieu of an injection pump, the 7.3L Power Stroke utilizes a high pressure oil pump (HPOP) and a low pressure lift pump in order to create fuel pressures up to 21,000 psi. In comparison to the prior mechanical injection system, the transition to HEUI promised improved performance, lower emissions, and better fuel economy stemming from increased fuel atomization and greater control over injection events.

The popularity of Ford's International powered F-Series pickups is distinguishable in its production numbers, which greatly exceeded that of any competing manufacturer's diesel sales. By 1999, 1 million Power Stroke equipped trucks had been delivered to dealerships. As demand soared following Ford's introduction of the Super Duty platform, the 2 millionth 7.3L Power Stroke equipped F-Series rolled off the assembly line in 2002. The 7.3L Power Stroke has earned praise as one of the most popular engines offered in a pickup truck, its name synonymous with reliability and longevity.

A greater demand for fuel economy and significantly lower emissions ultimately led to the retirement of the 7.3L during the 2003 model year. For the 2003 MY, the 7.3L Power Stroke was offered alongside the new, smaller 6.0L Power Stroke. By the beginning of the 2004 MY, the 6.0L Power Stroke had completely replaced the 7.3L.

7.3L Power Stroke Specs

International Engine Serial Number Location

V8-engine: 573 cu in (9.4 litres) 190-260 hp Diesel 1968 International TD-20C crawler tractor Hough H 90 E Payloader 65C Payhauler 270 E-270 Payscraper (CO-4000 D COF-4000 D COT-4000 D DVT-573) CO(F)-4070 transtar DC(F)-400 DCF-480 (canadian truck) IH V-800 8-cylinder: V8-engine 798 cu in (13.1 litres) 230-350 hp Diesel 1972 4568-4586-4786 4WD. Engine Serial Number - 3.6L The Engine Serial Number is located on the left side at the rear of the engine cylinder block (1) and is stamped or laser etched onto the block at the assembly plant. When reading the Engine Serial Number the following information can be obtained: Engine Serial Number 10H7A H07190001 is used as an example.

Engine:	7.3L Power Stroke diesel V-8
B10 Life:	200,000 miles (~320,000 km)
B50 Life:	350,000 miles (~560,000 km)
Years Produced:	1994.5 - 2003 model years
Displacement:	7.3 liters, 444 cubic inches
Block/Head Material:	Cast iron block, cast iron cylinder heads
Compression Ratio:	17.5 : 1
Firing Order:	1-2-7-3-4-5-6-8
Bore:	4.11 in (104.4 mm)
Stroke:	4.18 in (106.2 mm)
Aspiration:	Single turbocharger, wastegated, intercooler introduced for 1999 model year
	1994 - 1997:	Garrett TP38
	1998 - 2003:	Garrett GTP38 (wastegated)
Injection:	Direct injection, HEUI (hydraulic electronic unit injection). See injector code breakdown below.
Valvetrain:	OHV, 2 valves per cylinder, hydraulic lifters (no valve adjustment necessary)
*Oil Capacity:**	15 quarts w/ filter (original Ford spec for 1994 was 12 quarts. The dipstick was re-calibrated for the 1995 model year to indicate a full crankcase at 14 quarts)
Engine Weight:	Approx. 920 lbs dry
Peak Horsepower:	• 210 hp @ 3,000 rpm (intro horsepower rating, 1994 MY) • 275 hp @ 2,800 rpm (peak horsepower rating, 2003 MY)
Peak Torque:	• 425 lb-ft @ 2,000 rpm (intro torque rating, 1994 MY) • 525 lb-ft @ 1,600 rpm (peak torque rating, 2003 MY) Dirt showdown for mac.
Engine Dimensions:	Length:	34' (approx)
	Width:	32' (approx)
	Height:	38' (approx)

*Some engines may not drain completely during oil change - advise filling with 13 quarts, check oil level, and add as necessary until crankcase is full. After starting and running the engine, recheck oil level and add as necessary. The high pressure oil pump reservoir retains some engine oil.

7.3L Power Stroke Horsepower/Torque Curves

International's T444E was employed in applications exceeding 60,000 lbs GVWR, paying homage to the fact that the 7.3L Power Stroke is indeed a medium duty rated engine despite its application low GVW, class 3 and 4 pickups. Though gravely outdated by today's standards, the 7.3L Power Stroke was considered an innovative leader of the industry through the 90's and into the early 2000's. The engines have a B50 life of 350,000 miles, which has proven to be a rather conservative rating.

7.3L Power Stroke Transmission Options

• ZF S5-47 5 speed manual transmission - available 1994 to 1998 model years.

• Ford E4OD 4 speed automatic transmission - available 1994 to 1998 model years.

• ZF S6-650 6 speed manual transmission - available 1999 to 2003 model years.

• Ford 4R110 4 speed automatic transmission - available 1999 to 2003 model years.

7.3L Power Stroke Serial Number Location

The serial number of a 7.3L Power Stroke diesel is located on the rear oil cooler pad (driver's side rear of engine, the 'pad' is where the oil filter assembly mounts to the engine block). 1998+ engines also have an engine serial number label on the driver side valve cover. The first 2 digits of the serial number are '7.3', followed by a 4 digit manufacturing designation, and then a 6 digit build number. The sequential build nu

International Engine Serial Number Location