Alliant Power
HEUI Fuel Injector (AD) - 99-03 Ford 7.3L AP63803AD

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Alliant Power AE Code Long Lead New Fuel Injector #8 Cylinder | 1999.5-2003 Ford 7.3L Power Stroke
Restore smooth performance and eliminate the infamous 7.3L Power Stroke "cackle" with this genuine Alliant Power AE Code Long Lead New HEUI Fuel Injector. Designed specifically for the Number 8 cylinder, this injector incorporates Ford's updated long-lead calibration to compensate for the greater distance between the #8 cylinder and the High-Pressure Oil Pump (HPOP).
On 2000-2003 7.3L Power Stroke engines, the rear #8 cylinder was prone to oil-fill delays that could create a distinctive knocking or "cackle" noise during operation. Ford addressed this issue with the AE-code injector, featuring modified internal oil passages and injection timing characteristics to improve fuel delivery, reduce noise, and enhance engine smoothness.
Manufactured in the original OE facility and built to the latest engineering specifications, Alliant Power remanufactured injectors deliver dependable performance and reliability that meet or exceed original equipment standards.
Features & Benefits
What's Included
Vehicle Fitment
Ford 7.3L Power Stroke Diesel
Warranty
2-Year Unlimited Mileage Warranty
Alliant Power Split-Shot (Prime) injectors look and perform just like the injectors that come from Ford and Navistar for a very good reason, the same company makes them! But while their injectors are remanufactured, Alliant Power injectors are new and come with all seals required.
| Year | Application |
Navistar P/N |
Ford P/N |
| 1999 - 2003 | Ford F and E-Series - S/N 661496 through 896812 |
N/A |
F8IZ9E527EARM XC3ZE527AARM |
| 2002-2003 | T444E - S/N 1,313,828 to 5,999,999 | 1833639C1, 1833640C1, 1833644C1, 1833645C1, 1833646C92 | N/A |

WARNING : This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov