Sinister Diesel Remanufactured Fuel Injector Set – 7.3L Powerstroke (Solenoid Code AD)
Fits 1999.5–2003 Ford F-250 / F-350 / F-450 / F-550 Super Duty & Excursion
For engines built after 12/7/98
Note: Due to high demand, please allow approximately 2–3 weeks for your injectors to be built, tested, and ready to ship.
Key Features
• OEM-style remanufactured injectors with new internals and seals
• Designed to meet or exceed OEM performance and flow specifications
• Includes “AE” injector for cylinder #8 to reduce the common Powerstroke “cackle” noise
• Fully flow-tested and balanced for smooth operation and consistent performance
• Precision components ensure improved fuel atomization and cold-start reliability
• Cost-effective alternative to expensive OE dealership injectors
• 2-year unlimited mileage warranty
Product Overview
The Sinister Diesel Remanufactured Injectors for the 1999.5–2003 Ford 7.3L Powerstroke are the perfect solution for owners seeking factory-level reliability and performance without the dealer price tag. Each injector is built to exacting standards and engineered to meet or exceed OEM flow and performance requirements.
Every injector undergoes a complete remanufacturing process — disassembled, cleaned, inspected, and rebuilt using all-new wear components, seals, and O-rings. They are then flow-matched and tested under multiple conditions to ensure balanced fuel delivery, smooth idle, and dependable operation.
These injectors restore lost power, improve throttle response, and eliminate rough idle or hard-start issues caused by worn or sticking injectors. The included “AE” injector for the #8 cylinder helps minimize the well-known Powerstroke “cackle” noise common in these model years.
If you prefer to use all “AD” injectors instead, our team can make that change upon request.
What’s Included
• (8) Sinister Diesel Remanufactured Fuel Injectors for 7.3L Powerstroke (Solenoid Code AD)
• Includes one “AE” injector for cylinder #8 (to reduce cackle noise)
• 2-year unlimited mileage warranty
Q&A
Q: Are these injectors stock replacements?
A: Yes. These are direct-fit OEM replacement injectors that require no tuning or modification for installation.
Q: Why does the #8 cylinder use an “AE” injector?
A: The “AE” injector helps reduce the “cackle” noise that some 7.3L Powerstroke engines produce, improving overall smoothness and idle quality.
Q: Can I request all “AD” injectors instead?
A: Yes. If you prefer all injectors to be “AD” code, contact our team at the time of order to make that adjustment.
Q: How are these injectors remanufactured?
A: Each injector is completely disassembled, cleaned, and rebuilt using new internal components, seals, and O-rings. They are then flow-balanced and tested to meet or exceed OEM performance.
Q: What is the warranty coverage?
A: All Sinister Diesel injectors are backed by a 2-year unlimited mileage warranty.
Q: Why is there a 2–3 week lead time?
A: Each injector set is remanufactured, calibrated, and tested to order. This process ensures consistent performance, balanced flow rates, and the quality assurance you expect from Sinister Diesel.
