Product Description
Refresh the fueling on your 7.3L Power Stroke with the INDUSTRIAL INJECTION AP63803ADR2 AD-code reman injector. Precision-calibrated for 1999.5–2003 Ford 7.3L applications, this 120cc unit restores crisp throttle response and consistent fuel delivery for daily driving or mild performance builds.
Fitment
- 1999.5–2003 Ford 7.3L Power Stroke (AD code)
- Direct replacement for late-’99.5–2003 split-shot AD applications; verify your injector code before ordering
What’s Included
- (1) Remanufactured AD-code injector — 120cc
- Pre-installed O-rings/seals (inspect and lubricate on install)
Why Buy This Injector
- OE-style AD split-shot control with precise reman calibration
- Designed for dependable, clean performance on stock or lightly modified trucks
- Compatible with factory fuel system and stock tuning in AD applications
Recommended Parts (CPP Internal Links)
- MAHLE GS33440 Injector Seal/O-Ring Kit — 7.3L (one per injector)
- BOSTECH ISK101 Injector Seal Kit — 7.3L
- ARP 250-4201 Head Stud Kit — 7.3L (for higher-than-stock boost)
- BOSTECH ISK601 Fuel Filter Housing Seal Kit — 1999–2003
- Shop All Ford Power Stroke Categories
Cross-Reference / Alternatives
Helpful Notes
- Sold individually; order 8 for a complete set.
- Match to AD-code applications only. If unsure, confirm your injector code before purchase.
- Always replace external O-rings and lube with clean engine oil; verify fuel and oil system health before first start.
FAQ
Will this injector work with stock tuning?Yes—this AD-code reman at 120cc is intended for AD applications and works with stock fueling/tuning when used as a replacement in AD trucks.
Do I need to buy a seal kit?We recommend fresh external seals on installation. See the MAHLE and BOSTECH injector seal kits linked above.
Is this sold as a single or a set?Sold individually. Order eight injectors for a full set replacement.
What if I want more fuel for future mods?Consider stepping up to the 160cc (ADR3) or 230cc (ADR4) AD-code remans listed in the Alternatives section.
