7.3L Powerstroke HEUI Injector Set of 8 (7× AD + 1× AE Long-Lead) | Alliant Power, 1999.5–2003 Super Duty
The correct full injector set for a late 7.3L — and the one most kits get wrong. A 1999.5–2003 Super Duty takes seven AD injectors in cylinders 1–7 plus one AE long-lead in cylinder 8; the long-lead is a special-length harness injector, and a generic “set of 8” that skips it leaves you with the classic 7.3 idle cackle. This set ships the exact 7 + 1 mix, all new OE units.
| Set contents | 7 × AP63803AD (cylinders 1–7) + 1 × AP63804AE long-lead (cylinder 8) |
| Brand | Alliant Power |
| Condition | New (OE new, not remanufactured) |
| Application | 1999.5–2003 Ford 7.3L Powerstroke Super Duty (engines built after 12/07/1998) |
| Price per injector | $394.97 each · 8 in this set |
| Core charge | Refundable $800.00 (8 × $100.00 per injector), refunded when we receive your 8 rebuildable cores |
Fits / Applications
- 1999.5–2003 Ford F-250/F-350/F-450/F-550 Super Duty and Excursion 7.3L Powerstroke
- Engines built after 12/07/1998 (the AD/AE late-injector trucks)
- Cylinders 1–7 use the AD; cylinder 8 uses the AE long-lead — we ship the correct 7 + 1 combination
Cross Reference: Part Numbers This Covers
AP63803AD (×7) · AP63804AE (×1) · HEUI late 7.3L
Why Buy From Valley Fuel Injection
We are a diesel fuel-injection and turbocharger shop in Woodland, CA — rebuilding pumps, injectors and turbos on our own benches since 1993, not a drop-ship storefront. We verify fitment against your VIN or engine serial before a set ships, so the right 8-piece set arrives the first time. Want to confirm before you buy all 8? We flow-test your pulled injectors in-house.
This complete set is in stock and ships free ground in the lower 48 states. A refundable $800.00 core deposit (8 × $100.00) is added at checkout and refunded in full when we receive your 8 rebuildable cores. Questions on fitment? Call 530-668-0818.
Price shown is for the complete set of 8. Any applicable sales tax and the refundable core charge are additional; ground shipping in the lower 48 is free. Buying tax-exempt? Qualifying diesel repair shops, fleets, farms, and agricultural operations can purchase tax-free. Set up tax-exempt purchasing once and every qualifying order is tax-free going forward.
Prefer to buy one at a time? Single injector: 7.3L Powerstroke HEUI Injector (AD) | Alliant Power AP63803AD New, 1999.5–2003 — order the single and set your quantity.
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