1999.5-2003 Powerstroke Stage 5 Injector 400cc W/Oil Mods (AP63803ADR5)

Description

Industrial Injection Stage 5 400cc race injector with internal oil modifications for 1999.5-2003 Ford F-250/F-350 and Excursion 7.3L Powerstroke trucks. The AD-code version — for engines using AD-coded HEUI injectors from the factory. Built for maximum fuel flow on serious horsepower 7.3L race builds.

Internal oil modifications improve plunger response and lubrication margin at competition duty cycles. Each injector is calibrated and flow-tested on the IIS bench for balanced cylinder-to-cylinder delivery at the high end of the fuel map.

Features

• 400cc High-Flow HEUI Injector Design
• AD-Code (matches engines with factory AD injectors)
• Internal Oil Modifications
• Fully Calibrated & Flow-Tested
• Race-Ready Performance
• Sold Individually
• Part Number: AP63803ADR5

Notes

• Race-only. Not legal for "On-Road," "Off-Road," or "Dual-Use" applications — dedicated competition use only. Compliance with state and federal emission standards is the consumer's responsibility.
• For the AB-coded version (early 1999.5+ engines built before 12/07/98 cutover), see the AP63801ABR5 Stage 5.
• Core deposit applies — keep your old injector and return it to recover the deposit.