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HEUI Injector for Navistar (AP66978)

HEUI Injector for Navistar (AP66978)

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This injector is manufactured by Alliant Power.

This part replaces Navistar OEM Part Numbers: 1842578C95, 5010658R92, 1842225C91, 6907-PP, 6924-PP

Installation requires removal of high-pressure oil rail. Use AP0025 High-Pressure Oil Rail Seal Kit when reinstalling oil rail.

This product contains an item which is sold exchange, meaning the old unit, or 'core' must be returned within 35 days of order shipment. For more information regarding our core and warranty policies please visit


Year Range: 2004-2005

Application: DT570: 285 HP to 330 HP 

Engine Serial Number Range: 2,000,001 to 2,999,999