Alliant Power AP55123 is a remanufactured common rail fuel injector for the Cummins 6.7L ISB in 2010 to 2012 Dodge Ram cab and chassis trucks. Alliant lists it as a substitute for AP55574, its injector for 2011 to 2012 Ram 3500, 4000, 4500 and 5500 trucks.

It is not the pickup injector: Bosch and Mopar list a different injector for 2007 to 2012 Ram pickups. For a 2010 truck, check for SCR (a DEF tank) or match the number on your old injector, because Bosch lists 2007 to 2010 cab and chassis trucks without SCR under a different injector.

Specifications

Fits / Applications

• Dodge Ram cab and chassis, 2010 to 2012, Cummins 6.7L ISB

Part Numbers & Cross Reference

Alliant Power (Alliant lists AP55123 as its substitute) AP55574

Frequently Asked Questions

What trucks does AP55123 fit?

Alliant lists it for 2010 to 2012 Dodge Ram cab and chassis trucks with the Cummins 6.7L ISB. It is not the pickup injector.

Is AP55123 interchangeable with AP55574?

Alliant Power lists AP55123 as a substitute on its AP55574 product page. AP55574 fits 2011 to 2012 Ram 3500, 4000, 4500 and 5500 trucks.

Does it fit a 2010 cab and chassis truck?

Check for SCR (a DEF tank). Bosch lists 2010 to 2012 cab and chassis trucks with SCR under 0 986 435 574, the injector AP55574 crosses to, and 2007 to 2010 trucks without SCR under a different injector, 0 986 435 519. Match the number on your old injector.

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