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OPen BOX ITEM......
Part number 21534115 is a Hydrocarbon (AHI) Dosing Module for Volvo and Mack heavy-duty trucks. This module, often referred to as an air purge valve module, is a critical component of the diesel aftertreatment system that controls fuel injection to the 7th injector during the Diesel Particulate Filter (DPF) regeneration process.Product OverviewPrimary Function: It manages fuel dosing to maintain proper soot levels and supports passive, active, and forced DPF regenerations.Engine Compatibility: Designed for Volvo D11, D13, and D16 engines and Mack MP7 and MP8 engines.Vehicle Fitment: Commonly used in 2012–2017/2018 models including the Volvo VNL, VNM, VHD and Mack Granite, Pinnacle, and Anthem.Symptoms of Failure: A failing module can cause fault codes, a severe engine derate (power loss), and the failure of all DPF regeneration cycles.Common Cross-ReferencesThis part is often interchangeable with or replaced by the following OEM numbers:
23185531
21870667
22452551
21932493
