Aftermarket DOC for Mack/Volvo Engines

DPFXFIT™ direct-fit Mack and Volvo DOC replacements for heavy-duty diesel engines, including D11, D13, D16, MP7, MP8, and MP10. These diesel oxidation catalysts are built with durable stainless steel and OEM-grade substrates to support reliable emissions control and aftertreatment performance.

Our aftermarket Mack/Volvo DOC units provide dependable oxidation efficiency, emissions compliance, and long service life for heavy-duty truck applications.