Detroit DEF, The DEF and SCR systems are known for causing frequent downtime in Detroit Diesel engines. By opting for a Detroit Diesel SCR DEF delete, you deactivate the DEF dosing and bypass the SCR filter. This modification allows for the full removal of the one-box system or the option to hollow out the filter material while keeping the structure intact. This upgrade reduces system... https://industrialpowerup.com/product/detroit-def-dpf-egr-scr/