Engine Oil Adapter Housing 6.4L Heavy Duty V8 HEMI Mopar (4893181AD) May 3, 2024 admin Oil Filter Adapter – Mopar (4893181AD). Original OEM Mopar brand new. Fits : 6.4L Heavy Duty V8 HEMI with MDS. 2014 – 2024 Ram 2500 3500 Trucks. Share