Looking for a rack plug that fits your 5.9 Cummins 1994-1998? Look no further than the DDP RAC Rack Plug! This handy little plug allows 21mm of travel and fits perfectly with your P7100 injection pump. Whether you're wanting to add a little extra protection to your engine or just want to make sure everything is sealed up tight, the DDP RAC Rack Plug is the perfect solution. Don't wait - pick up your DDP RAC Rack Plug today!