5297989 Genuine Cummins Diesel Particulate Filter for ISL, D11

Cummins ISL D11 Diesel Particulate Filter — What It Does The DPF on the Cummins ISL and D11 is the exhaust’s final filter: a ceramic honeycomb trapping soot the engine makes, burning it off in regens, and slowly accumulating the ash that no regen can remove. It’s a consumable with a long fuse — and its condition quietly governs backpressure, fuel economy, and how often the truck asks for a regen instead of doing its job. Common Symptoms of a Failing or Loaded DPF Regens arriving more often, running longer, or failing to complete Soot-load and differential-pressure codes climbing the…