S&B's cold air intake for the 2004-2005 Chevy / GMC Duramax LLY 6.6L was engineered to minimize air restriction and flows 43.69% better than stock. This kit comes with a fully enclosed airbox that protects the filter from dirt and keeps out engine heat.
PROTECT YOUR ENGINE
This kit comes with a massive, highly efficient air filter which results in better performance and protects your engine. Available in either 8-layer Cotton Cleanable or Dry Extendable media.