Feed your GM diesel engine a continuous supply of cool, high-density charge air with premium enclosed cold air intake systems engineered by S&B Filters. Designed to shatter restrictive factory induction bottlenecks, these high-velocity intakes feature an enclosed airbox that completely seals out harsh under-hood engine heat. This collection is engineered explicitly for 6.6L L5P, LML, LBZ, and LB7 platforms, as well as 3.0L LM2 and LZ0 Duramax engines. S&B cold air intakes drop turbocharger spool times, reduce exhaust gas temperatures (EGTs) on steep towing grades, and improve volumetric efficiency across your entire RPM band. Equipped with massive, high-efficiency cleanable cotton or dry extendable filter media, these direct-fit intake paths perfectly complement your custom performance calibrations and tuning devices while keeping fine dust particles isolated from your compressor wheel.