Cold Air Intake for Mazda B4000 (2001-2003) 4.0L Engine - BlueTired of your Mazda B4000 feeling a bit breathless when you hit the gas, especially with a load? That sluggish feeling from the factory intake can really dull the driving experience, but theres a straightforward fix thatll make your truck feel much more responsive. Performance Cold Air Intake for Mazda B4000 (4. 0L V6) From the factory, your 2001 2003 Mazda B4000s 4. 0L V6 came with an air intake system designed for quiet operation and cost