EGR Port Cleaning Kit The most convenient kit available for thoroughly cleaning out clogged EGR ports.. Flexible, spring steel drill bit designed to easily route through EGR ports.. No need to remove the entire intake manifold.. Includes 12” bit.. More effective than other methods including use of speedometer cables and coat hangers.. Solves emission problems including high NOx levels and improves engine performance.. Heat-treated tip rips through carbon deposits. EGR312