Long Tube Headers; 1.5 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Silver Metallic Ceramic Finish; Gaskets; Hardware;Fuel Economy From The EngineFLOWTECH headers are precision engineered and leak tested to get maximum performance and fuel economy from your engine. Each header is formed from specially selected.049 cold roll flash controlled tubing, and features FLOWTECHs exclusive, thick, mandrel-formed Power Plenum collector. All ports are precisely fitted and finished with sturdy, leak-proof O-ringed port seals, and all headers include all mounting hardware including bolts, nuts and premium gaskets. headers are available with either a high-quality satin black paint finish or with a specially formulated, NASA-developed silver luster ceramic coating for rust and corrosion resistance.Fuel Economy From The Engine; Leak Test For Max Performance; Ceramic Headers; Rust And Corrosion Resistance; Mandrel-Formed Power Plenum; Leak-proof O-Ringed Port Seals; Include All Mounting Hardware