Flowtech Headers are the perfect combination of quality and value. These block hugger headers fit the popular small block Chevy with fast burn D-port heads. These headers are coated in high heat resistant black paint. Ideal For Street Rods Mandrel Bent Tubes Provide Smooth Flow/Increased Exhaust Velocity 16 Gauge Tubing Increases Strength Increased Throttle Response Increased Performance TIG Welded Collector Leak Free Seal Premium Hardware Additional Attributes: GTIN: 00090127690765 Application: Automotive Coated Finish: Black Collector Tube Size: 2.500 in. Engine Make/Size: Chevy Small Block (262-400) Finish: Black Paint Material: Steel Port Shape: D-Port Tube Diameter: 1.625 in. Tube Direction: Down Swept WARNING CA Proposition 65: Yes WARNING CA Proposition 65 Message: WARNING Cancer and Reproductive Harm www.P65Warnings.ca.gov Extened Information: Emissions : Electronically Announced Life Cycle Status: Available To Order Packaging: Quantity of Each: Package UOM: Dimension: 37.5000 x 10.0000 x 19.0000 inches PDF: 11701-5-6flt