Overview:These Flowtech upright derby style headers fit the 2.8L, 3.1L and 3.4L GM V6 engines with both round port or D-port style exhaust ports. 1-1/2 in. and 1-5/8 in. mandrel bent primary tubes provide consistent tubing diameters for smooth flow of the exhaust pulses and increase the cylinder scavenging of the exhaust to improve engine breathing. The headers are constructed from heavy duty 16-gauge 409 stainless steel tubing for increased strength and durability. These headers use a 10 in. long, 2.5 in. collector with 20 in. long primary tubes. The 3/8 in. thick header flange provides a leak-free seal and maximizes strength.Features: Mandrel bent tubes provide consistent tubing diameters for better exhaust pulse flow and improved performance 1-1/2 in. and 1-5/8 in. primary diameters available for increased exhaust flow and improved throttle response Heavy duty 16-gauge 409 Stainless Steel used for strength and durability 10 in. long, 2.5 in. collector improves exhaust flow 3/8 in. thick header flange for a leak-free seal and maximum strength Available for both round and D-port exhaust ports Header gaskets included Application:UniversalSpecs: Brand Flowtech California Proposition 65 Chemical Name Chromium (hexavalent compounds) California Proposition 65 Chemical Name Nickel (Metallic) California Proposition 65 Required Yes CARB (California) Compliant No Collector Diameter 2.50 inch Collector Length 10 inch Emission Code 4 Engine Chevrolet V6 Flange Thickness 3/8 Inch Header Finish Natural Header Style Upright Inlet Port Shape Round Installed Height 27 inch Primary Tube Dia. 1-1/2 inch Primary Tube Length 20 inch Product Type Headers Tube Material 409 Stainless Steel Warning California Proposition 65
