Long Tube Header Ceramic Coated 1967-1974 Chevy/GMC 4WD Truck 1/2-3/4-1-Ton 1967-1974 4WD Blazer/Jimmy K5/Suburban 283-400 Tube Size 1.625 Inch Collector Size 2.5 Inch FlowTech

Part #: 31506FLT

Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5/16 inch flanges with sealing rings for a leak-free seal.All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat and corrosion resistant metallic ceramic thermal coating that increases exhaust velocity and reduces underhood temps for increased performance.Features and Benefits:Fuel Economy From The Engine Leak Test For Max Performance Ceramic Headers Rust And Corrosion Resistance Mandrel-Formed Power Plenum Leakproof O-Ringed Port Seals Include All Mounting HardwareAssociated Notes: Breaking in an engine with ceramic coated headers Will result in damage to the coating and will Void all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Flowtech recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Please call Flowtech tech service at 270-781-9741 for additional information regarding ceramic coated exhaust products. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Flowtech does not recommend the use of header wraps as this will void the warranty.Details:Air Injection Tubes: NoBolt size: 3/8-16 x 3/4Bolts Included: YesCARB (California) Compliant: NoCollector Attachment: 3-Bolt FlangeCollector Diameter: 2.50 InchCollector Reducer Included: YesCollector Reducer Outlet Diameter: 2.25 InchColor: SilverCylinder Head Flange Thickness: 5/16Design: Long TubeDrive: 4WDEGT (Exhaust Gas Temperature) Port: NoEmission Code: 4Engine: Chevrolet Small Block Gen IFinish: Ceramic CoatedFlange Thickness: 0.3125 Inch, 5/16Gasket Or Seal Included: YesGrade Type: PerformanceHeader Finish: Silver CeramicHeader Series: Flowtech IIHeader Style: Long TubeMaterial: Mild SteelMounting Hardware Included: YesOxygen Sensor Port: NoPort Shape: OvalPrimary Tube Dia.: 1-5/8 inchPrimary Tubing Diameter: 1-5/8, 1.625 InchProduct Type: HeadersQuantity: Sold as a pairTube Material: Mild Steel

Features:

• Fuel Economy From The Engine
• Leak Test For Max Performance
• Ceramic Headers
• Rust And Corrosion Resistance
• Mandrel-Formed Power Plenum
• Leakproof O-Ringed Port Seals
• Include All Mounting Hardware

1967-1974 Chevy/GMC 4WD truck, 1/2-3/4-1-Ton, 1967-1974 4WD Blazer/Jimmy K5/Suburban: 283-400, Tube Size 1.625", Collector Size 2.5"