{"product_id":"bbc-upright-headers-2-1-4-in-w-4-in-col-1","title":"Upright Headers Big Block Chevy 2-1\/4 Inch Upright Headers With 4 Inch Collector Black Finish FlowTech","description":"\u003cp\u003e\u003cb\u003ePart #:\u003c\/b\u003e 11553FLT\u003c\/p\u003e\u003cp\u003eFlowtech Headers are the perfect combination of quality and value. These Big Block Chevy Upright headers available in 2-1\/4 inch tube diameters are ideal for even big cubic inch Big Block Chevy engines.Features and Benefits:CNC Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increases the cylinder scavenging effect and improves engine breathing Heavy duty 16-gauge 409SS tubing for increased strength and durability 2-1\/4 inch tubing diameter for increased exhaust flow increasing performance and improved throttle response Extended 4 inch collector for maximum strength and exhaust flow Extra thick 7\/16 inch header flange for a leak-free seal and maximum strength Welded-in collector merge spears to control exhaust gas re-entry into primary tubes Center of exhaust port to end of collector length is 33-1\/2 inchDetails:Air Injection Tubes: NoApplication: Big Block ChevyBolt size: 3\/8-16 x 3\/4Bolts Included: YesCARB (California) Compliant: NoCatalytic Converter Quantity: 0Collector Attachment: Weld-OnCollector Diameter: 4.00 InchCollector Port Diameter: 4.00 InchCollector Reducer Included: NoColor: BlackCylinder Head Flange Thickness: 7\/16Design: UprightDrive: 2WD, 4WDEGT (Exhaust Gas Temperature) Port: NoEGT Port: NoEmission Code: 4Engine: GM Big BlockFinish: PaintedFlange Thickness: 0.4375 Inch, 7\/16Gasket Or Seal Included: YesGrade Type: PerformanceHeader Finish: Black PaintHeader Series: FlowtechHeader Style: UprightMaterial: 409 Stainless SteelMounting Hardware Included: YesOxygen Sensor Port: NoPort Shape: RoundPrimary Tubing Diameter: 2-1\/4, 2.25 InchProduct Type: HeadersQuantity: Sold as a PairSheen Level: SatinTube Material: 409 Stainless SteelTube Wall Thickness: 16 Gauge\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCNC Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increases the cylinder scavenging effect and improves engine breathing\u003c\/li\u003e\n\u003cli\u003eHeavy duty 16-gauge 409SS tubing for increased strength and durability\u003c\/li\u003e\n\u003cli\u003e2-1\/4\" tubing diameter for increased exhaust flow increasing performance and improved throttle response\u003c\/li\u003e\n\u003cli\u003eExtended 4\" collector for maximum strength and exhaust flow\u003c\/li\u003e\n\u003cli\u003eExtra thick 7\/16\" header flange for a leak-free seal and maximum strength\u003c\/li\u003e\n\u003cli\u003eWelded-in collector merge spears to control exhaust gas re-entry into primary tubes\u003c\/li\u003e\n\u003cli\u003eCenter of exhaust port to end of collector length is 33-1\/2\"\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBig Block Chevy 2-1\/4\" Upright Headers with 4\" Collector- Black Finish\u003c\/p\u003e","brand":"Flowtech","offers":[{"title":"Default Title","offer_id":51827860209976,"sku":"F00M 11553FLT","price":631.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/353043391.webp?v=1778810147","url":"https:\/\/store.motormia.co\/products\/bbc-upright-headers-2-1-4-in-w-4-in-col-1","provider":"MOTORMIA","version":"1.0","type":"link"}