Upright Headers Big Block Chevy 2-1/4 Inch Upright Headers With 4 Inch Collector Natural Finish FlowTech

Part #: 11551FLT

Flowtech 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: 2.25 InchCollector Reducer Included: NoColor: SilverCylinder Head Flange Thickness: 7/16Design: UprightDrive: 2WD, 4WDEGT (Exhaust Gas Temperature) Port: NoEGT Port: NoEmission Code: 4Engine: GM Big BlockFinish: NaturalFlange Thickness: 0.4375 Inch, 7/16Gasket Or Seal Included: YesGrade Type: PerformanceHeader Finish: NaturalHeader 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: Semi-GlossTube Material: 409 Stainless SteelTube Wall Thickness: 16 Gauge

Features:

• 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" tubing diameter for increased exhaust flow increasing performance and improved throttle response
• Extended 4" collector for maximum strength and exhaust flow
• Extra thick 7/16" 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"

Big Block Chevy 2-1/4" Upright Headers with 4" Collector- Natural Finish