Kooks 2180H640 2x3 LT Header & H.O. Green Cat Kit 2020-2026 Corvette C8 LT2 6.2L

Vehicle Fitment

• 2020-2026 Chevrolet Corvette C8 Stingray Coupe (RWD, 6.2L LT2 V8)
• 2020-2026 Chevrolet Corvette C8 Stingray Convertible / HTC (RWD, 6.2L LT2 V8)
• 2020-2026 Chevrolet Corvette C8 Stingray Z51 Package (RWD, 6.2L LT2 V8)

Fitment Notes

• Does not fit 2023-2026 Corvette C8 Z06 (LT6 5.5L) - see Kooks 2181Y500
• Does not fit 2024-2026 Corvette C8 E-Ray - exhaust routing differs due to hybrid AWD drivetrain
• Connects to Kooks H.O. GREEN Catted OEM-style connection pipes (included in kit)
• Professional installation and ECU tune strongly recommended after install
• Not legal for sale, installation, or use on California-registered vehicles

Features

• 2 in. primary tubes with 3 in. collectors engineered for the mid-engine LT2 layout
• Kooks High Output GREEN Cats - EPA-verified, rated up to 750+ RWHP
• Oval port design matched to LT2 cylinder head with stock bolt pattern flanges
• 3/8 in. laser-cut flanges for precise sealing and zero exhaust leaks
• Mandrel-bent T304 aircraft-quality stainless steel throughout
• Robot TIG-welded seams for consistent flow and long-term durability
• 3 in. flanged collector outlet connects directly to included OEM-style catted connection pipes
• Handcrafted in the USA - backed by Kooks' limited lifetime warranty

Specifications

• Part Number: 2180H640
• Primary Tube Diameter: 2 in.
• Collector Diameter: 3 in.
• Connection Pipe Size: 3 in. x 2-3/4 in. (OEM)
• Catalytic Converter Type: Kooks H.O. GREEN High-Flow (EPA-verified)
• Flange Thickness: 3/8 in. laser-cut
• Port Style: Oval (LT2-specific)
• Material: T304 stainless steel
• Position: Driver and passenger side (full system)
• Country of Origin: United States

Included Components

• 2x Long Tube Headers (driver and passenger side, 2 in. x 3 in.)
• 2x H.O. GREEN Catted OEM Connection Pipes (3 in. x 2-3/4 in.)
• 1x Header Gasket Set
• 1x Bolt/Hardware Installation Kit

Product Description

The Kooks 2180H640 is a complete long tube header and High Output GREEN catted connection kit built specifically for the 2020-2026 Chevrolet Corvette C8 Stingray with the LT2 6.2L V8. The 2 in. primary tubes feed into 3 in. collectors, significantly improving exhaust scavenging over the factory manifolds in the C8's tight mid-engine bay. The oval port flanges are laser-cut to 3/8 in. and match the LT2 head exactly, ensuring a proper seal and stock bolt-on fitment with no modifications required.

The bundled H.O. GREEN high-flow catalytic converters are EPA-verified and rated to support builds well beyond stock power levels, making this kit suitable for naturally aspirated and forced induction LT2 applications alike. Everything needed for installation is included - headers, catted connection pipes, gaskets, and hardware. An ECU tune is strongly recommended after install to maximize power gains and maintain proper fueling. Handcrafted in Statesville, NC and backed by a limited lifetime warranty, the 2180H640 is the definitive header solution for the C8 Stingray platform.