Kooks 3103H640 2x3 LT Headers & H.O. GREEN Cats 15-23 Hellcat Charger/Challenger

Vehicle Fitment

• 2015-2023 Dodge Challenger SRT Hellcat (all trims: Base, Widebody) - V8-6.2L HEMI Supercharged
• 2019-2023 Dodge Challenger SRT Hellcat Redeye (all trims: Base, Widebody) - V8-6.2L HEMI Supercharged
• 2022-2023 Dodge Challenger SRT Hellcat Jailbreak (all variants incl. Redeye Widebody Jailbreak) - V8-6.2L HEMI Supercharged
• 2018 Dodge Challenger SRT Demon - V8-6.2L HEMI Supercharged
• 2023 Dodge Challenger SRT Demon 170 - V8-6.2L HEMI Supercharged
• 2019-2023 Dodge Challenger SRT Super Stock - V8-6.2L HEMI Supercharged
• 2015-2023 Dodge Charger SRT Hellcat (all trims: Base, Widebody) - V8-6.2L HEMI Supercharged
• 2021-2023 Dodge Charger SRT Hellcat Redeye Widebody (all variants incl. Jailbreak) - V8-6.2L HEMI Supercharged

Fitment Notes

• Fits all 2015-2023 Dodge Challenger and Charger models equipped with the supercharged 6.2L HEMI V8 - covering all Hellcat, Hellcat Redeye, Demon, Demon 170, Super Stock, and Jailbreak variants
• Connection pipes outlet at 2-3/4" - connects directly to the factory OEM 2-3/4" cat-back exhaust or any compatible aftermarket 2-3/4" system without cutting or modification
• H.O. GREEN catted connection pipes are specifically rated for forced induction applications - these are the correct cat choice for the supercharged 6.2L HEMI; standard GREEN cats (3103H630) are not recommended for the Hellcat platform
• ECU tuning is recommended after installation for optimal air/fuel ratio calibration and to realize full power gains
• NOT legal for sale, installation, or use in California or other CARB-regulated states
• Professional installation strongly recommended due to the complexity of long tube header installation in the LC/LD platform chassis

Features

• H.O. (High Output) GREEN catted connection pipes carry a higher concentration of precious metals than standard GREEN cats - engineered to withstand the elevated exhaust temperatures and flow demands of the supercharged 6.2L HEMI, rated for forced induction applications up to 750 RWHP, and built to EPA standards
• 2" primary-to-3" collector long tube headers replace the highly restrictive factory exhaust manifolds - significantly improving exhaust scavenging, flow velocity, and power output across the supercharged 6.2L HEMI's powerband
• 3" x 2-3/4" H.O. GREEN catted connection pipes deliver improved mid-pipe flow over the factory connection pipes while maintaining EPA-compliant catalytic emissions control and preventing check engine lights
• Stage 8 Locking Header and Collector bolts included - anti-vibration locking bolt hardware that prevents loosening under the elevated heat cycling and vibration of a high-output supercharged V8
• O2 sensor extensions included - positions all oxygen sensors correctly within the exhaust flow to prevent check engine light activation
• 100% handcrafted in the USA from T304 aircraft-quality stainless steel - backed by Kooks' Limited Lifetime Warranty to the original purchaser

Specifications

• Part Number: 3103H640
• System Type: Long Tube Header & H.O. GREEN Catted Connection Kit
• Primary Tube Diameter: 2.0 in
• Collector Diameter: 3.0 in
• Connection Pipe Inlet: 3.0 in
• Connection Pipe Outlet: 2-3/4 in (OEM connection)
• Catalytic Converter Type: H.O. (High Output) GREEN - Forced Induction Rated
• Forced Induction HP Rating: Up to 750 RWHP
• EPA Status: Built to EPA Specifications
• Material: T304 Stainless Steel
• Finish: Natural (Uncoated)
• CARB Status: Not CARB Legal
• Made in: USA (Statesville, NC)
• Warranty: Limited Lifetime Warranty to Original Purchaser

Included Components

• 1x Pair 2" x 3" T304 Stainless Steel Long Tube Headers (Driver and Passenger Side)
• 1x Pair 3" x 2-3/4" H.O. GREEN Catted Stainless Steel Connection Pipes
• O2 Sensor Extension Harness Kit (2x 6" and 2x 18" extensions)
• Stage 8 Locking Header Bolts
• Stage 8 Locking Collector Bolts
• Header Gaskets
• All Required Installation Hardware

Product Description

The Kooks 3103H640 is a complete long tube header and H.O. GREEN catted connection kit engineered for the 2015-2023 Dodge Challenger and Charger equipped with the supercharged 6.2L HEMI V8 - covering all Hellcat, Hellcat Redeye, Demon, Demon 170, Super Stock, and Jailbreak variants in both standard and Widebody configurations. The kit pairs 2" x 3" T304 stainless long tube headers with 3" x 2-3/4" H.O. GREEN catted stainless steel connection pipes that outlet at the factory 2-3/4" OEM connection point - no cutting, welding, or modification of the factory cat-back required. The H.O. (High Output) GREEN catted pipes use a higher-concentration precious metal substrate than standard GREEN cats, specifically engineered for the elevated exhaust temperatures and flow demands of the supercharged 6.2L HEMI, and rated for forced induction applications up to 750 RWHP while remaining built to EPA standards.

The included Stage 8 Locking Header and Collector bolts are an anti-vibration locking bolt system that resists loosening under the high heat cycling and vibration loads of a supercharged V8 - a significant upgrade over standard header hardware. O2 sensor extensions are included to position all oxygen sensors correctly within the exhaust flow, preventing check engine light activation. ECU tuning is recommended after installation for optimal air/fuel calibration. Handcrafted in Statesville, NC using T304 aircraft-quality stainless steel. Not CARB legal - not for sale or use in California or CARB states. Backed by Kooks' Limited Lifetime Warranty to the original purchaser - warranty void if purchased through unauthorized vendors.