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Kooks 3103H640 2 inch long-tube headers for 2015+ Dodge Hellcat Charger Challenger full set
3 inch H.O. green catted connection pipes from Kooks 3103H640 Hellcat kit
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Kooks 2015+ Dodge Challenger/Charger Hellcat 2in x 3in SS Headers w/Green Catted OEM Connection Pipe

$ 4,345.67 $ 3,911.10
$ 3,911.10

Kooks 2" x 3" Long Tube Headers & H.O. GREEN Catted Connection Kit for 2015+ Dodge Charger/Challenger Hellcat 6.2L HEMI RWD

The Kooks 3103H640 2-inch x 3-inch long tube headers and H.O. GREEN catted connection kit unleashes the supercharged fury of 2015+ Dodge Charger and Challenger Hellcat models with the 6.2L HEMI V8, replacing factory manifolds to deliver dyno-proven gains of 60 and 80 rear-wheel horsepower and 70 and 90 lb-ft of torque through equal-length primaries, merged collectors, and high-flow 3-inch x 2-3/4-inch OEM outlet H.O. GREEN catted pipes that bolt directly to the factory exhaust for unrestricted flow under extreme boost pressures exceeding 15 PSI.

Handcrafted from T304 aircraft-quality stainless steel with 3/8-inch laser-cut flanges, full TIG welds, and 400-cell metallic substrate H.O. GREEN catalytic converters, this system supports over 1,000 HP while remaining 49-state emissions compliant and preserving the Hellcat's signature supercharged howl without drone during highway cruising or drag launches. The precision design maintains ground clearance and heat management for street-driven muscle cars without sacrificing the aggressive V8 soundtrack that dominates the quarter-mile.

For Hellcat owners who demand track-dominating performance with street-legal reliability, the 3103H640 kit is the championship-proven, complete bolt-on solution trusted by drag racers and enthusiasts worldwide.

Key Features

  • 2-inch equal-length mandrel-bent primaries for maximum scavenging
  • 3-inch x 2-3/4-inch OEM H.O. GREEN high-flow metallic catalytic converters
  • Full T304 stainless steel with TIG welds and 3/8-inch flanges
  • Merged collectors for optimal exhaust velocity
  • Direct bolt-on to factory exhaust no cutting required
  • Dyno gains of 60 and 80 RWHP and 70 and 90 RWTQ on stock Hellcat

Product Notes

  • 49-state EPA compliant not for sale or use in California or CARB states without exemption
  • Fits 2015+ Dodge Charger and Challenger SRT Hellcat 6.2L HEMI RWD
  • Includes O2 extensions, EPS block-off plug, and all necessary hardware

California Proposition 65: Contains chemicals known to the State of California to cause cancer or reproductive harm.

Warranty: Limited lifetime on stainless construction and 25,000 miles on catalytic converters to original purchaser.

Installation Notes

  • Professional installation required lift and exhaust experience needed
  • Remove factory manifolds and bolt headers to cylinder heads
  • Connect catted pipes to collectors and OEM exhaust
  • Torque flanges to 25-30 ft-lbs and run drive cycle for ECU adaptation

This Part Fits

Year Make Model Submodel/Engine
2015 and 2023 Dodge Charger SRT Hellcat 6.2L Supercharged HEMI V8 RWD
2015 and 2023 Dodge Challenger SRT Hellcat 6.2L Supercharged HEMI V8 RWD

Note: Fits all RWD Hellcat Charger/Challenger with factory exhaust. Excludes AWD models.

What's Included in the Purchase

  • (2) 2" x 3" Long-Tube T304 Stainless Headers with Merged Collectors
  • (2) 3" x 2-3/4" OEM H.O. GREEN Catted Connection Pipes
  • Gaskets, Stage 8 Locking Bolts, Clamps and Hardware
  • O2 Sensor Extensions and EPS Block-Off Plug
  • Detailed Installation Instructions
  • Part Number: Kooks 3103H640

Why Choose Kooks?

  • Over 60 years of championship-winning exhaust engineering
  • Handcrafted in the USA from T304 aircraft-quality stainless steel
  • Limited lifetime warranty and dyno-proven performance

Frequently Asked Questions

  • Q: Does this fit AWD Hellcats?
    A: No, designed for RWD only; AWD requires custom clearance
  • Q: Will it trigger a check engine light?
    A: No, H.O. GREEN cats and extensions maintain proper O2 function
  • Q: How much louder is it?
    A: Intense supercharged howl at WOT, refined without drone at cruise
  • Do Kooks headers require a tune after installation?
    Yes. A professional tune is strongly recommended after installing long tube headers. The significant improvement in exhaust flow changes air fuel ratios and requires ECM recalibration to achieve optimal power output and safe operation.
  • Will these headers void my factory powertrain warranty?
    Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your vehicle warranty simply because you installed an aftermarket part unless they prove the component directly caused the failure. Consult your dealer for specifics on your situation.
  • Q: Do these Kooks headers require a tune after installation?
    A: Yes. A professional tune is strongly recommended after installing long tube headers. The significant improvement in exhaust flow changes air fuel ratios and requires ECM recalibration to achieve optimal power output and safe operation.
  • Q: Will Kooks headers void my factory powertrain warranty?
    A: Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your vehicle warranty simply because you installed an aftermarket part unless they prove the component directly caused the failure in question. Consult your dealer for specifics.
  • Q: What warranty does Kooks provide?
    A: Kooks products are backed by a limited lifetime warranty to the original purchaser against defects in materials and workmanship. Racing and competition use applications may have specific warranty exclusions. Contact Kooks Performance directly for warranty details.

Shipping & Handling

  • Method: UPS or Fed Ex Ground.
  • Availability: Typically ships same day or next if in stock.
  • Packaging: Heavy-duty box with foam protection.

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