Kooks 1-3/4″ x 3″ Long Tube Headers & Catted X-Pipe for 2005 and 2008 Chevrolet Corvette C6 LS2 6.0L & 2008 LS3 6.2L
The Kooks 2160H221 1-3/4-inch long tube headers and catted X-pipe kit delivers the perfect torque-focused bolt-on exhaust upgrade for 2005 and 2008 Corvette C6 base models with the LS2 6.0L or early LS3 6.2L V8, replacing factory manifolds to unlock dyno-proven gains of 35 and 50 rear-wheel horsepower and 25 and 40 lb-ft of torque through equal-length primaries, merged collectors, and a high-flow 3-inch x 3-inch x 2-1/2-inch OEM catted X-pipe that connects directly to the factory exhaust for seamless integration and unrestricted flow across the entire RPM range.
Handcrafted from T304 aircraft-quality stainless steel with 3/8-inch laser-cut flanges, full TIG welds, and 300-cell metallic substrate catalytic converters, this system ensures 49-state emissions compliance while supporting up to 650 HP from cams or bolt-ons. The precision engineering maintains factory ground clearance and heat shielding for daily-driven C6s without compromising the deep, aggressive V8 soundtrack that defines the early C6 era.
For 2005 and 2008 C6 base Corvette owners who demand track-proven performance with street-legal reliability, the 2160H221 kit is the championship-proven, complete bolt-on solution trusted by LS enthusiasts worldwide.
Key Features
- 1-3/4-inch equal-length mandrel-bent primaries for strong low-end torque
- 3-inch x 3-inch x 2-1/2-inch OEM catted X-pipe with high-flow metallic substrate
- Full T304 stainless steel with TIG welds and 3/8-inch flanges
- Merged collectors for optimal exhaust velocity
- Direct connection to 2-1/2-inch OEM exhaust no cutting required
- Dyno gains of 35 and 50 RWHP and 25 and 40 RWTQ on stock LS2/LS3
Product Notes
- 49-state EPA compliant not for sale or use in California or CARB states without exemption
- Fits 2005 and 2007 C6 with LS2 6.0L and 2008 C6 with LS3 6.2L
- Includes O2 sensor fittings and air tube provisions for emissions
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 recommended lift required
- Remove factory manifolds and bolt headers to cylinder heads
- Connect X-pipe to collectors and OEM exhaust with supplied hardware
- Torque flanges to 25-30 ft-lbs and run drive cycle for ECU adaptation
This Part Fits
| Year | Make | Model | Submodel/Engine |
|---|---|---|---|
| 2005 and 2007 | Chevrolet | Corvette | Base. LS2 6.0L |
| 2008 | Chevrolet | Corvette | Base. LS3 6.2L |
Note: Fits all C6 base coupe and convertible with factory exhaust. Manual or automatic.
What’s Included in the Purchase
- (2) 1-3/4″ x 3″ Long-Tube T304 Stainless Headers with Merged Collectors
- (1) 3″ x 3″ x 2-1/2″ Catted Stainless X-Pipe
- Gaskets, Stage 8 Locking Header Bolts, Clamps and Hardware
- O2 Sensor Extensions and Fittings
- Detailed Installation Instructions
- Part Number: Kooks 2160H221
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 my 2006 C6 manual?
A: Yes, direct bolt-on for all 2005 and 2008 C6 base models manual or auto - Q: Will it cause a check engine light?
A: No, catted X-pipe and included extensions keep sensors in position - Q: How loud is the exhaust?
A: Deep aggressive V8 rumble, refined without drone at highway speeds - 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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