Kooks 01-04 Chevrolet Corvette Base 1-3/4 x 3 Header & Catted X-Pipe Kit

Kooks 1-3/4" x 3" Long Tube Headers & Catted X-Pipe for 2001 and 2004 Chevrolet Corvette C5 Z06 LS6 5.7L

The Kooks 2152H220 1-3/4-inch long tube headers and catted X-pipe kit unleashes the full potential of the 2001 and 2004 Corvette C5 Z06 with the LS6 5.7L V8, delivering dyno-proven gains of 40 and 55 rear-wheel horsepower and 35 and 50 lb-ft of torque by replacing factory manifolds with equal-length primaries and a high-flow 3-inch catted X-pipe that connects directly to the 2-1/2-inch OEM exhaust for seamless integration and maximum scavenging across the entire RPM range.

Handcrafted from T304 aircraft-quality stainless steel with 3/8-inch laser-cut flanges, merged collectors, 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 ground clearance and heat management for daily-driven Z06s without compromising the aggressive V8 soundtrack that made the C5 Z06 legendary.

For C5 Z06 owners who demand track-winning performance with street-legal reliability, the 2152H220 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 maximum top-end power
• 3-inch 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 40 and 55 RWHP and 35 and 50 RWTQ on stock LS6

Product Notes

• 49-state EPA compliant not for sale or use in California or CARB states without exemption
• Fits 2001 and 2004 C5 Z06 only with LS6 5.7L
• 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

Note: Fits all 2001 and 2004 C5 Z06 coupe only. Excludes base C5 or convertible models.

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 2152H220

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 2002 Z06?
  A: Yes, direct bolt-on for all 2001 and 2004 C5 Z06 with LS6 5.7L
• 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.