Kooks 1-7/8″ x 3″ Long Tube Headers & Catted Connection Pipes for 2014 and 2017 Chevrolet SS 6.2L LS3
The Kooks 2510H420 1-7/8-inch long tube headers and catted connection pipes deliver the complete bolt-on exhaust upgrade for the 2014 and 2017 Chevrolet SS with the 6.2L LS3 V8, replacing factory manifolds to unlock dyno-proven gains of 50 and 65 rear-wheel horsepower and 45 and 60 lb-ft of torque through equal-length primaries, merged collectors, and high-flow 3-inch catted pipes that connect directly to the OEM mid-section for unrestricted flow from idle to redline.
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 supports over 800 HP while remaining 49-state emissions legal and preserving the factory dual-mode exhaust function for quiet cruising or wide-open track roar. The precision design maintains ground clearance and heat management for daily-driven SS sedans without sacrificing the deep V8 soundtrack that defines the platform.
For Chevrolet SS owners who demand Australian muscle-car performance with American LS power, the 2510H420 kit is the championship-proven, complete bolt-on solution trusted by enthusiasts worldwide.
Key Features
- 1-7/8-inch equal-length mandrel-bent primaries for maximum scavenging
- 3-inch catted connection pipes with high-flow metallic substrate
- Full T304 stainless steel with TIG welds and 3/8-inch flanges
- Merged collectors for optimal exhaust velocity
- Direct bolt-on to OEM exhaust retains dual-mode function
- Dyno gains of 50 and 65 RWHP and 45 and 60 RWTQ on stock LS3
Product Notes
- 49-state EPA compliant not for sale or use in California or CARB states without exemption
- Fits all 2014 and 2017 Chevrolet SS with 6.2L LS3
- Includes O2 extensions 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 recommended lift required
- Remove factory manifolds and bolt headers to cylinder heads
- Connect catted pipes to collectors and OEM mid-pipe
- Torque flanges to 25-30 ft-lbs and run drive cycle for ECU adaptation
This Part Fits
| Year | Make | Model | Submodel/Engine |
|---|---|---|---|
| 2014 and 2017 | Chevrolet | SS | Base. LS3 6.2L V8 |
Note: Fits all 2014 and 2017 Chevrolet SS sedan with factory exhaust. Manual or automatic.
What’s Included in the Purchase
- (2) 1-7/8″ x 3″ Long-Tube T304 Stainless Headers with Merged Collectors
- (2) 3″ Catted Connection Pipes
- Gaskets, Stage 8 Locking Bolts, Clamps and Hardware
- O2 Sensor Extensions
- Detailed Installation Instructions
- Part Number: Kooks 2510H420
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 keep the factory dual-mode exhaust?
A: Yes, full NPP-style dual-mode function is retained - Q: Will it fit my 2016 SS manual?
A: Yes, direct bolt-on for all 2014 and 2017 Chevrolet SS - Q: How loud is it?
A: Aggressive in open mode, refined and quiet in closed mode - 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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