Product Description:
Hawks Motorsports is pleased to offer our clients the 2020+ Chevrolet Corvette C8 6.2L 1-7/8" Stainless Steel Super Street Series Headers, Kooks 21801400. These Kooks Super Street headers are designed for the C8 Corvette Stingray platform and feature 1-7/8" equal-length primary tubes, 304 stainless steel construction, oval ports, stock bolt-pattern connections and flanged collector outlets designed to connect directly to the OEM catalytic converters or Kooks Super Street OEM connection pipes.
If you're looking to get more serious about the exhaust side of your C8, these headers are a solid place to start. The 1-7/8" equal-length primaries give the LT2 a freer path out of the cylinder heads, while the one-piece collectors and Kooks scavenging-spike design are built with performance in mind. Pair them with the factory catalytic converters or Kooks' Ultra-GREEN connections, bolt everything together using the stock-style mounting points, and you've got a C8 exhaust setup that looks and performs like it belongs on a performance build.
Kooks constructs the headers from 304 stainless steel and uses 3/8"-thick flanges, 1-7/8" equal-length primary tubes, patented scavenging spikes and one-piece collectors. The collector outlet is designed around the OEM connection point for a direct connection to the factory catalytic converters or Kooks Super Street OEM connection pipes.
Kooks identifies these headers as no-tune-required and states that the kit includes the gaskets and bolt kit required for installation. No additional parts are required for the header installation itself, although the customer should verify the desired catalytic-converter or Kooks connection-pipe configuration before ordering.
Kooks also reports dyno testing of its C8 Super Street headers combined with its high-flow catalytic-converter connection pipes on a Z51-equipped C8. The manufacturer reported gains of more than 20 horsepower and 26 lb-ft of torque to the tires on the stock tune, with no check-engine light during that test. Actual results can vary by vehicle, configuration and conditions.
KEY FEATURES
- Manufacturer: Kooks Headers & Exhaust
- Part Number: 21801400
- Vehicle: Chevrolet Corvette C8
- Engine: 6.2L V8
- Header Series: Super Street Series
- Primary Tube Diameter: 1-7/8"
- Primary Tube Design: Equal Length
- Material: 304 Stainless Steel
- Port Shape: Oval
- Flange Thickness: 3/8"
- Collector: One-Piece Collector
- Collector Connection: Stock/OEM Bolt Pattern
- Collector Outlet: Flanged
- Scavenging Spikes: Kooks patented design
- OEM Catalytic Converter Compatible: Yes
- Kooks Super Street OEM Connection Compatible: Yes
- Gaskets: Included
- Bolt Kit: Included
- Tune Required: No, per Kooks
- Additional Parts Required: No, for the header installation
- Quantity: Sold as a set
- Condition: New
PRODUCT SPECIFICATIONS
| Specification | Details |
|---|---|
| Manufacturer | Kooks Headers & Exhaust |
| Part Number | 21801400 |
| Vehicle | Chevrolet Corvette C8 |
| Engine | 6.2L V8 |
| Header Series | Super Street |
| Primary Tubes | 1-7/8" |
| Primary Design | Equal Length |
| Material | 304 Stainless Steel |
| Port Shape | Oval |
| Flange Thickness | 3/8" |
| Collector | One-Piece |
| Collector Connection | Stock Bolt Pattern |
| OEM Catalytic Converter Connection | Yes |
| Kooks OEM Connection Compatible | Yes |
| Gaskets | Included |
| Bolt Kit | Included |
| Tune Required | No, per Kooks |
| Quantity | Set |
VEHICLE FITMENT / FITS THE FOLLOWING MODELS
2020-2025 Chevrolet Corvette Stingray
- 6.2L V8
- C8 platform
- Includes applicable Z51 configurations
2024-2026 Chevrolet Corvette E-Ray
- 6.2L V8
Kooks' current fitment table lists 21801400 for 2020-2026 Corvette Stingray and 2024-2026 E-Ray, along with 2020-2025 Z51 and Z51 Performance applications.
IMPORTANT FITMENT EXCLUSIONS
Kooks specifically states that 21801400 does not fit the C8 Z06, ZR1 or Grand Sport.
Because the supplied Hawks product title identifies this as a 2020 C8 Corvette application, the title has been kept broad rather than adding newer applications that were not part of the supplied title. The current manufacturer fitment should be used for final application verification.
IMPORTANT APPLICATION NOTES AND EXCLUSIONS
C8 Z06, ZR1 and Grand Sport
Do not use Kooks 21801400 for the C8 Z06, ZR1 or Grand Sport. Kooks explicitly excludes these applications.
Factory Catalytic Converters
The headers are designed to connect directly to the OEM catalytic converters using the stock-style connection.
Kooks Ultra-GREEN Connections
The headers can also be paired with Kooks Super Street OEM connection pipes, including the Ultra-GREEN catted configuration.
No-Tune Design
Kooks identifies the 21801400 headers as no tune required. This is a manufacturer-specific product statement and should not be interpreted as a guarantee that no calibration changes will ever be beneficial for a modified vehicle.
California / Emissions
Current retailer listings identify these headers as not legal for sale or use in California. Customers should verify current emissions requirements applicable to their vehicle and location before purchase.
INSTALLATION NOTES
- Verify the vehicle and engine application before ordering.
- Verify that the vehicle is not a C8 Z06, ZR1 or Grand Sport.
- The headers use the stock bolt-pattern connection.
- Collector outlets are designed to connect to the OEM catalytic converters or compatible Kooks Super Street OEM connection pipes.
- Gaskets and the required bolt kit are included.
- Kooks identifies the headers as requiring no additional parts for the header installation.
- Inspect all mating surfaces before installation.
- Verify header clearance around surrounding components before final tightening.
- Check all exhaust connections for leaks after installation.
- Follow the current Kooks installation instructions.
- Verify applicable emissions requirements before installation.
FREQUENTLY ASKED QUESTIONS
What Corvette does Kooks 21801400 fit?
Kooks currently lists 21801400 for the C8 Chevrolet Corvette Stingray, with current fitment extending through 2026, plus specified E-Ray applications beginning in 2024.
What engine does 21801400 fit?
The application is for the 6.2L V8 C8 Corvette.
What size are the headers?
The headers use 1-7/8" equal-length primary tubes.
What are the headers made from?
Kooks uses 304 stainless steel construction with 3/8"-thick flanges.
Do these headers connect to the factory catalytic converters?
Yes. The flanged collector outlet is designed to connect directly to the OEM catalytic converters.
Can these headers be used with Kooks Ultra-GREEN connection pipes?
Yes. Kooks designed the headers to work with its Super Street OEM connection pipes, including the Ultra-GREEN configuration.
Is a tune required?
Kooks identifies the 21801400 as No Tune Required.
Are gaskets and hardware included?
Yes. Kooks states that the kit includes the required gaskets and bolt kit.
Does this fit the C8 Z06?
No. Kooks specifically excludes the C8 Z06 from 21801400.
Does this fit the C8 ZR1?
No. Kooks specifically excludes the C8 ZR1.
Does this fit the C8 Grand Sport?
No. Kooks specifically excludes the C8 Grand Sport.
Is the header sold as a set?
Yes. Current product specifications identify the quantity as a set.
***Kooks is a built to order manufacturer and their focus is providing the best quality parts available. While their typical lead time is 4-6 weeks, some products may take up to 12 weeks to produce.***
