Details
BrandKooks Headers
SKUKSH21803300
GTIN / UPC842422176853
Manufacturer Part Number21803300
Product Information
A pair of 3 in stainless connection pipes with Kooks Ultra-GREEN catalytic converters that replace the factory converters between the manifolds or headers and the factory cat-back. Each converter has a 304 stainless body and a 400-cell, 4-1/2 in diameter metallic substrate, and the flanged ends use the stock bolt pattern. No tune is needed on the 2020-2023 Stingray; Z06 owners need part 218133BK instead.
Specifications
| Type | Ultra-GREEN catted connection pipes |
| Pipe Diameter | 3 in |
| Material | Stainless steel |
| Catted or Catless | Catted: Kooks Ultra-GREEN converters, 400-cell 4-1/2 in metallic substrate, 304 stainless body |
| Removes / Keeps | Replaces the OEM catalytic converters; keeps the OEM cat-back |
| What's in the Box |
|
| Fitment Notes | Flanged inlet and outlet, stock bolt pattern. Inlet connects to OEM manifolds or Kooks headers. No tune required on 2020-2023 Stingray only. Not for Z06 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2025 | Chevrolet | Corvette | E-Ray, Stingray |
Shipping
- In stock orders typically ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
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