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Make your LS1 the star of your F-body
An LS1-powered Camaro or Firebird is a car you buy for the engine. These Kooks Race headers give your exhaust upgrade a purpose-made front section, with 304 stainless construction and a choice of primary size for the 1998-2002 5.7-litre application.
SKUs: 22412400, 22412600
Choose between the two primary sizes
22412400 has 1-7/8-inch primaries; 22412600 has 2-inch primaries. Both use 3-inch collectors and O2 fittings. The 2-inch 22412600 has no AIR or EGR fittings. 22412400 uses merge collectors; that collector design is confirmed for the 1-7/8-inch option.
Connect the whole exhaust
Use matching Kooks connection pipes or a full exhaust. Professional fitting should leave the O2 wiring, brake lines and fuel lines clear of the headers. If rear O2 sensors are retained and extensions are needed, purchase the rear O2 extensions separately.
Choose your configuration
| SKU | Configuration | Supplied arrangement | Fitting / engine conditions |
|---|---|---|---|
| 22412400 | Header Size: 1-7/8"; Includes Emissions Fittings: No | 1-7/8-inch primaries; 3-inch collectors; O2-only Race configuration | LS1 5.7L; Kooks connections or full exhaust; O2-only Race fittings |
| 22412600 | Header Size: 2"; Includes Emissions Fittings: No | 2-inch primaries; 3-inch collectors; O2-only Race configuration; no AIR or EGR fittings | LS1 5.7L; Kooks connections or full exhaust; O2-only Race fittings |
Tuning for your exhaust upgrade
We recommend tuning with every header installation so the calibration suits your headers, complete exhaust and fuel. Talk to us to discuss tuning for your vehicle and the parts you are fitting.
Matching products
For the 1998-2002 Camaro / Firebird LS1 5.7 header installation, choose the LS1 Y-pipe connections to join the front and rear exhaust.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 1998-2002 | Chevrolet Camaro Z28 | 5.7L V8 | 22412400, 22412600 | LS1 5.7L; Kooks connections or full exhaust; O2-only Race fittings |
| 1998-2002 | Chevrolet Camaro Z28 SS | 5.7L V8 | 22412400, 22412600 | LS1 5.7L; Kooks connections or full exhaust; O2-only Race fittings |
| 1998-2002 | Pontiac Firebird Formula | 5.7L V8 | 22412400, 22412600 | LS1 5.7L; Kooks connections or full exhaust; O2-only Race fittings |
| 1998-2002 | Pontiac Firebird Trans Am | 5.7L V8 | 22412400, 22412600 | LS1 5.7L; Kooks connections or full exhaust; O2-only Race fittings |
Intended use
22412400, 22412600: Competition, off-road and track use only. Not for use on public roads.
The competition-use waiver applies to 22412400, 22412600.
Ordering and delivery
Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.
Technical specifications
| Specification | Details |
|---|---|
| SKUs | 22412400, 22412600 |
| Application | 1998-2002 Camaro / Firebird LS1 5.7L |
| 22412400 primary diameter | 1-7/8-inch |
| 22412600 primary diameter | 2-inch |
| Collector diameter | 3-inch |
| Fittings | O2 fittings only; Race version |
| 22412600 emission fittings | No AIR or EGR fittings |
| Required exhaust parts | Kooks connection pipes or full exhaust |
| 22412400 collector design | Merge collectors |
| Rear O2 extensions | Purchased separately if the rear sensors are retained and extensions are required |
| Material | 304 stainless steel |
Frequently asked questions
Which size should I buy?
Choose around the engine specification and intended use. We can help compare 1-7/8-inch 22412400 and 2-inch 22412600 for your complete exhaust.
Do these connect directly to the factory front pipes?
They require matching Kooks connection pipes or a full exhaust. The 3-inch collector interface is for that matching connecting section.
