Kooks 3" High Output GREENCATS catalytic converter — the H.O. variant uses a 300 CPSI substrate (vs. standard 400 CPSI) for lower restriction at higher flow rates. The right pick for high-power supercharged or turbocharged builds that demand more flow than the standard cat provides.
Fits 3" exhaust applications. EPA certified. Lower substrate density means less restriction at the cost of slightly less emissions reduction — still meets EPA standards but optimized for high-output flow.
Kooks Headers & Exhaust has been hand-building stainless headers and exhaust systems in Statesville, North Carolina since 1962. Every catalyst is built to Kooks' specifications in the same shop where the company's racing roots were established.
3" ID inlet and outlet, 4" long catalyst, 4-1/2" OD body, 7" overall length, 300 CPSI high-flow substrate.
