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SKU: GE-90148 | UPC: 842422180119
Kooks GE-90148 3" GREEN High-Flow 400-Cell Metallic Catalytic Converter (Universal)
The Kooks 3-inch GREEN high-flow catalytic converter delivers 49-state emissions compliance with maximum exhaust flow for Kooks header and connection pipe systems, featuring a 400-cell metallic substrate that provides superior heat resistance and durability compared to ceramic cores while maintaining quick light-off and low restriction for gains of 10–20 HP when replacing restrictive factory cats. This universal converter is designed for direct integration into 3-inch stainless exhaust systems with 3-inch slip-fit inlets/outlets.
Constructed with a spun stainless steel body and 400-cell metallic monolith rated to 1,800°F, the GE-90148 resists cracking, melting, or substrate collapse even in boosted or high-EGT applications up to 1,000+ HP. The GREEN designation ensures compliance with EPA standards while flowing significantly better than OEM 600–900 cell cats, making it the perfect choice for performance builds that still need to pass tailpipe emissions testing.
For builders demanding the strongest, most reliable high-flow catalytic converter that meets 49-state regulations, the Kooks GE-90148 GREEN cat is the proven solution trusted in thousands of Kooks exhaust systems worldwide.
Key Features
- 3-inch inlet/outlet with slip-fit connections
- 400-cell metallic substrate for extreme durability
- 49-state EPA compliant GREEN high-flow cat
- Spun stainless steel body resists 1,800°F+
- Flows 10–20 HP better than factory 600–900 cell cats
- Universal fit for 3-inch exhaust systems
Product Notes
- 49-state legal – not CARB approved for California
- Sold individually – most vehicles require 2
- Direct replacement for Kooks GREEN catted pipes
California Proposition 65: Contains chemicals known to the State of California to cause cancer or reproductive harm.
Warranty: Limited lifetime on body, 25,000 miles on substrate to original purchaser.
Installation Notes
- Professional installation recommended
- Slip-fit or weld into 3-inch exhaust system
- Use high-temp anti-seize on clamps
- Run 100-mile drive cycle for ECU adaptation
This Part Fits
| Application | Pipe Diameter |
|---|---|
| All Kooks 3" Exhaust Systems | 3" Inlet/Outlet |
| Universal High-Flow Cat Replacement | 3" Slip-Fit |
Note: Universal 3-inch GREEN high-flow catalytic converter. Verify length and fitment.
What's Included in the Purchase
- (1) 3" GREEN 400-Cell Metallic Catalytic Converter
- Part Number: Kooks GE-90148
Why Choose Kooks?
- Over 60 years of championship-winning exhaust engineering
- Only factory-spec GREEN cats for Kooks systems
- Limited lifetime body warranty
Frequently Asked Questions
-
Q: Is this CARB legal?
A: No, 49-state only – CARB EO required for CA -
Q: Metallic vs ceramic?
A: Metallic = higher heat tolerance, no cracking -
Q: How many needed?
A: Most V8 applications use 2 (one per bank)
Shipping & Handling
- Method: UPS or Fed Ex Ground.
- Availability: Typically ships same day or next if in stock.
- Packaging: Protective retail box.
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