“CORVETTE C8 6.2 KAT Catalytic Converter Kit
Complete Catalytic Converter Kit” for the C8 Corvette Stingray (6.2L LT2) should include not just the converters themselves, but the critical mounting hardware and gaskets required for a professional, leak-free installation.
For your inventory at Buy Mustang parts Ltd, accuracy in part numbering for the “Global B” architecture (2020–2026) is essential.
1. OEM “Kit” Components & Part Numbers
While GM often sells these items individually, a commercial “kit” is composed of these primary OEM numbers:
| Component | Position | OEM Part Number | Notes |
| Catalytic Converter | Left (Driver) | #84931345 | Includes integrated heat shielding. |
| Catalytic Converter | Right (Pass) | #84931346 | Includes integrated heat shielding. |
| Upper Gasket | Both Sides | #12672379 | Manifold-to-Converter (Requires 2). |
| Lower Gasket (LH) | Left Only | #10354707 | Converter-to-Exhaust (2-bolt style). |
| Lower Gasket (RH) | Right Only | #23194206 | Converter-to-Exhaust (3-bolt style). |
2. Performance “Sport Cat” Alternatives
Many luxury clients prefer High-Flow Sport Catalysts. These provide a more aggressive exhaust note and horsepower gains (approx. +20 HP) while remaining bolt-on compatible with the stock 6.2L engine.
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Corsa Performance High Flow Cats: A popular mid-range option. Features 300-cell substrates and a 9% flow increase over stock.
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Fabspeed Sport Catalytic Converters: The premium choice for luxury builds. Uses German HJS 200-cell tri-metallic cores and includes military-grade heat blankets.
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EOS (Extreme Online Store) Kit: Often used as a high-quality “Direct Replacement” for damaged stock units, featuring T-304 stainless steel at a more accessible price point.
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