




Great news – on this purchase, you'll enjoy a BuildBUX bonus of $9.25.
Product Fitment:
2010-2014 Subaru WRX
2008-2014 Subaru STI
Restore your vehicle’s emissions performance and keep your check engine light off with the MagnaFlow California Grade CARB Compliant Catalytic Converter (Part #5421012). Designed as a direct-fit OEM replacement, this high-quality converter features stainless steel construction, mandrel-bent tubing, and no cutting or welding required—making it ideal for DIY installation.
This unit is engineered to meet California Air Resources Board (CARB) standards, making it fully legal for use in California and CARB-restricted states. It includes gaskets and hardware to ensure a secure, leak-free seal and proper installation.
Key Features:
CARB Compliant – Meets strict emissions regulations for legal use in CA and other CARB-regulated states
Direct-Fit Design – Bolt-on replacement with no cutting or welding required
Mandrel-Bent Tubing – Eliminates flow restrictions to maximize exhaust efficiency
Durable Stainless Steel Construction – Resists corrosion for long-lasting performance
Precision Fitment – Designed using advanced 3D scanning for OEM-like fit and function
Leak-Free Installation – Includes necessary gaskets and hardware for a secure seal
Specifications:
Series: California
Body Material: Stainless Steel
Body Type: Clam-Shell
Inlet/Outlet Type: Bolt-On
Hardware Kit: Included
Donut Gasket & Flange Gasket: Included
Hangers: Included
Clamps: Not Included
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