MagnaFlow 4583370 California CARB Compliant Direct-Fit Manifold Catalytic Converter

The MagnaFlow 4583370 is a California Grade CARB compliant direct-fit manifold catalytic converter engineered as a precise OEM replacement. This unit integrates the functions of both the exhaust manifold and catalytic converter into a single assembly, mounting directly to the engine's cylinder block as the starting point of the exhaust system — eliminating the need to source two separate components.

Designed to meet the strict emissions requirements set by the California Air Resource Board (CARB), this converter is legal for sale and installation in all 50 states, including California, Colorado, New York, and Maine. Installation is permitted only when the vehicle's Executive Order number and Engine Family Number appear in this converter's applicable CARB Executive Order.

Key Features:

• CARB Compliant — Meets California Air Resource Board emissions standards; legal in all 50 states including CARB-regulated states
• Integrated Manifold Design — Combines exhaust manifold and catalytic converter into one direct-fit unit for simplified replacement
• Direct-Fit Installation — Bolt-on replacement requiring no cutting or welding
• OEM-Grade Construction — Engineered to replicate the original equipment design for proper fitment and function
• Stainless Steel Construction — High-strength stainless steel tubing for superior corrosion resistance and long service life
• Spun Body Design — Single laser fusion weld minimizes leak points and improves thermal efficiency
• 3D-Scanned Fitment — Developed using MagnaFlow's metrology department and advanced 3D scanning for precise OE-matching fit

The MagnaFlow 4583370 is built to keep your check engine light off and your vehicle passing emissions inspections. As a true direct-fit manifold catalytic converter, it restores proper exhaust flow and emissions performance without requiring fabrication or custom adapters. Always verify that your vehicle's Executive Order number matches this converter's CARB Executive Order prior to installation.