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Vehicle Info NeededMAGNAFLOWPART NUMBER: 642-444058
California Grade CARB Compliant Direct-Fit Catalytic Converter 444058
$1,36700
Ships on 09/21/2026
Lowest Price Guarantee- Direct Fit California Catalytic Converter
- O.E. D-193-96
Magnaflow 444058 Features:
MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 444058 helps keep the check engine light off. DIY installation is easy with the proper tools (no cutting or welding required). With features including mandrel-bent tubing to eliminate flow restrictions and stainless steel construction to resist corrosion, you can have confidence in the quality of this catalytic converter. Using state-of-the-art 3D scanning systems in the design process, the MagnaFlow metrology department ensures this new part to fit and function like the original equipment. This direct-fit catalytic converter is designed specifically for the 2003-2004 INFINITI G35 and interchanges with OE parts 208B3-CG725 and 208B3-AC325, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.
MagnaFlow Direct-Fit California Emissions Catalytic Converters are designed to original equipment specifications for easy, bolt-on installation. These converters feature a ribbed body that minimizes expansion and distortion when heated up. The ribs form a channel that protects the cushioning mat from direct exposure to exhaust gases, and they hold the ceramic catalyst in proper alignment. Direct-Fit Catalytic Converts use a monolithic honeycomb catalyst with a ceramic coating that is designed for maximum flow and surface area. The coating method is strictly controlled to maintain exact specifications.
Note: These catalytic converters are legal for sale in the state of California.
Part TypeCatalytic Converter
Product LineMagnaflow Direct-Fit California Emissions Catalytic Converters
BrandMAGNAFLOW
Package Height6.5
Package Width7.63
Package Length32.0
Weight8.0 PG
Part CategoryPerformance Parts
Universal Or Specific FitSpecific
Outlet Size2.25 in (57.2 mm)
Cat Converter Air Tube AdapterNot Air Tube Kit Adaptable
Carb Eo NumberD-193-96 (pdf)
Converter Body SizeOEM
Oxygen Sensor LocationPre and Post Converter
Body SizeOEM
EmissionCalifornia
Overall Length21.1 in (535.9 mm)
Core Substrate MaterialCeramic
MaterialStainless Steel
Catalytic Converter FormatPre-Catalytic Converter and Main Catalytic Converter
Inlet Size (In.)2.25
California Air Board ApprovedYes
Substrate MaterialOEM
Exhaust Pipe MaterialStainless Steel
Body Length7.75 in (196.85 mm)
Exhaust Component Mount TypeUses Factory Hangers
Recommended UseConverter
Part FitmentDirect Fit
Vendor Part Number444058
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
