MagnaFlow 4451453 Catalytic Converter

California OBDII Direct-Fit Converter

MagnaFlow 4451453 is a California Grade, CARB-compliant direct-fit catalytic converter built for specific GM truck and SUV applications. It is engineered to help keep the check engine light off while matching OE-style fitment for a straightforward replacement on the 1996-2000 Chevrolet Tahoe, 1996-1999 Chevrolet K1500, and other listed vehicles.

MagnaFlow’s Direct-Fit CALIFORNIA OBDII CONVERTERS line focuses on application-specific replacement parts that install without cutting or welding when used with the proper tools. The spun-body design, stainless steel construction, and mandrel-bent tubing are selected to support durability, thermal efficiency, and a secure seal.

• CARB-compliant replacement catalytic converter for California and CARB-restricted states on listed vehicles
• Direct-fit design for OE-style installation
• Stainless steel body and tubing for corrosion resistance
• Ceramic substrate for emissions control
• Spun-body construction with a single laser fusion weld to reduce leak points
• Includes gaskets and hardware for sealing and installation support
• Bolt-on inlet for easier replacement service

Fitment and Application Details

Fits 1996-2000 Chevrolet Tahoe, N/A; fits 1996-1999 Chevrolet K1500, N/A; and fits additional listed Cadillac, Chevrolet, and GMC applications from 1996-2000. For search relevance, this MagnaFlow catalytic converter 4451453 is a direct replacement choice for drivers looking for a 1999 Chevrolet Tahoe catalytic converter, a 1998 GMC Yukon catalytic converter, or a 2000 Chevrolet C2500 catalytic converter with CARB compliance.

What It Helps Address

• Check engine light caused by a failed or inefficient catalytic converter
• Emissions test failure related to converter performance
• Corrosion damage on the original exhaust converter assembly
• Exhaust leaks at worn factory sealing surfaces
• Poor OE fit from universal-style replacement parts

Installation Notes

Use the proper tools for a bolt-on installation. No cutting or welding is required for the direct-fit design. The included gaskets and hardware help avoid reusing corroded factory fasteners and sealing components. Verify exact emissions certification and engine-family coverage against the vehicle’s application notes before installation.

Quality Assurance

MagnaFlow uses 3D scanning during development to match original equipment dimensions and function. The OE-style spun body design and laser fusion weld are used to improve sealing integrity, while the compact low-mass construction supports thermal efficiency. This part is built to meet or exceed California Air Resources Board requirements for the listed applications.