MagnaFlow 337487 Catalytic Converter - Front

California Grade Direct-Fit Converter for Corvette

MagnaFlow 337487 is a California Grade, CARB-compliant direct-fit catalytic converter for the 1986-1991 Chevrolet Corvette, front position. It is built with stainless steel construction, a ceramic substrate, and OE-style spun body design to support proper exhaust flow and factory-style fitment.

For Corvette owners needing a front catalytic converter replacement, this MagnaFlow direct-fit unit is engineered for bolt-on installation with no cutting or welding required. The design uses mandrel-bent tubing, a single laser fusion weld, and a compact low-mass layout to help maintain thermal efficiency and reduce leak points.

Key Features

• Fits 1986-1991 Chevrolet Corvette, front
• MagnaFlow Direct-Fit CALIFORNIA PRE-OBDII CONVERTERS line
• CARB-compliant replacement for listed California and CARB-restricted applications
• Stainless steel body and tubing for corrosion resistance
• Ceramic substrate construction
• Bolt-on inlet with clamp-on outlet
• Mounting hardware, inlet gasket, and clamp included
• Specific-fit design for OE-style replacement
• Part number 337487

Product Details

MagnaFlow 337487 is built for the 1986-1991 Chevrolet Corvette and follows the brand’s direct-fit California pre-OBDII converter platform. MagnaFlow uses 3D scanning during development to match original equipment dimensions and function, and the spun body design helps replicate the factory layout. This front catalytic converter is a practical choice for a Chevrolet Corvette catalytic converter replacement when CARB compliance is required.

The unit measures 47.375 inches overall, uses 3-inch main piping, and includes two converter assemblies. With no oxygen sensor ports, no air tube provisions, and no heat shield attached, the design stays focused on the original exhaust configuration for the listed Corvette applications. Part number 337487 is also identified by the same application-specific direct-fit platform.

Common Reasons for Replacement

• Check engine light related to catalytic converter efficiency or exhaust flow
• Corrosion or damage to the original front converter assembly
• Exhaust leaks at the converter body or joints
• Failed emissions inspection on a 1986-1991 Chevrolet Corvette
• Need for a CARB-compliant direct-fit catalytic converter

Installation Notes

This direct-fit catalytic converter is designed for bolt-on installation using proper tools, with no cutting or welding required. It is made for the front position on the listed Corvette years, so verify the vehicle configuration before installation. The included hardware, inlet gasket, and clamp help simplify replacement of corroded factory components.

Quality Assurance

MagnaFlow develops this converter using 3D scanning and OE-style design validation to support fit and function on the listed Chevrolet Corvette applications. It is built to meet or exceed California Air Resources Board requirements and has undergone additional testing for CARB-guideline compliance on the specified vehicles.