MagnaFlow
Direct-Fit HM Grade Federal (Exc. CA)

MagnaFlow 23721 Catalytic Converter

Brand MagnaFlow 23721
Mounting Hardware Included Yes
Universal Or Specific Fit Specific
Grade Type Regular
Tube Material Stainless steel
Inlet Type Bolt-on
Outlet Type Weld-on
Heat Shield Attached Yes
Body Material Stainless steel
Substrate Material Ceramic
Inlet Gasket Included No
Inlet Mounting Hardware Included No
Outlet Mounting Hardware Included No
Overall Length 38.75
Air Tube Count 0
Air Tube Adaptable No
Clamp Included No
Converter Quantity 1
Finish Stainless steel
Hangers Included No
Heat Shield Material Aluminized steel
Oxygen Sensor Location Pre and post converter
Series Hm grade
Subtitle Federal / epa compliant
Title Hm grade direct-fit
Type Direct-fit
Product line Direct-Fit HM Grade Federal (Exc. CA)
Fits Chrysler · 2 vehicles

Direct-fit design. Installs without cutting or welding when using the proper tools.

Stainless steel construction. Helps resist corrosion for lasting durability.

Federal / EPA compliant. Meets emissions requirements for legal use on registered vehicles.

Cross-references 4546 254AC, 5278 026AC and 4546254AC for the same application. See all 4.

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Direct-Fit Catalytic Converter for Sebring

MagnaFlow 23721 is a direct-fit HM Grade catalytic converter for the 1999-2000 Chrysler Sebring with Federal/EPA emissions systems. It is built for bolt-on installation at the inlet and uses stainless steel construction to resist corrosion while helping maintain proper exhaust flow and OBDII performance.

The MagnaFlow HM Grade Direct-Fit line is engineered for OE-style replacement applications, using 3D scanning during development to match original fit and function. For the 1999-2000 Chrysler Sebring, this part cross-references OE numbers 4546 254AC and 5278 026AC.

Key Features

  • Direct-fit design for 1999-2000 Chrysler Sebring
  • Federal/EPA compliant for OBDII federally registered vehicles with Federal/EPA emission systems
  • Stainless steel body and tubing for corrosion resistance
  • Mandrel-bent tubing to reduce exhaust flow restriction
  • Ceramic substrate with pre- and post-converter oxygen sensor locations
  • Heat shield attached for added thermal protection
  • Includes gaskets to help achieve a proper exhaust seal

Detailed Description

MagnaFlow catalytic converter 23721 is designed for the Chrysler Sebring 1999-2000 and is built as a specific-fit replacement for Federal emissions applications outside California. The HM Grade Direct-Fit configuration supports OE-style installation and is shaped to align with the original exhaust layout, helping reduce the need for fabrication. Its stainless steel construction, ceramic substrate, and integrated heat shield are selected for durability in everyday exhaust service.

This part is intended for drivers replacing a worn or failed converter on a 1999 Chrysler Sebring or 2000 Chrysler Sebring with Federal/EPA emissions equipment. The included gaskets help support a proper seal at installation, reducing the chance of exhaust leaks at the connection points. Part number 23721 also matches OE references 4546 254AC and 5278 026AC.

What It Helps Fix

  • Check engine light caused by catalytic converter efficiency faults
  • Failed emissions inspection related to converter performance
  • Exhaust leaks at the converter connection points
  • Restricted exhaust flow from a deteriorated converter
  • Corrosion-related converter housing damage

Installation Notes

Fits 1999-2000 Chrysler Sebring, N/A. This is a direct-fit converter with a bolt-on inlet and weld-on outlet, so proper tools are required for installation. No cutting or welding is required for the full replacement process when installed as designed, but the exhaust system should be inspected for alignment and sealing surfaces before installation. Use the included gaskets to help achieve a secure seal.

Quality Assurance

MagnaFlow uses 3D scanning in the design process to help the part fit and function like the original equipment. MagnaFlow 23721 is built to meet or exceed Federal emissions requirements set by the EPA for the listed application.

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeLitersCylindersPositionNotes
2000ChryslerSebringConvertible2.5LV6N/ADirect-Fit HM Grade Federal (Exc. CA)
1999ChryslerSebringConvertible2.5LV6N/ADirect-Fit HM Grade Federal (Exc. CA)
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
4546 254AC5278 026AC4546254AC5278026AC