8 Fairfax St SE
NAPA Auto Parts Genuine Parts Company
8 Fairfax St SE
Leesburg,  VA  20175
(703) 777-2055
Reserve Online Participant
Store Hours
Mon-Fri:7:30 AM-7:00 PM
Sat:8:00 AM-5:00 PM
Sun:9:00 AM-5:00 PM
This store has been geolocated for you.
Looking to get a repair done? Find an AutoCare Center

MagnaFlow Heavy Metal Catalytic Converter
Added To Cart

MagnaFlow Heavy Metal Catalytic Converter

Part #: MAG 99356HM
Line: MagnaFlow Exhaust

This item is currently not at your store, but is available for order. Please call store to verify the specific location and delivery details for this item. Note that additional shipping charges may be required.

Requested quantity is not available. Please update the quantity below.
Sorry, this item is not available in your region

Recommended Items   

Features & Benefits

Warranty: Standard : See Manufacturer's Complete Written Policy


MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99356HM helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design (cutting and welding is required). With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter.

This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.

  • Engineered to keep the Check Engine light off
  • CNC precision robotic manufacturing
  • Meets or exceeds EPA emissions requirements


Inlet Count Single
Sub Brand Heavy Metal
VMRS Code 043-006-020
Body Length 11
Outlet Diameter Designation Inside Diameter
Inlet Diameter 2.5
Manufacturer MagnaFlow
Outlet Connection Type Weld-On
Outlet Count Single
SDS Required No
Finish Steel
Inlet Configuration One Piece
Reversible Yes
Air Connection No
Body Shape Round
Body Type Round
Inlet Connection Type Weld-On
Oxygen Sensor Location Midbed
Outlet Diameter 2.5
Manufacturer Part Number 99356HM
Overall Length 15
Material Acrylic
Inlet Diameter Designation Inside Diameter
Brand MagnaFlow
Body Width 4.25
Substrate Material Ceramic
Body Height 4.375
California Air Resources Board (CARB) Certified No
Outlet Configuration One Piece

Safety Information

Vehicle Fitment Guide

Product Reviews