Eastern Convertors 40491 Catalytic Converter - Rear

Direct-Fit Catalytic Converter for Hyundai

Eastern Convertors 40491 is a Federal / EPA direct-fit undercar catalytic converter built to match OE dimensions for a precise replacement. It is engineered for rear-position applications on select Hyundai Tiburon and Hyundai Elantra models, with a 2-bolt welded inlet and outlet, one O2 sensor port, and standard catalyst construction.

The DIRECT FIT product line focuses on OE-style fitment and consistent installation geometry. For buyers searching for a rear catalytic converter for 2003-2006 Hyundai Tiburon or 2001-2003 Hyundai Elantra, part number 40491 provides a direct replacement format without requiring custom fabrication.

Key Features

• Federal / EPA direct-fit undercar catalytic converter
• Built to OE dimensions for factory-style fitment
• Standard catalyst type
• 2-bolt welded inlet and outlet connections
• One O2 sensor port
• Overall length: 42.5 in.
• Inlet gasket and outlet gasket locations specified for direct replacement use

Fitment Details

• Fits 2003-2006 Hyundai Tiburon, rear, undercar; not for sale or use in CA, CO, ME, or NY for vehicles with CA emissions.
• Fits 2001-2003 Hyundai Elantra, rear, undercar; not for sale or use in CA, CO, ME, or NY for vehicles with CA emissions.

What This Part Helps Address

• Failed catalytic converter emissions testing
• Check engine light concerns related to catalyst efficiency
• Restricted exhaust flow from a worn or damaged converter
• Exhaust leaks at the converter connection points
• Replacement needs for a rear undercar converter on select Hyundai models

Installation Notes

Confirm vehicle emissions certification before ordering, since this part is not legal for sale or use in California, Colorado, Maine, or New York for vehicles with CA emissions. Verify rear-position undercar fitment, O2 sensor port location, and 2-bolt welded connection style against the original converter before installation. Part number 40491 is intended for direct replacement use on the listed Hyundai Tiburon and Hyundai Elantra applications.

Quality Assurance

Eastern Convertors uses advanced manufacturing methods, including automated workstations, spinner welding equipment, and high-speed production lines, to maintain OE-style dimensions and fitment consistency. The converter also uses proprietary NANO substrate chemistry to support efficient catalyst loading and cost-effective performance. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.