Davico 18406 Catalytic Converter - Center

Exact-Fit Catalytic Converter

Davico 18406 is an exact-fit catalytic converter built from original equipment sample parts to match fit and function on the vehicle. It uses an emissions-reducing catalyst formulated for OBDII applications and features a 4-bolt fixed flange inlet with a slip-fit outlet.

• Exact-fit design based on OE sample parts for proper fitment.
• Emissions-reducing catalyst for OBDII exhaust systems.
• 4-bolt fixed flange inlet and slip-fit outlet for direct exhaust connection.
• Includes provisions for 2 oxygen sensors.

Fitment

Compatible with center exhaust applications on 2006-2008 Audi A3, 2007-2008 Volkswagen Eos, 2006-2008 Volkswagen GTI, and 2006-2008 Volkswagen Jetta. Not legal for use in California; illegal for installation in New York on vehicles equipped with California emission systems.

Fits 2006-2008 Audi A3, center. Fits 2007-2008 Volkswagen Eos, center. Fits 2006-2008 Volkswagen GTI, center. Fits 2006-2008 Volkswagen Jetta, center.

Product Details

This Davico Exact-Fit Catalytic Converter is part number 18406 and is intended for buyers replacing a center catalytic converter on select Audi and Volkswagen models. The 66-inch overall length, 16-inch width, and 8.5-inch height reflect the packaged assembly dimensions, while the unboxed format and OE-based design support a straightforward exhaust replacement. Part number 18406 is also referenced by installers looking for Davico 18406 in exact-fit exhaust applications.

What It Helps Address

• Failed catalytic converter efficiency codes.
• Restricted exhaust flow from a worn converter.
• Emissions test failures tied to catalyst performance.
• Oxygen sensor-related exhaust system faults.

Installation Notes

Verify emissions legality before installation, especially for California and New York regulated vehicles. Confirm the 4-bolt fixed flange inlet and slip-fit outlet match the existing exhaust configuration, and check oxygen sensor count and center-position fitment before beginning service. Davico also notes use of decarbonizing induction kit 1540ea with this application.

Quality Assurance

Davico designs Exact-Fit Catalytic Converters from original equipment sample parts and uses a high-quality emissions-reducing catalyst to meet OBDII vehicle demands. This part cross-references no listed interchange numbers for the same application.