Walker is an OE supplier to many major nameplate vehicle manufacturers.
Trust Walker, an industry leader, for the finest emission control technologies for import and domestic vehicles.
Fits Like OE Because We Make OE.
Walker offers complete coverage: direct-fit mufflers, converters, pipes, resonators and accessories.
WALKER® EXHAUST SYSTEMS: e-Catalog

WALKER® EXHAUST SYSTEMS: VIN Search


WALKER® EXHAUST SYSTEMS: Universal Muffler Search

WALKER® EXHAUST SYSTEMS: Universal Converter Search
WALKER® EXHAUST SYSTEMS: Dealer Locator
WALKER® EXHAUST SYSTEMS: Part Search
WALKER® EXHAUST SYSTEMS: YouTube
WALKER® EXHAUST SYSTEMS: Walker Expert Plus® Program
WALKER® EXHAUST SYSTEMS: Support
WALKER® EXHAUST SYSTEMS: Understanding the Catalytic Converter
The function of any catalytic converter is to reduce harmful emissions generated by a properly-tuned engine. Learn more here.
A catalytic converter is a vital part of a vehicle emissions control system. It is designed to convert harmful engine emissions to CO2 and water. Learn more about how a catalytic converter works as well as the anatomy of a typical converter.

There are three types of catalytic converters: two-way converters, three-way plus air catalytic converters, and three-way converters. For the most part, each of these different converters came about because of emission regulations. Here is a summary of the catalytic converter evolution.

A catalytic converter has no moving parts. A converter cannot "wear out", but can become inert because of the accumulation of deposits, or through the physical damage caused by impact or overheating (misfire or fuel control faults).

Additional EPA converter information: EPA installation requirements, selecting a universal catalytic converter , and Engine Family Number (EFN) location.

Additional CARB converter information: CARB installation requirements and Engine Family Number (EFN) location.

Find immediate answers to our most frequently asked questions about emissions and catalytic converters.