Walker Exhaust

It depends on where the vehicle is registered and how it was built. Walker lists California, New York, and Colorado as requiring CARB-compliant converters for all model years, and Maine for 2001 and newer vehicles, while most other states accept converters that meet federal EPA standards. Check the emissions label under your hood to see whether your vehicle is California-certified, and confirm a converter's compliance on its product page before you buy. A CARB-compliant converter carries an Executive Order number stamped on its body.

More than 3,800 Walker exhaust parts, including catalytic converters, mufflers, exhaust pipes, resonators, tail pipes, and exhaust gaskets. Catalytic converters are the largest line, with 945 of them.

Not always. Walker notes that a P0420 low efficiency code does not always mean the converter needs to be replaced, since on newer vehicles the code can appear when the exhaust gases reaching the converter are out of balance. Correct any misfire, mass air flow, rich or lean, and oxygen sensor codes first, repair exhaust leaks, and confirm the oxygen sensors are working before you install a new catalytic converter.

Walker says converters are designed to last the life of the vehicle under normal conditions. The common causes of failure are physical damage from corrosion or road debris, contamination from burning oil, an internal coolant leak, or heavy carbon buildup, a melted substrate from engine misfires, and cold-quenching from driving through deep water or snow. Fix the root cause first, or the new converter can fail the same way.

Direct-fit parts are designed to bolt on your vehicle, matching the size, shape, and hanger placement of the original, with no welding or fabrication. Universal parts fit a range of vehicles but usually need cutting, welding, or new hangers to install. Direct fit is the easier choice for most daily drivers, while universal parts suit custom, performance, and vintage vehicles or cases where no direct-fit part exists.

Walker points to three signs: a louder exhaust note from the back of the vehicle, lower gas mileage as the engine works harder, and exhaust fumes getting into the cabin. Fumes in the cabin are a safety concern, so have the exhaust checked right away. Browse every Walker muffler we carry.

Fitment is set part number by part number, so your own vehicle is the only reliable test. Add your year, make, and model with the Search by Vehicle tool, then check the fitment confirmation on the product page before the part goes in your cart.

Walker handles warranty claims through the retailer where the part was purchased, so for a Walker part bought here, start with us. Coverage depends on the part, so reach our team through the Contact Us page with your order details.