Walker Exhaust Ultra EPA 50553 Direct Fit Catalytic Converter
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$563.99at Advance Auto PartsChecked Nov 9
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Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
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The Walker Ultra EPA 50553 is a direct-fit, bolt-on catalytic converter for 1996-and-newer OBDII cars. It uses an OE-style wash coat and precious metal load aimed at keeping emissions codes and the check engine light off, with stainless steel body and OE-style flanges, hangers and heat shields. It suits owners replacing a failed converter on a stock or lightly modified car who want a straightforward bolt-on fit rather than a universal weld-in unit. Owners report easy installation and a precise fit on many applications, but some say it did not fit vehicles listed as compatible and that it is noisy or brings no power gain.
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Lowest price we've seen: $563.99 on Nov 9 at Advance Auto Parts. Tracked across 1 store since Nov 9.
Owners who got a good fit call it well made and easy to bolt on, with a sound they like. Others report fitment problems on vehicles listed as compatible, a difficult coupler, and no real power gain.
The Walker Exhaust Ultra EPA 50553 is a direct-fit catalytic converter for cars. It is a bolt-on replacement built to match the original design, with OE-style hangers, brackets, routings and heat shields. It is EPA compliant for OBDII vehicles from 1996 and newer.
The body is round stainless steel with a ceramic substrate. The flanges, hangers and brackets are thick and OE-style. Aluminized heat shields are included when the original part was equipped with them. The OE-style wash coat and precious metal load help keep the check engine light off for emissions codes.
