{"id":182031,"date":"2025-09-12T18:27:48","date_gmt":"2025-09-13T01:27:48","guid":{"rendered":"https:\/\/www.carparts.com\/blog\/?p=182031"},"modified":"2025-09-12T18:27:51","modified_gmt":"2025-09-13T01:27:51","slug":"what-does-a-catalytic-converter-look-like-on-a-car","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/what-does-a-catalytic-converter-look-like-on-a-car\/","title":{"rendered":"What Does a Catalytic Converter Look Like On a Car?"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>\n<div class=\"summary-widget\">\n    <h3>Summary<\/h3>\n    <ul class=\"summary-grid\">\n            <li class=\"summary-grid-list\">\n            <div class=\"sm-item\">\n\n                                    <p class=\"sm-title\">\n                        A catalytic converter looks like a cylindrical metal container with a pipe on each end, similar to a muffler, and often has a heat shield.                    <\/p>\n                \n            <\/div>\n        <\/li>\n            <li class=\"summary-grid-list\">\n            <div class=\"sm-item\">\n\n                                    <p class=\"sm-title\">\n                        Inside, it has a honeycomb structure coated with palladium, rhodium, and platinum that react with exhaust gases.                    <\/p>\n                \n            <\/div>\n        <\/li>\n            <li class=\"summary-grid-list\">\n            <div class=\"sm-item\">\n\n                                    <p class=\"sm-title\">\n                        It sits between the engine and muffler, with one or more units placed along the exhaust system before the muffler.                    <\/p>\n                \n            <\/div>\n        <\/li>\n        <\/ul>\n<\/div>\n\n\n\n\n\n<p><strong>A <a href=\"https:\/\/www.carparts.com\/catalytic-converter\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"catalytic converter\">catalytic converter<\/a> often looks like a cylindrical metal container with a metal pipe sticking out of each end and will usually include a <a href=\"https:\/\/www.carparts.com\/catalyst-heat-shield\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"heat shield\">heat shield<\/a>. It looks like a <a href=\"https:\/\/www.carparts.com\/muffler\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"muffler\">muffler<\/a> with a pipe on both ends.&nbsp;<\/strong><\/p>\n\n\n\n<p>From the inside, the catalytic converter has a <a href=\"https:\/\/www.carparts.com\/blog\/how-to-unblock-a-catalytic-converter\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"honeycomb-like structure\">honeycomb-like structure<\/a> that&rsquo;s coated with precious metals like palladium, rhodium, and platinum, which help convert exhaust emissions into less harmful substances.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"367\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2025\/09\/light-off-catalyst-and-oxidation-catalyst-1024x367.jpg\" alt=\"light off catalyst and oxidation catalyst\" class=\"wp-image-182032\"><figcaption class=\"wp-element-caption\">Typically, there will be a light-off catalyst for each bank of cylinders very near the engine and one or two secondary oxidation catalysts farther back on the exhaust system. The muffler will be after the catalyst as you follow the exhaust system toward the rear of the vehicle. These photos show both catalysts on the same four-cylinder vehicle. | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Tips On How to Access the Catalytic Converter<\/h2>\n\n\n\n<p>The catalytic converter sits between the engine and muffler, so you&rsquo;ll need to raise your vehicle to get a better view.<\/p>\n\n\n\n<p>If you&rsquo;re planning to remove your old catalytic converter, make sure that the engine has cooled down completely. Note that, in many cases, the catalytic converter is part of the <a href=\"https:\/\/www.carparts.com\/blog\/exhaust-system-parts-101-the-basics-diagram-included\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"exhaust system\">exhaust system<\/a> and it may be difficult to remove, so don&rsquo;t get in over your head if you haven&rsquo;t done a lot of wrench work.<\/p>\n\n\n\n<p>Catalytic converters are often attached to the vehicle using bolts, which you can loosen with the help of penetrating oil and a trusty wrench.&nbsp;<\/p>\n\n\n\n<p>Also, make sure to remove the rear bolts first before the ones in front.<\/p>\n\n\n\n<p><\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>A catalytic converter often looks like a cylindrical metal container with a metal pipe sticking out of each end and&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/what-does-a-catalytic-converter-look-like-on-a-car\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1651,"featured_media":121272,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":true,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1034,52,3750],"tags":[1189],"ppma_author":[2607,2985],"class_list":{"0":"post-182031","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-auto-repair","8":"category-diy","9":"category-exhaust-system","10":"tag-catalytic-converter-2","11":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Does a Catalytic Converter Look Like On a Car? - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"The catalytic converter looks pretty simple from the outside and is fairly easy to locate. 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