{"id":40661,"date":"2022-09-15T02:52:00","date_gmt":"2022-09-15T09:52:00","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=40661"},"modified":"2024-06-17T20:22:22","modified_gmt":"2024-06-18T03:22:22","slug":"a-guide-to-flex-pipes-function-symptoms-replacement-and-more","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/a-guide-to-flex-pipes-function-symptoms-replacement-and-more\/","title":{"rendered":"A Guide to Flex Pipes: Function, Symptoms, Replacement, and More"},"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\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_e0522b-9d > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_e0522b-9d > .kt-inside-inner-col,.kadence-column_e0522b-9d > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_e0522b-9d > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_e0522b-9d > .kt-inside-inner-col{flex-direction:column;}.kadence-column_e0522b-9d > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_e0522b-9d > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_e0522b-9d{position:relative;}@media all and (max-width: 1024px){.kadence-column_e0522b-9d > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_e0522b-9d > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_e0522b-9d qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-38ab41  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-f42d1d\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_6b6b3c-88, .wp-block-kadence-advancedheading.kt-adv-heading_6b6b3c-88[data-kb-block=\"kb-adv-heading_6b6b3c-88\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_6b6b3c-88 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_6b6b3c-88[data-kb-block=\"kb-adv-heading_6b6b3c-88\"] mark.kt-highlight{font-family:Inter;font-weight:500;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading_6b6b3c-88 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_6b6b3c-88[data-kb-block=\"kb-adv-heading_6b6b3c-88\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_6b6b3c-88 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_6b6b3c-88\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>Also known as the exhaust flex pipe, the flex pipe is a type of tubing that connects the engine and exhaust system.<\/li><li>Some of the common symptoms of a bad flex pipe are exhaust leaks, loud noises from your engine, and hissing noises when you step on the gas pedal.<\/li><li>It isn&rsquo;t safe to drive around with a bad flex pipe because it can damage other parts of your vehicle.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>At first glance, the flex pipe doesn&rsquo;t seem special aside from being more flexible than other pipes in the exhaust system.<\/p>\n\n\n\n<p>But like any other exhaust part, it contributes a lot to how well your ride performs on the road. When a flex pipe wears out or breaks down, it can cause serious problems for your vehicle. Read on to learn about its role in 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 the common signs of failure you should watch for.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is a Flex Pipe?<\/h2>\n\n\n\n<p><strong>The flex pipe is a type of tubing that connects the engine and exhaust system<\/strong>. Also called the exhaust flex pipe, it is made from strong yet malleable materials like steel alloy.<\/p>\n\n\n\n<p>Aside from connecting the engine and exhaust system and transporting exhaust gases, the flex pipe absorbs the vibrations produced by your vehicle when you&rsquo;re driving. By keeping the exhaust system from shaking too much, the pipe helps other exhaust parts last longer.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/flex-pipe-isolated-background-white-1024x602.jpg\" alt=\"flex pipe isolated background white\" class=\"wp-image-41878\" width=\"1024\" height=\"602\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/flex-pipe-isolated-background-white-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/flex-pipe-isolated-background-white-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/flex-pipe-isolated-background-white-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/flex-pipe-isolated-background-white-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/flex-pipe-isolated-background-white-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/flex-pipe-isolated-background-white.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The flex pipe absorbs the vibrations produced by your vehicle when you&rsquo;re driving.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What Are the Symptoms of a Bad Flex Pipe?<\/h2>\n\n\n\n<p>Like any other piece of metal, even though a flex pipe is made to flex for the life of the vehicle, flex pipes can fail over time due to continual flexing. While flex pipes can handle vibrations much better than other exhaust pipes, years of absorbing every bump and shake can make them crack. They can also get damaged when your vehicle bottoms out to the point that the pipes hit or scrape against the road surface.<\/p>\n\n\n\n<p>Damaged and worn-out flex pipes are prone to exhaust leaks. The exhaust gases produced by the engine can escape through cracks in the pipe.<\/p>\n\n\n\n<p>You may also hear loud noises coming from leaky flex pipes. Your engine will sound louder than normal because the sounds produced by its operation escape through the cracked pipe. A bad pipe may also make hissing or tapping sounds that become louder when you step on the gas pedal.<\/p>\n\n\n\n<p>Severe cracks can leave the flex pipe hanging from underneath your vehicle. If it dangles low enough to touch the road surface, it can make a racket.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Can You Drive with a Bad Flex Pipe?<\/h2>\n\n\n\n<p>Yes, you technically can, but that doesn&rsquo;t mean you should. A cracked or leaky pipe not only makes driving harder but it may also damage other parts of the vehicle. Also, if you drive your vehicle when it has a hanging flex pipe, the damaged part will noisily drag across the road surface. It can even throw out sparks that may ignite fuel vapor or fragments and can damage your vehicle&rsquo;s underside.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix a Flex Pipe<\/h2>\n\n\n\n<p>You can replace a bad flex pipe by yourself if you have the tools, parts, and skills required for the repair job. A DIY replacement and installation can save you the considerable cost of paying a professional technician for their labor.<\/p>\n\n\n\n<p>On average, it takes an experienced mechanic less than an hour to replace a faulty flex pipe. A direct-fit flex product speeds up the process. You can swap out the old exhaust part for the new exhaust flex pipe without modifying anything.<\/p>\n\n\n\n<p>If you lack the tools or skill to install a new flex pipe on your own, it&rsquo;s best to let your mechanic handle the job.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Shopping for Replacement Flex Pipes<\/h2>\n\n\n\n<p>Be selective. There are numerous flex pipe products available today, and not all of them are equal. To find the best pipes for your ride, you must first pay attention to your stock parts&rsquo; dimensions.<\/p>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<p>Flex pipes come in different sizes that may or may not prove compatible with your vehicle&rsquo;s exhaust system. Always start your search by getting the inlet diameter and length of your old pipe and comparing them with the dimensions of a potential replacement. The new exhaust flex pipes should precisely match your stock parts for maximum efficiency and easy installation.<\/p>\n\n\n\n<p>You must also take note of your <a href=\"https:\/\/www.carparts.com\/blog\/the-best-exhaust-systems-for-your-vehicle-top-6-brands\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"replacements&rsquo; material\">replacements&rsquo; material<\/a>. Most flex pipes are made of steel alloy. Forged steel is sturdy, but it&rsquo;s also heavy and potentially vulnerable to corrosion. Meanwhile, stainless steel offers superior protection against rust, while aluminized steel exhaust flex pipes save weight. Determine which material best suits your needs.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">A Closer Look at the Flex Pipe<\/h2>\n\n\n\n<p>The flex pipe has an extremely important function most people don&rsquo;t consider. Since every engine shifts on its mounts as it applies torque to the driveline through the transmission or transaxle, the movement of the engine in relation to other components requires flexible power steering and A\/C hoses to allow for engine movement. If stiff, unyielding piping was used, said piping would soon fracture and too much engine vibration would be heard and felt by the passenger.<\/p>\n\n\n\n<p>The same is true of the engine&rsquo;s exhaust connection. The exhaust is typically mounted on flexible hangers, but as the engine shifts while applying torque, a flexible joint is needed between the engine and the exhaust.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-flex-pipe-of-a-car-1024x681.jpg\" alt=\"old flex pipe of a car\" class=\"wp-image-73903\" width=\"1024\" height=\"681\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-flex-pipe-of-a-car-1024x681.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-flex-pipe-of-a-car-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-flex-pipe-of-a-car-768x511.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-flex-pipe-of-a-car-1536x1022.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-flex-pipe-of-a-car-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-flex-pipe-of-a-car-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-flex-pipe-of-a-car.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The movement of the engine in relation to other components requires flexible power steering and A\/C hoses to allow for engine movement.<\/figcaption><\/figure>\n\n\n\n<p>This is a minimal shift on linear mounted engines, although it&rsquo;s still an issue. Front-wheel drive platforms with transversely mounted engines are far more susceptible to engine movement while driving because the engine tends to &ldquo;roll&rdquo; backward and forward as torque is applied, making some kind of flexible joint vitally necessary for the exhaust system to remain sealed and to prevent noise, vibration, and harshness that would be transmitted to the passenger compartment with no flexible joint.<\/p>\n\n\n\n<p>This need for a flex joint can be satisfied with ball-shaped, graphite coated gaskets where the header pipe connects to the exhaust manifold. Many front-wheel drive vehicles used this method of dealing with isolating engine movement from the exhaust while still providing a perfect seal between the two. But today&rsquo;s vehicles more commonly use a flex joint, either right where the header pipe connects to the manifold, or slightly farther back, but the flex pipe is always near the engine.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get New Flex Pipes for Your Vehicle<\/h2>\n\n\n\n<p>It&rsquo;s not advisable to drive with a cracked flex pipe because it can cause damage to other parts of your vehicle. As soon as your mechanic recommends it, it&rsquo;s best to install a new <a href=\"https:\/\/www.carparts.com\/flex-pipe\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"flex pipe\">flex pipe<\/a> to ensure your safety and avoid costly repairs down the road. Luckily, <a href=\"https:\/\/www.carparts.com\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"CarParts.com\">CarParts.com<\/a> has all the replacement auto parts you&rsquo;ll ever need for your vehicle.<\/p>\n\n\n\n<p>Whether you prefer shopping on your mobile device or your computer, we&rsquo;ve made it a point to set up our website so that everything&rsquo;s one click away. Our built-in vehicle selector makes it easier to check for fitment. All you need to do is enter your vehicle&rsquo;s specific year, make, and model.<\/p>\n\n\n\n<p>Got questions about our products? Our lines are open 24\/7, so our team members can happily assist you with your order.<\/p>\n\n\n\n<p>Order now, and get your new flex pipes in as quick as two business days!<\/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\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>At first glance, the flex pipe doesn&rsquo;t seem special aside from being more flexible than other pipes in the exhaust&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/a-guide-to-flex-pipes-function-symptoms-replacement-and-more\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":41880,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_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":[52,3750],"tags":[3039],"ppma_author":[2607,2985],"class_list":{"0":"post-40661","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-diy","8":"category-exhaust-system","9":"tag-flex-pipe","10":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A Guide to Flex Pipes: Function, Symptoms, Replacement, and More - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"A bad flex pipe can cause serious problems for your vehicle. Learn its functions, symptoms, and replacement in this comprehensive guide.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.carparts.com\/blog\/a-guide-to-flex-pipes-function-symptoms-replacement-and-more\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Guide to Flex Pipes: Function, Symptoms, Replacement, and More - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"A bad flex pipe can cause serious problems for your vehicle. Learn its functions, symptoms, and replacement in this comprehensive guide.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/a-guide-to-flex-pipes-function-symptoms-replacement-and-more\/\" \/>\n<meta property=\"og:site_name\" content=\"In The Garage with CarParts.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-15T09:52:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-18T03:22:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/06\/car-flex-pipe-with-dark-background-isolated.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/a-guide-to-flex-pipes-function-symptoms-replacement-and-more\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/a-guide-to-flex-pipes-function-symptoms-replacement-and-more\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"CarParts.com Research Team\",\"jobTitle\":\"Expert Automotive Writer\",\"description\":\"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. 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