{"product_id":"hsp-diesel-upper-coolant-tube-for-2011-2014-chevrolet-and-gmc-lml-duramax","title":"HSP Diesel Upper Coolant Tube for 2011-2014 Chevrolet and GMC LML Duramax","description":"\u003ch2\u003e2011-2014 Chevrolet \/ GMC Upper Coolant Tube\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 537-1-HSP\u003c\/p\u003e\n\u003cp\u003eThe HSP Upper Coolant Tube is a premium upgrade for 2011-2014 LML Duramax-equipped Chevrolet and GMC trucks. This often-overlooked component improves durability and brings a cleaner, more custom look to your engine bay.\u003c\/p\u003e\n\u003ch3\u003eWhy Upgrade the Upper Coolant Tube?\u003c\/h3\u003e\n\u003cp\u003eThe OEM upper coolant tube is made of rubber a material that can crack over time, especially under high heat and pressure. This leads to cooling system failure and a cluttered engine bay appearance. The HSP Upper Coolant Tube resolves both of those issues in one upgrade.\u003c\/p\u003e\n\u003ch3\u003eWhat Sets the HSP Tube Apart?\u003c\/h3\u003e\n\u003cp\u003eCrafted from aluminum, the HSP Upper Coolant Tube offers superior strength, eliminates rubber cracking risks, and delivers better aesthetics. Designed with gentle bends to match factory routing, this powder-coated tube includes the signature HSP Diesel logo front and center. It's a direct-fit replacement with upgraded components that improve both flow and reliability.\u003c\/p\u003e\n\u003ch3\u003eWhats Included:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x LML (11-14) Radiator Hose Tube w\/Logo (HSP-IN-239-1)\u003c\/li\u003e\n\u003cli\u003e1x 1 3\/4\" Worm Gear Clamp (RFB-408-RFAB)\u003c\/li\u003e\n\u003cli\u003e1x 1.75\" 90degree Boot - Rubber (RFB-433-RFAB)\u003c\/li\u003e\n\u003cli\u003e1x 1.75\"x3\" Straight Boot - Rubber (RFB-437-RFAB)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLML: 2011-2014 (VIN Code 8)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHow to Check VIN Code:\u003c\/strong\u003e The 8th character of the VIN indicates engine code. The 10th character shows the model year.\u003c\/p\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAluminum construction for increased durability\u003c\/li\u003e\n\u003cli\u003eIncludes high-strength silicone boots\u003c\/li\u003e\n\u003cli\u003eEliminates risk of cracking rubber hoses\u003c\/li\u003e\n\u003cli\u003ePowder coat options available\u003c\/li\u003e\n\u003cli\u003eDrop-in fit with factory components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e HSP is currently transitioning boot styles. Some units may ship with unbranded boots to maintain part availability and quality standards.\u003c\/p\u003e\n\u003ch3\u003eOur Warranty\u003c\/h3\u003e\n\u003ch4\u003eHSP \"NO BS\" LIMITED LIFETIME WARRANTY\u003c\/h4\u003e\n\u003cp\u003eAt HSP, we believe in our products and stand behind every one that leaves our facility. For years, we've supported customers without a formal policy now, with our official No BS Warranty, you can count on reliable, long-term coverage. This is our promise to go above and beyond, with straightforward support and no runaround.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/hspdiesel.com\/hsp-warranty\" rel=\"noopener\" title=\"Read the entire HSP Limited Lifetime Warranty\" target=\"_blank\"\u003eClick here to read the full HSP Warranty\u003c\/a\u003e\u003c\/p\u003e","brand":"HSP Diesel Performance","offers":[{"title":"Unfinished Raw","offer_id":67657364308260,"sku":"537-1-HSP-RAW","price":150.0,"currency_code":"USD","in_stock":true},{"title":"Polar White","offer_id":67657364341028,"sku":"537-1-HSP-W","price":180.0,"currency_code":"USD","in_stock":true},{"title":"Silk Satin Black","offer_id":67657364373796,"sku":"537-1-HSP-SB","price":180.0,"currency_code":"USD","in_stock":true},{"title":"M\u0026M Orange","offer_id":67657364406564,"sku":"537-1-HSP-O","price":180.0,"currency_code":"USD","in_stock":true},{"title":"Ink Black","offer_id":67657364439332,"sku":"537-1-HSP-GB","price":180.0,"currency_code":"USD","in_stock":true},{"title":"Kingsport Gray","offer_id":67657364472100,"sku":"537-1-HSP-DG","price":180.0,"currency_code":"USD","in_stock":true},{"title":"Illusion Cherry","offer_id":67657364504868,"sku":"537-1-HSP-CR","price":180.0,"currency_code":"USD","in_stock":true},{"title":"Illusion Purple","offer_id":67657364537636,"sku":"537-1-HSP-CP","price":180.0,"currency_code":"USD","in_stock":true},{"title":"Illusion Blueberry","offer_id":67657364570404,"sku":"537-1-HSP-CB","price":180.0,"currency_code":"USD","in_stock":true},{"title":"Flag Red","offer_id":67657364603172,"sku":"537-1-HSP-BR","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0936\/4019\/6388\/files\/hsp-diesel-537-1-hsp-raw-11-14-chevrolet-gmc-upper-coolant-tube-raw.webp?v=1791565825","url":"https:\/\/stainlessdiesel.com\/products\/hsp-diesel-upper-coolant-tube-for-2011-2014-chevrolet-and-gmc-lml-duramax","provider":"Stainless Diesel ","version":"1.0","type":"link"}