{"product_id":"boltigen-5-8in-heater-hose-15ft-durable-coolant-radiator-line","title":"Boltigen 5\/8in Heater Hose 15ft - Durable Coolant \u0026 Radiator Line","description":"\u003cp\u003eOur review of the Boltigen 5\/8in heater hose finds it best suited for DIY mechanics and fleet maintenance shops that need a rugged, all-season coolant line. The single biggest reason to buy is its combination of premium EPDM construction and double spiral reinforcement, which delivers reliable flexibility and pressure resistance across a wide temperature range, making it a practical replacement hose for radiator, heater, overflow and hot water connections.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize and fit:\u003c\/strong\u003e The 5\/8in inner diameter and 15ft length give installers plenty of hose to cut to length for a secure fit across many engine and heater layouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial construction:\u003c\/strong\u003e Made from EPDM with two spiral layers, the hose resists heat, ozone and aging for longer service life than generic rubber lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated from -40F to 257F, it handles cold starts and high under-hood temperatures without becoming brittle or excessively soft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure rating:\u003c\/strong\u003e With a 100PSI working pressure and 300PSI burst pressure, it maintains steady coolant or fuel flow under normal operating loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards compliance:\u003c\/strong\u003e Exceeds SAE J20R3 D2 (Standard Wall Class D-2) requirements, which supports confidence for automotive and truck applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile applications:\u003c\/strong\u003e Suitable for water, antifreeze, coolant and similar fluids, so it can be used in engine cooling, overflow and residential hot water heater repairs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe Boltigen 5\/8in heater hose is aimed at vehicle owners doing routine maintenance, repair shops replacing heater or radiator lines, and small fleets that need a dependable, all-season hose. Its long 15ft length is convenient for cutting multiple fittings or making custom runs without buying many short sections.\u003c\/p\u003e\u003cp\u003eThis hose may be less appropriate for specialty fuel injection systems requiring specific certified fuel hoses or for users who need pre-formed OEM-shaped hoses; those users should seek application-specific or molded lines designed for exact fitment.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDurable EPDM construction with double spiral reinforcement for extended service life.\u003c\/li\u003e\n\u003cli\u003eWide temperature capability from -40F to 257F makes it suitable year-round.\u003c\/li\u003e\n\u003cli\u003eHigh working and burst pressures provide confidence under typical coolant system loads.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eSold as a straight 15ft length, so installers must cut and clamp to fit rather than using pre-shaped OEM pieces.\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBoltigen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter\u003c\/td\u003e\n\u003ctd\u003e5\/8 in (16mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e0.94 in (24mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e15 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eEPDM with two spiral layers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40F to 257F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure\u003c\/td\u003e\n\u003ctd\u003e100PSI working, 300PSI burst\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe Boltigen 5\/8in heater hose is a practical, cost-effective choice for anyone needing a robust replacement coolant or radiator line. Its reinforced EPDM construction, broad temperature tolerance and strong pressure ratings make it a reliable option for general automotive and truck cooling tasks, offering good value for routine repairs and preventative maintenance.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eCan this hose carry antifreeze?\u003c\/strong\u003e\u003cbr\u003eYes, it is suitable for coolant, antifreeze and water applications as specified by the manufacturer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the length enough for most repairs?\u003c\/strong\u003e\u003cbr\u003eAt 15 ft the hose provides ample length to cut custom runs or service multiple vehicles, but it must be clamped and trimmed to fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it handle high under-hood heat?\u003c\/strong\u003e\u003cbr\u003eYes, the EPDM construction and rated temperature range up to 257F are designed for typical engine compartment conditions.\u003c\/p\u003e","brand":"Boltigen","offers":[{"title":"Default Title","offer_id":48263712932059,"sku":"B0DYD1F389","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71zZC3rDoVL._AC_SL1500.jpg?v=1778272416","url":"https:\/\/gearmusthave.com\/products\/boltigen-5-8in-heater-hose-15ft-durable-coolant-radiator-line","provider":"GearMustHave","version":"1.0","type":"link"}