--- product_id: 159567328 title: "FlexFab - 5/8\" ID x 1 ft (Sold Per Foot) 5526 Blue Silicone Heater Hose 16mm J20R3 Class A 350F Radiator Coolant .63\" P/N 5526-062" brand: "flexfab" price: "€ 20.67" currency: EUR in_stock: true reviews_count: 8 category: "Flex Fab" url: https://www.desertcart.sk/products/159567328-flexfab-5-8-id-x-1-ft-sold-per-foot store_origin: SK region: Slovakia --- # 300 PSI burst pressure 350Β°F max heat resistance Durable blue silicone with nylon fiber FlexFab - 5/8" ID x 1 ft (Sold Per Foot) 5526 Blue Silicone Heater Hose 16mm J20R3 Class A 350F Radiator Coolant .63" P/N 5526-062 **Brand:** flexfab **Price:** € 20.67 **Availability:** βœ… In Stock ## Summary > πŸ”₯ FlexFab: The hose that keeps your engine cool under fire! ## Quick Answers - **What is this?** FlexFab - 5/8" ID x 1 ft (Sold Per Foot) 5526 Blue Silicone Heater Hose 16mm J20R3 Class A 350F Radiator Coolant .63" P/N 5526-062 by flexfab - **How much does it cost?** € 20.67 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/159567328-flexfab-5-8-id-x-1-ft-sold-per-foot) ## Best For - flexfab enthusiasts ## Why This Product - Trusted flexfab brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Precision Flexibility:** Designed with a bend radius 5x the hose ID to prevent kinks in tight spaces. - β€’ **Extreme Heat Endurance:** Withstands scorching temps up to 350Β°F for relentless performance. - β€’ **Custom Length Convenience:** Sold by the foot so you get the perfect fit every timeβ€”no waste, no hassle. - β€’ **Unmatched Pressure Strength:** Burst pressure rated at 300 PSI ensures reliability under stress. - β€’ **Premium Silicone-Nylon Build:** Flexible yet tough blue silicone reinforced with nylon fiber for longevity. ## Overview The FlexFab 5/8" ID x 1 ft Blue Silicone Heater Hose (P/N 5526-062) is a high-performance radiator coolant hose engineered for extreme conditions. Constructed from durable blue silicone with nylon fiber reinforcement, it offers exceptional flexibility and a burst pressure rating of 300 PSI. Rated for temperatures from -65Β°F to 350Β°F, this hose is ideal for demanding automotive and industrial applications, sold by the foot for custom length needs. ## Description FlexFab Series: 5526 Part Number: 5526-063 Inside Diameter (ID): 0.63" (19mm) Outside Diameter (OD): 1.08" (27mm) Hose Length: 10' Bend Radious: 5 times the Hose ID Wall Thickness: .140" / .170" Weight LB/FT: 0.250 Actual Burst Pressure - PSI: 300 SAE J20 R3 Class A - PSI: 200 TMC RP303B Class 1 Grade II - PSI: 125 Extreme temp range: -65F to +350F (-54C to +260C) Material: Blue Cover, with Nylon Fiber Reinforcement Construction: Silicone hose with 1-ply of Nylon Fiber Review: Good quality, flexible. - I used if for a plumbing repair where the pipe had frozen and expanded, so couplings could not be used. It seems to work fine, but it has only been under pressure (max 50 psi) once. So not exactly extreme testing. I did have to put a loop in it and it ended up developing a kink, but the diameter of the loop is only 5-6" Review: Quality, looks, price and great customer service From HD Couplers desertcart vender. - Just beautiful and very well made. So flexible for a hard to get to area when I had to have optimum flex to get it on. Outstanding customer service from desertcart Vendor HD couplers. Free shipping from them, got in in 3 days via USPS. Buy it by the foot in various colors. Five stars on this purchase!!!! ## Features - SILICONE HIGH HEAT RADIATOR HOSE HEATER HOSE COOLANT HOSE ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07X8DH69B | | Best Sellers Rank | #1,354,363 in Automotive ( See Top 100 in Automotive ) #5,333 in Automotive Replacement Radiator Hoses | | Brand | FlexFab | | Color | Blue | | Customer Reviews | 4.2 4.2 out of 5 stars (101) | | Date First Available | September 11, 2017 | | Included Components | Hose | | Item Length | 120 Inches | | Item model number | FlexFab 5/8" | | Manufacturer | FlexFab | | Material | Nylon, Silicone | | Maximum Pressure | 300 Pound per Square Inch | | Nominal Wall Thickness | 0.155 inches | | Outside Diameter | 1.08 Inches | | Part Number | 5526-062 | | Product Dimensions | 12"L x 0.83"W | | Size | 2 Foot | ## Product Details - **Brand:** FlexFab - **Color:** Blue - **Item Length:** 120 Inches - **Manufacturer:** FlexFab - **Material:** Nylon, Silicone - **Maximum Pressure:** 300 Pound per Square Inch - **Nominal Wall Thickness:** 0.155 inches - **Outside Diameter:** 1.08 Inches - **Product Dimensions:** 12"L x 0.83"W ## Images ![FlexFab - 5/8" ID x 1 ft (Sold Per Foot) 5526 Blue Silicone Heater Hose 16mm J20R3 Class A 350F Radiator Coolant .63" P/N 5526-062 - Image 1](https://m.media-amazon.com/images/I/31gFQRf9KLL.jpg) ![FlexFab - 5/8" ID x 1 ft (Sold Per Foot) 5526 Blue Silicone Heater Hose 16mm J20R3 Class A 350F Radiator Coolant .63" P/N 5526-062 - Image 2](https://m.media-amazon.com/images/I/41NL0uj9-+L.jpg) ![FlexFab - 5/8" ID x 1 ft (Sold Per Foot) 5526 Blue Silicone Heater Hose 16mm J20R3 Class A 350F Radiator Coolant .63" P/N 5526-062 - Image 3](https://m.media-amazon.com/images/I/71s7SLjemVL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good quality, flexible. *by S***N on October 13, 2023* I used if for a plumbing repair where the pipe had frozen and expanded, so couplings could not be used. It seems to work fine, but it has only been under pressure (max 50 psi) once. So not exactly extreme testing. I did have to put a loop in it and it ended up developing a kink, but the diameter of the loop is only 5-6" ### ⭐⭐⭐⭐⭐ Quality, looks, price and great customer service From HD Couplers Amazon vender. *by R***T on April 27, 2023* Just beautiful and very well made. So flexible for a hard to get to area when I had to have optimum flex to get it on. Outstanding customer service from Amazon Vendor HD couplers. Free shipping from them, got in in 3 days via USPS. Buy it by the foot in various colors. Five stars on this purchase!!!! ### ⭐⭐⭐⭐⭐ Good product *by C***A on August 17, 2021* Very strong an flexible hose, will definitely buy it again ## Frequently Bought Together - FlexFab - 5/8" ID x 1 ft (Sold Per Foot) 5526 Blue Silicone Heater Hose 16mm J20R3 Class A 350F Radiator Coolant .63" P/N 5526-062 - FlexFab - 3/4" ID x 1 ft (Sold Per Foot) 5526 Blue Silicone Heater Hose 19mm J20R3 Class A 350F Radiator Coolant P/N 5526-075 - FlexFab - 1/2" ID x 1 ft (Sold Per Foot) 5526 Blue Silicone Heater Hose 13mm J20R3 Class A 350F Radiator Coolant Part Number 5526-050 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/159567328-flexfab-5-8-id-x-1-ft-sold-per-foot](https://www.desertcart.sk/products/159567328-flexfab-5-8-id-x-1-ft-sold-per-foot) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-05-25*