--- title: "5/8 silicone heater hose — Niche Verdict: Skip it (44/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/automotive/5-8-silicone-heater-hose" last_updated: "2026-07-09T23:04:41.617Z" locale: en meta: description: "a small market ($21K/yr) — 5/8 silicone heater hose doesn't clear our bar today." "og:description": "a small market ($21K/yr) — 5/8 silicone heater hose doesn't clear our bar today." "og:title": "5/8 silicone heater hose — Niche Verdict: Skip it (44/100) | Amazon United States - Flapen" --- Back to Flapen home # **5/8 silicone heater hose** **Skip it****44/100 ** a small market ($21K/yr) — 5/8 silicone heater hose doesn't clear our bar today. **Market/yr** **$21K** **Growth (1y)** **+172.0%** **Products** **25** **Brands** **13** was 14 a year ago **Sellers** **19** **Price range** **$8.69–$89.67** **Returns** **2.3%** **Rating** **4.6★** **Skip it** Scored 44/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **1** ×0.30 Growth **73** ×0.30 Competition **50** ×0.20 Quality gap **31** ×0.10 Returns **82** ×0.10 ## **Demand** Weekly Amazon search volume, last 64 weeks — +172.0% year over year. 593296.5Spike '25Black Friday '25Holiday '25Spike '26Apr '25Jun '25Sep '25Nov '25Jan '26Apr '26 ## **Seasonality** Monthly demand index across the year — 1.00 is average. JFMAMJJASOND Peak months: Jan · busiest ÷ quietest = 1.5× ## **Competition** - EVIL ENERGY37% - SATUGUOJI17% - Outus14% - Generic7% - Uselection6% - YGDMD6% - Other (7 brands)14% The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them. 13 brands and 19 sellers compete here. **Brands** **13 **▼falling was 14 a year ago **Sellers** **19** **Top 5 brand share** **81%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![EVIL ENERGY 5/8 Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 60PSI 10FT Black](https://m.media-amazon.com/images/I/41Z1wuoX-xL.jpg) [**EVIL ENERGY 5/8 Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 60PSI 10FT Black**](https://www.amazon.com/dp/B0D9LD4LP5) EVIL ENERGY$26.934.6★45017%▼falling 2 ![5FT ID 5/8 (16mm) Heater Hose Coolant Radiator Straight Temperature Reinforced Silicone Tubing Rupture Pressure 232 Psi With 5 Clamps 4MM Thick for Vehicle Cooling Systems(blue)](https://m.media-amazon.com/images/I/410DaOa37AL.jpg) [**5FT ID 5/8 (16mm) Heater Hose Coolant Radiator Straight Temperature Reinforced Silicone Tubing Rupture Pressure 232 Psi With 5 Clamps 4MM Thick for Vehicle Cooling Systems(blue)**](https://www.amazon.com/dp/B0GCJ2WMXB) SATUGUOJI$16.874.7★6114%▲rising 3 ![EVIL ENERGY 5/8 Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 60PSI 5FT Black](https://m.media-amazon.com/images/I/31xpVHUzFLL.jpg) [**EVIL ENERGY 5/8 Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 60PSI 5FT Black**](https://www.amazon.com/dp/B0D9LDKLCQ) EVIL ENERGY$16.434.6★45013%▲rising 4 ![Outus 5/8 ID Silicone Heater Hose 25ft Roll Coolant Radiator Straight 75 Psi Pressure Reinforced High Temperature for Water/gas Transportation for Vehicle Cooling Systems(Blue)](https://m.media-amazon.com/images/I/51V5AR1KNvL.jpg) [**Outus 5/8 ID Silicone Heater Hose 25ft Roll Coolant Radiator Straight 75 Psi Pressure Reinforced High Temperature for Water/gas Transportation for Vehicle Cooling Systems(Blue)**](https://www.amazon.com/dp/B0G26MFWJ4) Outus$76.744.4★477%▲rising 5 ![5Ft ID 5/8 Heater Hose Silicone Radiator Hose with 650PSI Rupture Pressure for Water/Gas Transportation Professional Car Accessories Coolant Hoses for Vehicle Cooling Systems (5/8 5FT)](https://m.media-amazon.com/images/I/31ZVaeTYNlL.jpg) [**5Ft ID 5/8 Heater Hose Silicone Radiator Hose with 650PSI Rupture Pressure for Water/Gas Transportation Professional Car Accessories Coolant Hoses for Vehicle Cooling Systems (5/8 5FT)**](https://www.amazon.com/dp/B0F52L7GP7) YGDMD$13.134.6★1606%▲rising 6 ![Outus 5/8 ID Silicone Heater Hose 10 ft Roll Coolant Radiator Straight 75 Psi Pressure Reinforced High Temperature for Water/gas Transportation for Vehicle Cooling Systems(Blue)](https://m.media-amazon.com/images/I/51X1-rISRYL.jpg) [**Outus 5/8 ID Silicone Heater Hose 10 ft Roll Coolant Radiator Straight 75 Psi Pressure Reinforced High Temperature for Water/gas Transportation for Vehicle Cooling Systems(Blue)**](https://www.amazon.com/dp/B0G26KTJXP) Outus$39.264.4★474%▲rising 7 ![5/8X5FT(ID:16MM) Silicone Heater Hose Blue and Red Coolant Radiator Vacuum Line Reinforced High Temperature Reinforced 4MM Thick(0.16 In) (5/8 ID-5Ft(ID 16mm))](https://m.media-amazon.com/images/I/41AXm18dohL.jpg) [**5/8X5FT(ID:16MM) Silicone Heater Hose Blue and Red Coolant Radiator Vacuum Line Reinforced High Temperature Reinforced 4MM Thick(0.16 In) (5/8 ID-5Ft(ID 16mm))**](https://www.amazon.com/dp/B0FMNLWBTR) Uselection$16.944.6★704%▲rising 8 ![EVIL ENERGY 5/8 High Performance Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 5FT Black](https://m.media-amazon.com/images/I/41vYf0-0AsL.jpg) [**EVIL ENERGY 5/8 High Performance Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 5FT Black**](https://www.amazon.com/dp/B0FWC7FCTN) EVIL ENERGY$37.915.0★33%▲rising 9 ![High Performance Silicone Heater Hose 5/8 ID Reinforced Flexible High Temp (-65F to 350F) Blue | Sold Per Foot](https://m.media-amazon.com/images/I/41UmtgtAlmL.jpg) [**High Performance Silicone Heater Hose 5/8 ID Reinforced Flexible High Temp (-65F to 350F) Blue | Sold Per Foot**](https://www.amazon.com/dp/B0DX5MYZV6) Generic$8.694.5★883%▼falling 10 ![KDP 5/8X5FT(ID:16MM) 1.5 M Silicone Heater Hose Coolant Hose 1ply Reinforced 4MM Thick Max Temperature Rating 350F Work Pressure 100 psi+ Mutiple Use for Air and Water](https://m.media-amazon.com/images/I/41sz3z4AwiL.jpg) [**KDP 5/8X5FT(ID:16MM) 1.5 M Silicone Heater Hose Coolant Hose 1ply Reinforced 4MM Thick Max Temperature Rating 350F Work Pressure 100 psi+ Mutiple Use for Air and Water**](https://www.amazon.com/dp/B094GLHCZT) KDP$17.074.7★6383%▼falling 11 ![FLEXFAB 5/8 BLUE SILICONE HI-TEMP HOSE (MADE IN USA) (Blue 10 Feet)](https://m.media-amazon.com/images/I/41qU0+Y0dpL.jpg) [**FLEXFAB 5/8 BLUE SILICONE HI-TEMP HOSE (MADE IN USA) (Blue 10 Feet)**](https://www.amazon.com/dp/B07PYZNRH9) FlexFab$42.894.8★1733%▼falling 12 ![Outus 3/4 ID Silicone Heater Hose 25ft Roll Coolant Radiator Straight 85 Psi Pressure Reinforced High Temperature for Water/gas Transportation for Vehicle Cooling Systems(Blue)](https://m.media-amazon.com/images/I/51K7zwZIuEL.jpg) [**Outus 3/4 ID Silicone Heater Hose 25ft Roll Coolant Radiator Straight 85 Psi Pressure Reinforced High Temperature for Water/gas Transportation for Vehicle Cooling Systems(Blue)**](https://www.amazon.com/dp/B0G26M2MR1) Outus$86.434.4★473%▲rising 13 ![5/8 Silicone Heater Hose (25ft Roll) 50PSI](https://m.media-amazon.com/images/I/41cyX9xcKML.jpg) [**5/8 Silicone Heater Hose (25ft Roll) 50PSI**](https://www.amazon.com/dp/B0DJDXLGYJ) Generic$89.674.0★92%▼falling 14 ![EVIL ENERGY 5/8 High Performance Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 10FT Black](https://m.media-amazon.com/images/I/41mlCv5urfL.jpg) [**EVIL ENERGY 5/8 High Performance Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 10FT Black**](https://www.amazon.com/dp/B0FWC9J7MH) EVIL ENERGY$74.805.0★32%▲rising 15 ![5/8X10FT(ID:16MM) Silicone Heater Hose Blue and Red Coolant Radiator Vacuum Line Reinforced High Temperature Reinforced 4MM Thick(0.16 In) (5/8 ID-10Ft(ID 16mm))](https://m.media-amazon.com/images/I/41AXm18dohL.jpg) [**5/8X10FT(ID:16MM) Silicone Heater Hose Blue and Red Coolant Radiator Vacuum Line Reinforced High Temperature Reinforced 4MM Thick(0.16 In) (5/8 ID-10Ft(ID 16mm))**](https://www.amazon.com/dp/B0FMNN9MKN) Uselection$30.854.6★702%—flat **~~Showing 15 of 25 — show all ~~** ## **Product shelf** All 25 tracked products in this niche. Top sellersNewestTrending [![EVIL ENERGY 5/8 Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 60PSI 10FT Black](https://m.media-amazon.com/images/I/41Z1wuoX-xL.jpg)**EVIL ENERGY 5/8 Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 60PSI 10FT Black** EVIL ENERGY**$26.93**4.6★450 reviews](https://www.amazon.com/dp/B0D9LD4LP5) [![5FT ID 5/8 (16mm) Heater Hose Coolant Radiator Straight Temperature Reinforced Silicone Tubing Rupture Pressure 232 Psi With 5 Clamps 4MM Thick for Vehicle Cooling Systems(blue)](https://m.media-amazon.com/images/I/410DaOa37AL.jpg)**5FT ID 5/8 (16mm) Heater Hose Coolant Radiator Straight Temperature Reinforced Silicone Tubing Rupture Pressure 232 Psi With 5 Clamps 4MM Thick for Vehicle Cooling Systems(blue)** SATUGUOJI**$16.87**4.7★61 reviews](https://www.amazon.com/dp/B0GCJ2WMXB) [![EVIL ENERGY 5/8 Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 60PSI 5FT Black](https://m.media-amazon.com/images/I/31xpVHUzFLL.jpg)**EVIL ENERGY 5/8 Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 60PSI 5FT Black** EVIL ENERGY**$16.43**4.6★450 reviews](https://www.amazon.com/dp/B0D9LDKLCQ) [![Outus 5/8 ID Silicone Heater Hose 25ft Roll Coolant Radiator Straight 75 Psi Pressure Reinforced High Temperature for Water/gas Transportation for Vehicle Cooling Systems(Blue)](https://m.media-amazon.com/images/I/51V5AR1KNvL.jpg)**Outus 5/8 ID Silicone Heater Hose 25ft Roll Coolant Radiator Straight 75 Psi Pressure Reinforced High Temperature for Water/gas Transportation for Vehicle Cooling Systems(Blue)** Outus**$76.74**4.4★47 reviews](https://www.amazon.com/dp/B0G26MFWJ4) [![5Ft ID 5/8 Heater Hose Silicone Radiator Hose with 650PSI Rupture Pressure for Water/Gas Transportation Professional Car Accessories Coolant Hoses for Vehicle Cooling Systems (5/8 5FT)](https://m.media-amazon.com/images/I/31ZVaeTYNlL.jpg)**5Ft ID 5/8 Heater Hose Silicone Radiator Hose with 650PSI Rupture Pressure for Water/Gas Transportation Professional Car Accessories Coolant Hoses for Vehicle Cooling Systems (5/8 5FT)** YGDMD**$13.13**4.6★160 reviews](https://www.amazon.com/dp/B0F52L7GP7) [![Outus 5/8 ID Silicone Heater Hose 10 ft Roll Coolant Radiator Straight 75 Psi Pressure Reinforced High Temperature for Water/gas Transportation for Vehicle Cooling Systems(Blue)](https://m.media-amazon.com/images/I/51X1-rISRYL.jpg)**Outus 5/8 ID Silicone Heater Hose 10 ft Roll Coolant Radiator Straight 75 Psi Pressure Reinforced High Temperature for Water/gas Transportation for Vehicle Cooling Systems(Blue)** Outus**$39.26**4.4★47 reviews](https://www.amazon.com/dp/B0G26KTJXP) [![5/8X5FT(ID:16MM) Silicone Heater Hose Blue and Red Coolant Radiator Vacuum Line Reinforced High Temperature Reinforced 4MM Thick(0.16 In) (5/8 ID-5Ft(ID 16mm))](https://m.media-amazon.com/images/I/41AXm18dohL.jpg)**5/8X5FT(ID:16MM) Silicone Heater Hose Blue and Red Coolant Radiator Vacuum Line Reinforced High Temperature Reinforced 4MM Thick(0.16 In) (5/8 ID-5Ft(ID 16mm))** Uselection**$16.94**4.6★70 reviews](https://www.amazon.com/dp/B0FMNLWBTR) [![EVIL ENERGY 5/8 High Performance Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 5FT Black](https://m.media-amazon.com/images/I/41vYf0-0AsL.jpg)**EVIL ENERGY 5/8 High Performance Silicone Heater Hose Radiator Coolant Hose Straight SAE J20R3 CLASS-A 5FT Black** EVIL ENERGY**$37.91**5.0★3 reviews](https://www.amazon.com/dp/B0FWC7FCTN) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Quality-Overall**25% *“Hose is good quality”* **Size-Overall**12% *“Perfect fit”* **Advertised Vs Actual Product**10% *“Product is as advertised”* **Value For Money**8% *“Overall, great value for the price”* **Durability**6% *“very durable”* **Heating**6% *“Worked great for the job I needed flushing heater core good quality”* **Flexibility**4% *“Flexible and strong”* **Ease Of Use**3% *“easy enough to push on”* **Material Quality**3% *“The material feels much more durable”* **Efficiency**3% *“Hose works amazing”* ### **What buyers complain about ** **Quality-Overall**15% *“Bad quality control previously returned at least thats what it looks like”* **Flexibility**11% *“It does kink if bend it”* **Advertised Vs Actual Product**10% *“I believe the description is wrong - in one picture it shows the outer jacket as PVC - this I believe is incorrect as this is a silicone outer having used this kind of hose for so long I know the feel of it”* **Strength**6% *“Very flimsy”* **Thin**6% *“Thin wall not as heavy duty as I bought from local store”* **Size-Overall**6% *“Inside is bigger than 5/8”* **Assembly/Installation**3% *“Havent installed it yet”* **Weight Heavy**3% *“Feels heavier than the local parts store brand”* **Coolant**3% *“I recently had a coolant leak on my 2010 tahoe right on the heater T connectors that are by the firewall that lead to the heater core”* **Value For Money**2% *“not worth the cost”* #### **Top return reasons**- Size-Overall62% - Advertised Vs Actual Product6% - Thin5% - Compatibility-Overall4% - Quality-Overall3% - Flexibility2% - Material Quality2% - Strength2% - Defective Material/Parts2% - Functionality-Overall2%