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Item #:
118589976
FlexFab - 5/8" ID x 50 ft 5521 Green Premium Silicone Heater Hose 16mm J20R3 Class A 350F Radiator Coolant P/N 5521-062
85% of respondents would recommend this to a friend
Item #:
118589976
BND 557
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
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Order now and get it around Sunday, September 20
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Ideal for extreme temperature and various pressure ranges where high performance levels are required.
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What Stands Out
High-Temperature Resistance
With a temperature tolerance of up to 350°F, this silicone hose ensures reliable performance in high-heat environments, making it ideal for radiator coolant applications.
Flexible & Durable
The premium silicone material offers excellent flexibility and longevity, allowing for easy installation while resisting cracking and wear over time, outperforming standard rubber hoses.
Versatile Compatibility
Designed to meet J20R3 Class A standards, the FlexFab hose is compatible with a variety of vehicles and equipment, providing a reliable solution for diverse coolant and heater hose needs.
Product Details
| Item Dimensions L x W | 600"L x 1.02"W (1524 cm) |
| Item Weight | 13.4 Pounds (6.08 kg) |
| Nominal Wall Thickness | 0.625 inch (1.6 cm) |
| Outside Diameter | 1.02 Inches (2.6 cm) |
| Item Length | 50 Feet |
| Material Type | Nylon, Silicone |
| Color | Green |
| Maximum Pressure | 125 Pound per Square Inch (317.5 cm) |
| Brand Name | hpcouplers |
| UPC | 700811478691 |
| Manufacturer | FlexFab |
| Unit Count | 1 Count |
| Brand | hpcouplers |
| Material | Nylon, Silicone |
| Product Dimensions (L x W x H) | 600"L x 1.02"W (1524 cm) |
Who Should Buy?
-
Automotive Enthusiasts
Ideal for car enthusiasts who prioritize high-performance coolant hoses in their vehicles for improved durability.
-
Heavy Duty Applications
Suitable for industrial use where high temperature and pressure resistance is essential in radiator and heater applications.
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Custom Builds
Perfect for custom automotive projects requiring reliable silicone hoses for cooling systems or heater connections.
-
Budget-Conscious Users
Not ideal for those looking for inexpensive options, as premium materials lead to higher costs compared to standard hoses.
Product Description
FlexFab - 5/8" ID x 50 ft 5521 Green Premium Silicone Heater Hose 16mm J20R3 Class A 350F Radiator Coolant P/N 5521-062
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Customer Questions & Answers
-
Question:
What is the temperature range of this silicone hose?
Answer: The temperature range is from -65°F (-54°C) to +350°F (+177°C). -
Question:
What kind of chemical resistance does the hose provide?
Answer: The hose resists hardening, cracking, aging, and is compatible with coolant additives. -
Question:
What is the burst pressure of the hose?
Answer: The actual burst pressure is 375 psi.
hpcouplers Radiator Editorial Review
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Customer Reviews & Ratings
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Pros
- High heat resistance
- Flexible and durable
- Easy installation
- Excellent coolant flow
- Long-lasting performance
Cons
- May require special fittings.
Platform Trust & Buyer Confidence
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Jazz
Verified buyer
“Easy to use and always helpful and sorts any issues I've had past and present”
1 September 2026 · via Trustpilot
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Emmanuel
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“I always receive support when I engage customer service. Overall my experience with UBUY has been top notch. Keep up the good work.”
31 August 2026 · via Trustpilot
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fnd
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“The delivery was fast and the product came undamaged and authentic.”
29 August 2026 · via Trustpilot
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25 August 2026 · via Trustpilot
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Hengo
Verified buyer
“Fast, convenient and cheap. Great store!”
27 August 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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BND 557
Order now and get it around Sunday, September 20
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- Brand new silicone hose cut from a reel.
- Meets or exceeds SAE J20 R3 and TMC RP303B specifications.
- Temperature range: -65°F to +350°F.
- Standard wall thickness of .170”/.220”.
- Burst pressure of 375psi, excellent for high performance.
- Resistant to aging, chemicals, and extreme conditions.
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