K-Seal
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K-Seal Heavy Duty ST5516 Coolant Stop Leak 16oz for Large Trucks, RVs, and Tractors
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K-Seal Heavy Duty ST5516 Coolant Stop Leak 16oz for Large Trucks, RVs, and Tractors
K-Seal HD is the #1 Brand for coolant stop leaks, designed for large trucks and AG equipment, making permanent repairs on cracks and holes within the entire coolant system.
K-Seal Heavy Duty ST5516 Coolant Stop Leak 16oz for Large Trucks, RVs, and Tractors
Item #: 14256815

K-Seal Heavy Duty ST5516 Coolant Stop Leak 16oz for Large Trucks, RVs, and Tractors

Item #: 14256815

TTD 268

Price Details

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*All items will import from US

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Order now and get it around Friday, July 10
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K-Seal HD is the #1 Brand for coolant stop leaks, designed for large trucks and AG equipment, making permanent repairs on cracks and holes within the entire coolant system.
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What Stands Out

Versatile Usage
Specifically formulated for heavy-duty applications, K-Seal works effectively on large trucks, RVs, buses, and tractors, providing a reliable solution for diverse coolant leak issues across various vehicle types.
Permanent Seal
K-Seal creates a permanent seal for leaks, saving you time and money on temporary fixes. It ensures long-lasting durability, enhancing vehicle performance and preventing future leaks.
Easy Application
With a simple one-step application, K-Seal quickly integrates into your vehicle's system. Its user-friendly design allows for fast treatment without the need for complex procedures or professional assistance.

Product Details

Shop the best Kseal Heavy Duty Permanent Coolant Leak Sealer online at Ubuy Trinidad and Tobago. Get the ultimate solution to stop coolant leaks. Fast shipping available.
BrandK-Seal
ColorBlue
Volume capacity16 fl oz
FeaturesEasy Installation
Vehicle fitment typeUniversal
Compatible carsAll
MaterialCopper, Zinc Gluconate
Container typeBottle
Product lineCoolant Leak Repair
ManufacturerSolv-Tec
Size16 fl oz
Net content statement16 fluid ounces
Product net content uomFluid Ounce
Product net content parent16 Fluid Ounces
Is bulkN
Weight1 lb (450 grams)
Vehicle makeAll
Vehicle modelAll
Color categoryBlue, Orange
ModelST5516

Who Should Buy?

Suitable For
  • Heavy Vehicle Owners

    Ideal for owners of large trucks, buses, and RVs experiencing coolant leaks needing immediate repair solutions.

  • DIY Mechanics

    Perfect for do-it-yourself enthusiasts who prefer easy, reliable solutions for temporary coolant leak repairs.

  • Emergency Repairs

    Useful for emergency situations where quick sealing of leaks is essential to avoid extensive damage.

Not Suitable For
  • Light Vehicles

    Not suitable for smaller cars or vehicles that don’t require heavy-duty leak sealing solutions.

  • Long-Term Solutions

    Not designed for permanent repairs; may require subsequent professional attention for lasting fixes.

  • Severe Damage

    Ineffective for vehicles with significant structural or extensive coolant system damage requiring comprehensive repairs.

Product Description

K-Seal Heavy Duty ST5516 Coolant Stop Leak 16oz for Large Trucks, RVs, and Tractors

About This Item

Introducing the Kseal Heavy Duty Permanent Coolant Leak Sealer - The Ultimate Solution for Coolant Leaks! Is your vehicle experiencing constant coolant leaks? Are you tired of spending time and money on temporary fixes that don't last? Look no further than the Kseal Heavy Duty Permanent Coolant Leak Sealer. With its advanced formula, this coolant sealant is designed to provide a long-lasting solution to coolant leaks in your vehicle's cooling system. Our heavy-duty coolant leak sealer is specifically formulated to effectively seal leaks in radiators, heater cores, water pumps, and other cooling system components. It works by quickly and permanently sealing cracks, leaks, and porosity in the cooling system, allowing you to get back on the road with confidence. Unlike other coolant stop leaks on the market, the Kseal Heavy Duty Permanent Coolant Leak Sealer is a one-time application.

This means that you won't have to worry about continually reapplying the sealant to prolong its effectiveness. Simply apply the coolant repair solution according to the instructions, and let it do its magic. Not only does our coolant leak sealer provide a permanent fix, but it also helps to prevent future leaks from occurring. Its innovative formula contains ceramic microfibers that reinforce weak areas in the cooling system, creating a durable seal that can withstand high temperatures and pressure.

This makes it an ideal choice for both regular vehicles and heavy-duty applications. With the Kseal Heavy Duty Permanent Coolant Leak Sealer, you can save time and money on expensive repairs and prevent potential engine damage caused by coolant leaks. Trust the brand that is trusted by automotive professionals and DIY enthusiasts alike. Don't let coolant leaks hold you back any longer - get your Kseal Heavy Duty Permanent Coolant Leak Sealer today and experience the ultimate solution for coolant leaks in your vehicle's cooling system.

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Customer Questions & Answers

  • Question: Is K-Seal HD suitable for small vehicles?

    Answer: K-Seal HD is specifically designed for large trucks and AG equipment but can be used for small vehicles as well.
  • Question: Can K-Seal HD be used for diesel engines?

    Answer: Yes, K-Seal HD is suitable for use in diesel engines.
  • Question: How long does the repair last?

    Answer: K-Seal HD provides a permanent repair for cracks and holes in the coolant system.

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“The product received very good packaging & safe…Thank You”

16 June 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.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

TTD 268

Order now and get it around Friday, July 10

QTY:

Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • No draining or flushing needed
  • Works in minutes
  • Suitable for up to 50-quart systems, can use another bottle for larger systems
  • Repairs cracks and holes in the entire coolant system including head gasket, block, radiator, heater core, freeze plugs, and water pump casing
  • Suitable for aluminum and hard plastic
  • No need to drain or flush existing coolant, simply shake and pour contents into the system