K-Seal
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K-Seal ST5501 Multi-Purpose One Step Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required
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K-Seal ST5501 Multi-Purpose One Step Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required
K-Seal ST5501 is a permanent, one-step coolant leak repair that fixes cracks and leaks in various parts of the engine.
K-Seal ST5501 Multi-Purpose One Step Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required
Item #: 218972

K-Seal ST5501 Multi-Purpose One Step Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required

Item #: 218972

TTD 140

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*All items will import from US

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Order now and get it around Thursday, July 16
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K-Seal ST5501 is a permanent, one-step coolant leak repair that fixes cracks and leaks in various parts of the engine.
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What Stands Out

One-Step Solution
K-Seal's one-step formula makes coolant leak repair effortless, allowing users to simply pour and go without the need for complex procedures or additional tools.
Compatible Formula
This product mixes seamlessly with all types of antifreeze, ensuring versatility and ease of use across various vehicles and cooling systems without compatibility concerns.
Permanent Repair
K-Seal provides a permanent seal for coolant leaks, saving you time and money on frequent repairs and ensuring peace of mind with a long-lasting solution to overheating issues.

Product Details

Shop for K-Seal ST5501 Coolant Leak Repair at Ubuy Trinidad and Tobago. Permanent solution for coolant leaks. Fast shipping and effective repair. Order now!
  • Permanent coolant leak repair with K-Seal - Just shake, pour and go
  • Universal fit type - mixes with all antifreeze
  • No draining or flushing required
  • Fixes cracks and leaks in radiator, head gasket, freeze plugs, cylinder heads, heater core, water pump casing, and engine blocks
  • K-Seal 8 fluid ounce bottle is effective to 20 quarts cooling capacity
  • Trusted by professionals and millions of customers worldwide
Package Weight1.72 Pound

Who Should Buy?

Suitable For
  • DIY Car Owners

    Ideal for car owners who prefer quick, effective solutions without professional assistance to seal minor coolant leaks.

  • Emergency Repairs

    Suitable for urgent situations where immediate coolant leak prevention is needed to avoid overheating while on the road.

  • Older Vehicles

    Works well for older vehicles that may develop minor leaks over time, providing a cost-effective, long-lasting fix.

Not Suitable For
  • Major Leaks

    Not suitable for large or significant leaks that require professional repair and inspection rather than a quick fix.

  • Professional Mechanics

    Mechanics may prefer traditional repair methods rather than using a temporary sealant for long-term vehicle maintenance.

  • High-Performance Engines

    Not recommended for high-performance applications where system integrity and precision repairs are critical for optimal operation.

Product Description

K-Seal ST5501 Multi-Purpose One Step Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required

About This Item

Introducing the KALIMEX LTD ST5501 K-Seal Coolant Leak Repair! This revolutionary product is here to put an end to your coolant leak woes and keep your engine running smoothly. Are you tired of dealing with coolant leaks in your vehicle? K-Seal Coolant Leak Repair is the ultimate solution you've been searching for. Whether you're experiencing a small drip or a significant leak, this product is designed to fix it all. Engineered to repair coolant leaks in automotive engines, radiators, and other cooling system components, K-Seal Coolant Leak Repair delivers unmatched performance. Say goodbye to costly repairs and frustrating trips to the mechanic.

With this product, you can fix the problem yourself, saving you time and money. What sets K-Seal Coolant Leak Repair apart from other products on the market is its ability to permanently seal leaks while still being compatible with all types of antifreeze, including ethylene and propylene glycol. The unique formula combines ceramic micro-fibers and copper particles that act as a sealant, effectively plugging any leaks in your coolant system. Easy to use, simply add K-Seal Coolant Leak Repair to your radiator or expansion tank, and it does the rest. As the engine heats up, the product circulates and finds the cracks or holes causing the leak, creating a permanent seal.

This means you can continue to drive without the worry of coolant loss or engine damage. Don't let a coolant leak put a damper on your driving experience. Invest in the KALIMEX LTD ST5501 K-Seal Coolant Leak Repair and get back on the road with confidence. This product is your ultimate coolant leak solution, delivering fast and reliable results. Stop coolant leaks in their tracks with the KALIMEX LTD ST5501 K-Seal Coolant Leak Repair.

Don't wait for the problem to worsen - grab your coolant leak repair kit today and experience the difference it can make in your vehicle's performance. Trust in the best coolant leak sealant on the market and keep your engine running smoothly for years to come.

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Customer Questions & Answers

  • Question: What is K-Seal ST5501 used for?

    Answer: K-Seal ST5501 is primarily designed to permanently seal leaks in your coolant system. It works by creating a durable seal that effectively prevents coolant loss caused by leaks in hoses, radiators, and gaskets. This product is particularly useful for car owners facing issues with overheating or coolant seeping, allowing for a quicker and hassle-free resolution without costly repairs.
  • Question: How does K-Seal ST5501 work?

    Answer: K-Seal ST5501 utilizes a unique formula that combines organic and inorganic sealing agents. When poured into your cooling system, it mixes with any existing antifreeze and flows to find the source of the leak. Through a catalytic process, the sealing agents bond with the metal surfaces, creating a long-lasting seal. This effective sealing technology allows drivers to mitigate leaks effortlessly and extend the life of their cooling system.
  • Question: Is K-Seal ST5501 compatible with all types of antifreeze?

    Answer: Yes, K-Seal ST5501 is designed to be compatible with all types of antifreeze, making it versatile for various vehicles. Whether your vehicle uses ethylene glycol, propylene glycol, or another type, K-Seal seamlessly mixes in without causing any adverse reactions. This means you can confidently use it without worrying about compatibility issues, making it a go-to solution for diverse vehicle coolant systems.
  • Question: Can K-Seal ST5501 be used in high-mileage vehicles?

    Answer: Certainly! K-Seal ST5501 is effective for high-mileage vehicles that may experience wear and tear, leading to coolant leaks. As gaskets and components age, they may develop cracks or weaknesses. K-Seal can help rejuvenate and repair these areas, providing a cost-effective alternative to extensive repairs for aging vehicles. It’s an excellent option for those looking to maintain their vehicle’s performance without breaking the bank.
  • Question: How much K-Seal ST5501 should I use for my vehicle?

    Answer: For most passenger vehicles, 8 oz of K-Seal ST5501 is sufficient to treat the entire cooling system. However, depending on the size of your cooling system and the severity of the leak, you might consider using additional bottles. It’s always recommended to follow the specific instructions on the product label and check your manual for guidelines regarding coolant quantities, ensuring optimal results.
  • Question: Can I use K-Seal ST5501 as a preventive measure?

    Answer: Yes, K-Seal ST5501 can also serve as a preventive measure against potential leaks. Regular application can help maintain your cooling system's integrity, especially in older vehicles or those prone to leaking. By incorporating K-Seal into your maintenance routine, you can reduce the likelihood of unexpected failures and prolong the life of your cooling components, keeping your vehicle running smoothly.
  • Question: Is K-Seal ST5501 easy to apply?

    Answer: Absolutely! Applying K-Seal ST5501 is as simple as pouring it into your vehicle's cooling system. There’s no need for flushing or complicated preparation, which makes it a convenient option for car owners who prefer to handle minor repairs themselves. Just ensure the engine is cool, locate the radiator or overflow reservoir, pour the entire contents, and start your engine for circulation. The user-friendly design makes it accessible for everyone.
  • Question: Are there any precautions to consider when using K-Seal ST5501?

    Answer: While K-Seal ST5501 is safe to use, it’s important to follow the product instructions closely. Ensure your engine is off and cool before application to prevent burns. Avoid using this product in systems already containing metal sealants or additives, as they may interfere with K-Seal's effectiveness. Additionally, for maximum results, check your vehicle’s manual for any specific guidance related to your cooling system.
  • Question: How long does it take for K-Seal ST5501 to seal leaks?

    Answer: Most users can expect K-Seal ST5501 to start sealing leaks shortly after application, typically within the first drive cycle. The unique formula works quickly to bond to metal surfaces and fill gaps, making it an efficient solution for immediate repairs. For best effectiveness, it is advisable to circulate the coolant by running the engine for a short period after application to ensure thorough distribution throughout the system.
  • Question: Where can I buy K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair?

    Answer: You can purchase K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair from Ubuy, an online platform that offers a wide range of automotive supplies. With Ubuy, you can browse comfortable options and have the product delivered right to your door, making it a convenient choice for maintaining your vehicle's cooling system.

K-Seal Cooling System Editorial Review

K-Seal is a coolant stop leak product that is designed to address a number of leaks a car might experience while preventing future ones. It's recommended for car owners who want to avoid costly repairs or who are experiencing small leaks in their system. Users can add the product to a hot or cold engine, depending on their preference. Several customers had a good experience with K-Seal, with one reviewer saying that it worked every time. Another customer mentioned that the product worked for them, saving them thousands of dollars in repair costs. Most people found it easy to use, and only a small amount is needed to work. Another reviewer mentioned that it stopped a coolant leak from the radiator and prevented the need to replace it. However, some customers were not happy with the product. One reviewer noticed that after adding K-Seal, they had coolant pouring everywhere in their car. Another user noted that the product did not work for them, albeit their coolant leak might have been too extensive for the product.

Customer Reviews & Ratings

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Pros

  • Provides an inexpensive fix for minor leaks
  • Prevents future leaks
  • Can add it to a hot or cold engine
  • Only a small amount is needed to fix a leak
  • Has worked for some customers, saving them costs of thousands of dollars in repair costs

Cons

  • Not all customers have had a good experience with the product

Platform Trust & Buyer Confidence

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4.3/5 9,000 + reviews
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MT
Mohd
Verified buyer

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

16 June 2026 · via Trustpilot
SJ
Shawati
Verified buyer

“Accurate delivery timing given”

16 June 2026 · via Trustpilot
YB
Youcef
Verified buyer

“Not madly expensive like I thought, and much quicker than promised.”

15 June 2026 · via Trustpilot
LM
Leila
Verified buyer

“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”

6/7/2026 · via Trustpilot
KA
Kwame
Verified buyer

“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”

12 June 2026 · via Trustpilot
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  • 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 140

Order now and get it around Thursday, July 16

QTY:

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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 need to drain or flush the engine.
  • Compatible with all types of antifreeze.
  • Can fix leaks in radiator, head gasket, freeze plugs, cylinder heads, heater core, water pump casing, and engine blocks.