Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Experience the ultimate solution to coolant leaks with the K-Seal ST5516 HD, a multi-purpose, one-step permanent coolant leak repair. Our powerful formula works seamlessly with all antifreeze, making it a universal fit type for all your needs. No need for draining or flushing your system. This heavy-duty sealer was designed specifically for HGVs, tractors, heavy plant and other commercial vehicles. The K-Seal ST5516 HD, also known as a head gasket stop leak, works by sealing leaks efficiently and permanently. It also doubles as a radiator stop leak, effectively putting an end to any leaks in your radiator. The permanent leak sealer is easy to use - just shake, pour, and go. This product excels in fixing cracks and leaks in several components including the radiator, head gasket, freeze plugs, cylinder heads, heater core, water pump casing, and engine blocks. With a single 8 fluid ounce bottle of our coolant leak sealer, you can treat up to 20 quarts cooling capacity. This heavy duty stop leak sealant is a must-have for all your coolant leak issues. So, forget your coolant leak worries with the K-Seal ST5516 HD. Experience the power of a seal stop leak that stops leaks permanently, offering peace of mind and extended life for your vehicle's cooling system. Trust the K-Seal coolant leak repair for a lasting solution to all your coolant leak problems.
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
Frequently Asked Questions
Q: How does K-Seal ST5516 work to stop coolant leaks?A: K-Seal ST5516 uses a unique formula that seeks out and seals cracks and holes in the cooling system components, such as the radiator, head gasket, and water pump. It creates a permanent seal upon application, preventing further leaks without requiring any draining or flushing.
Q: Is K-Seal ST5516 compatible with all types of antifreeze?A: Yes, K-Seal ST5516 is designed to mix with all types of antifreeze, making it a universal solution for coolant leak repair in various vehicles, including heavy-duty and commercial vehicles.
Q: How do I use K-Seal ST5516 for best results?A: Using K-Seal ST5516 is simple: just shake the bottle, pour it into your coolant system, and run your engine as normal. There’s no need for draining or flushing, allowing for a quick and easy application.
Q: What types of vehicles can benefit from K-Seal ST5516?A: K-Seal ST5516 is engineered for heavy-duty applications and is suitable for a wide range of vehicles, including HGVs, tractors, and other commercial or agricultural vehicles, making it an ideal choice for those in need of a reliable coolant leak repair.
Q: How long does K-Seal ST5516 last once applied?A: K-Seal ST5516 provides a permanent repair for the lifetime of the engine, ensuring that once the leaks are sealed, you can enjoy peace of mind without worrying about recurring coolant issues.
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