--- product_id: 82132425 title: "ST3501 Pour & Go Head Gasket Sealer, 16 oz – Repairs Blown Head Gaskets, Cracked Heads & Engine Blocks" brand: "k-seal" price: "S$60" currency: SGD in_stock: true url: https://www.desertcart.sg/products/82132425-st3501-pour-and-go-head-gasket-sealer-16-oz-repairs store_origin: SG region: Singapore --- # Compatible with all coolants & engines 33% more sealing power Seals leaks up to 0.64mm ST3501 Pour & Go Head Gasket Sealer, 16 oz – Repairs Blown Head Gaskets, Cracked Heads & Engine Blocks **Brand:** k-seal **Price:** S$60 **Availability:** βœ… In Stock ## Summary > πŸ› οΈ Seal the deal before your engine feels the heat! ## Quick Answers - **What is this?** ST3501 Pour & Go Head Gasket Sealer, 16 oz – Repairs Blown Head Gaskets, Cracked Heads & Engine Blocks by k-seal - **How much does it cost?** S$60 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/82132425-st3501-pour-and-go-head-gasket-sealer-16-oz-repairs) ## Best For - k-seal enthusiasts ## Why This Product - Trusted k-seal brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Trusted by Millions:** Over 8 million bottles sold worldwideβ€”join the community of savvy car owners who refuse downtime. - β€’ **Pour & Go Simplicity:** No mess, no fussβ€”just pour in and get back on the road faster than ever. - β€’ **Universal Engine Ally:** Works seamlessly with all coolant types and engine materials, including heavy-duty machinery. - β€’ **One-Step Leak Lockdown:** Unique ceramic micro-fibres seal cracks and holes up to 0.64mm with zero engine impact. - β€’ **Fix It Fast, Drive Longer:** Advanced formula delivers 33% more sealing power than standard K-Seal for durable repairs. ## Overview K-Seal ST3501 is a powerful 16 oz head gasket sealer that repairs blown head gaskets, cracked heads, and porous engine blocks. Featuring 33% more sealing power and ceramic micro-fibres, it stops leaks up to 0.64mm in a single step. Compatible with all coolant types and engine materials, it’s trusted globally with over 8 million bottles sold, making it the go-to quick fix for professional-grade engine maintenance. ## Description One Step Coolant Leak Repair is a global specialist in coolant leak repair solutions. Since 2003, K-Seal has sold millions of bottles worldwide and is trusted by professional technicians and leading roadside recovery organizations. Made in the USA, K-Seal works in all water-cooled engines, from motorcycles and cars to trucks and heavy-duty vehicles. K-Seal gives drivers a fast, simple way to help fix coolant leaks without draining, flushing, or complicated repairs. Just shake, pour, and go to help get back on the road quickly. Our proprietary ceramic formula mixes with all types of antifreeze and coolant and helps seal leaks in the radiator, head gasket, block, heater core, and other hard parts. Once added to the cooling system, K-Seal usually begins working within minutes to help stop leaks quickly and easily. KK-Seal helps repair coolant leaks fast. No draining or flushing needed β€” just shake, pour, and go. K-Seal Ultimate targets tougher head gasket and cooling system leaks with a ceramic formula that mixes with coolant. K-Seal HD is built for larger cooling systems in trucks, RVs, tractors, and heavy-duty vehicles. K-Seal Coolant Leak Repair K-Seal Head Gasket Repair K-Seal HD Coolant Leak Repair Best Application For everyday coolant leaks in cars, motorcycles, and light trucks. Best Application For head gasket leaks, cracked heads, and porous block problems. Best Application For larger engines, HGVs, tractors, heavy plant, and commercial vehicles. Shake, Pour & Go Easy one-step formula. Just shake, pour, and go. No draining or flushing needed. Shake, Pour & Go Simple pour-and-go formula for head gasket and block repair. Shake, Pour & Go Heavy-duty pour-and-go formula designed for larger cooling systems. Seals Common Leaks Helps seal leaks in radiators, heater cores, water pumps, freeze plugs & blocks. Seals Common Leaks Helps repair blown head gaskets, cracked heads, and porous blocks. Seals Common Leaks Helps seal leaks in radiators, head gaskets, heater cores, water pumps & blocks. Coolant Compatible Works with all types of antifreeze and coolant. Coolant Compatible Works with all water-cooled engines and common coolant types. Coolant Compatible Compatible with antifreeze and coolant systems in larger engines. System Capacity 8 fl. oz. bottle treats cooling systems up to 20 quarts. System Capacity 16 fl. oz. bottle for head gasket and block repair applications. System Capacity 16 fl. oz. bottle treats larger cooling systems up to 60 quarts. ## Features - FIX IT FAST: Our advanced formula with 33% more sealing power than regular K-Seal, ensures a long-lasting, seal for challenging leaks. Fixes blown head gaskets, cracked heads & porous engine blocks in cars - STOP HOLES & CRACKS: With just 1 step our unique formula with ceramic micro-fibres, will seal leaks up to 0.64mm in size, without any adverse impact on the engine - VERSATILE COMPATIBILITY: Works with all types of coolant & compatible with a wide range of vehicle engine materials & heavy duty machinery. - Attention: If you notice bubbles coming from the radiator or coolant reservoir, or if K-Seal engine coolant stop leak is not sealing, the system might be over-pressurized. Refer to the Technical Specification section of this page for additional instructions to ensure a successful repair. Over 8 million bottles sold worldwide! ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B00QYZIVA6 | | Best Sellers Rank | #6,935 in Automotive (See Top 100 in Automotive) #2 in Cooling System Additives | | Brand | K-Seal | | Customer Reviews | 4.1 4.1 out of 5 stars (2,173) 4.1 out of 5 stars | | Date First Available | November 14, 2014 | | Item Model Number | KSLST3501 | | Item Weight | 1 pounds | | Manufacturer | Solv-Tec | | Manufacturer Part Number | KSLST3501 | | Model | ST3501 | | Product Dimensions | 2.5 x 2.5 x 8 inches | ## Images ![ST3501 Pour & Go Head Gasket Sealer, 16 oz – Repairs Blown Head Gaskets, Cracked Heads & Engine Blocks - Image 1](https://m.media-amazon.com/images/I/71G2FkNC+6L.jpg) ![ST3501 Pour & Go Head Gasket Sealer, 16 oz – Repairs Blown Head Gaskets, Cracked Heads & Engine Blocks - Image 2](https://m.media-amazon.com/images/I/719pklLDFtL.jpg) ![ST3501 Pour & Go Head Gasket Sealer, 16 oz – Repairs Blown Head Gaskets, Cracked Heads & Engine Blocks - Image 3](https://m.media-amazon.com/images/I/81Zm3eLvz4L.jpg) ![ST3501 Pour & Go Head Gasket Sealer, 16 oz – Repairs Blown Head Gaskets, Cracked Heads & Engine Blocks - Image 4](https://m.media-amazon.com/images/I/81P90sxsT6L.jpg) ![ST3501 Pour & Go Head Gasket Sealer, 16 oz – Repairs Blown Head Gaskets, Cracked Heads & Engine Blocks - Image 5](https://m.media-amazon.com/images/I/81TH6YLrJtL.jpg) ## Questions & Answers **Q: Is it okay to continue to idle the car with engine and brake lights on with liquid coming out of radiator? It says to idle for 20 minutes** A: The system should be sealed as the product circulates though it for the 20 minutes. **Q: Does it use Sodium Silicate?** A: Nowhere on the bottle does it say sodium silicate. **Q: I have a 1999 ford ranger. running fine now but it is getting older. can i use this as a preventative? or do i need to wait for a problem to show up?** A: The way K seal works is by seeking out leaks in a pressurized system. I feel you or best bet would be to wait until you know your leaking coolant. I use this in a truck about 7 months ago and I still have no problems with the truck. Work very well **Q: can i make a 100 make a 100 mile trip 10 minuets after i put the k-seal in...** A: Yes! It does it's magic within 10 minutes. Just don't drive it too hard for about 20 minutes. Drive smooth. Highway driving or a good road with a consistent speed is best. After 20 minutes, you are all good! ## Frequently Bought Together - K-Seal ST3501 Pour and Go Head Gasket Sealer, 16oz, Permanent Repair for Blown Head Gaskets, Cracked Heads and Blocks - K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required - K-Seal ST5516 Heavy-Duty Multi-Purpose One Step Permanent Coolant Leak Repair, 16 oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/82132425-st3501-pour-and-go-head-gasket-sealer-16-oz-repairs](https://www.desertcart.sg/products/82132425-st3501-pour-and-go-head-gasket-sealer-16-oz-repairs) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-28*