--- product_id: 82132425 title: "K-Seal ST3501 Pour & Go Head Gasket Sealer, 16 oz – Repairs Blown Head Gaskets, Cracked Heads & Engine Blocks" brand: "k-seal" price: "₨1026" currency: SCR in_stock: true reviews_count: 13 category: "K Seal" url: https://www.desertcart.sc/products/82132425-k-seal-st3501-pour-and-go-head-gasket-sealer-16 store_origin: SC region: Seychelles --- # Universal coolant & engine compatibility 33% more sealing power Seals leaks up to 0.64mm K-Seal ST3501 Pour & Go Head Gasket Sealer, 16 oz – Repairs Blown Head Gaskets, Cracked Heads & Engine Blocks **Brand:** k-seal **Price:** ₨1026 **Availability:** ✅ In Stock ## Summary > 🛠️ Fix leaks fast, drive fearless—because your engine deserves the best! ## Quick Answers - **What is this?** K-Seal ST3501 Pour & Go Head Gasket Sealer, 16 oz – Repairs Blown Head Gaskets, Cracked Heads & Engine Blocks by k-seal - **How much does it cost?** ₨1026 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/82132425-k-seal-st3501-pour-and-go-head-gasket-sealer-16) ## 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 - • **Trusted by Millions:** Over 8 million bottles sold worldwide—join the community of confident drivers. - • **One-Step Leak Stopper:** Ceramic micro-fibres seal cracks and holes up to 0.64mm with zero engine impact. - • **Universal Engine Ally:** Compatible with all coolant types and engine materials, including heavy-duty machinery. - • **Effortless Application:** Pour & Go formula means no mechanic needed—fix your engine leak on your schedule. - • **Powerful Sealant Boost:** 33% more sealing power than standard formulas for rapid, durable repairs. ## Overview K-Seal ST3501 Pour & Go Head Gasket Sealer is a professional-grade coolant additive designed to repair blown head gaskets, cracked heads, and porous engine blocks. Featuring 33% more sealing power and ceramic micro-fibres, it effectively seals leaks up to 0.64mm without harming engine performance. Compatible with all coolant types and engine materials, this trusted formula has sold over 8 million bottles worldwide, offering a quick, reliable, and mechanic-free solution to cooling system leaks. ## Description Buy K-Seal ST3501 Pour & Go Head Gasket Sealer, 16 oz – Repairs Blown Head Gaskets, Cracked Heads & Engine Blocks: Cooling System - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Not going to lie, I did not really expect this to actually work. - Jeep Wrangler 4.0 Inline 6. Had an issue with a piston and suffered a catastrophic failure. Disassembled engine, and replaced piston, then reassembled with a fresh head gasket. Did not plane block or head, just put it back together. Engine ran fine, but I noticed lack of coolant system pressurizing, and I was refilling the radiator daily. I found a pressure leak near number 1 cylinder, which was causing significant coolant loss when engine was operating. My head was either damaged or I nicked the gasket when putting it back together by myself. Which is possible, that head is heavy and awkward. Anyway, after a lot of reviews and research, I selected K-seal. I followed instructions and added it directly to radiator. It has small copper looking flakes in it, and at first I thought it was a waste of time, because after pouring it in, and going for a drive I saw the same small flakes on the inner fender where the steam from the leak was coming from. Then after a few more days, I noticed that my cooling system was fully pressurized when hot, and the coolant was not disappearing every day. It has been about three weeks and several hundred miles, and it is solid as a rock. No coolant leak, smell or refill needed. Very impressed, this really worked. Review: Worked on Chevy 5.7 - Had bad coolant blowing out the exhaust on my 1989 Chevy 5.7 K1500 111k miles. Not just steam but coolant as well. Used K Seal and it did not work. So pulled heads sent to machine shop that checked them and said no faults found. Heads milled, inspected cylinders, nothing found. In fact old cylinder head gaskets and intake gaskets were okay. Re-assembly did not touch the exhaust. Just as bad. I again used K Seal. Forget the 3-5 minute idle, did not work. So allowed it to cold soak overnight. Next day ran it on the road with it blowing steam all the way. Let it cold soak overnight. Next day leak was gone. Went for drive and no smoke. Mind you this was just day one, but given the severity of the leak, this looks promising. Still not sure why it worked on the second can and not the first. I lost a lot of coolant when I pulled the heads, but it is possible enough residue of the first can of K Seal remained. My current thinking is that the problem may be a crack in the intake manifold and not the block. This is because the engine did not blow coolant before I changed the intake manifold gaskets a few weeks prior just as routine maintenance. The manifold EGR passage was totally clogged with carbon which I removed. It is possible this carbon may have sealed the crack in the manifold. Chevy manifolds have massive exhaust and coolant passages that run parallel to each other and a defective EGR system could generate excessive heat that cracks the manifold internally. This would allow coolant to get into the exhaust. ## 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 | #10,819 in Automotive ( See Top 100 in Automotive ) #4 in Cooling System Additives | | Brand | K-Seal | | Customer Reviews | 4.2 4.2 out of 5 stars (2,132) | | Date First Available | November 14, 2014 | | Item Weight | 1 pounds | | Item model number | KSLST3501 | | Manufacturer | Solv-Tec | | Manufacturer Part Number | KSLST3501 | | Model | ST3501 | | Product Dimensions | 2.5 x 2.5 x 8 inches | ## Images ![K-Seal 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) ![K-Seal 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) ![K-Seal 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) ![K-Seal 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) ![K-Seal 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! ## Customer Reviews ### ⭐⭐⭐⭐⭐ Not going to lie, I did not really expect this to actually work. *by S***O on January 25, 2025* Jeep Wrangler 4.0 Inline 6. Had an issue with a piston and suffered a catastrophic failure. Disassembled engine, and replaced piston, then reassembled with a fresh head gasket. Did not plane block or head, just put it back together. Engine ran fine, but I noticed lack of coolant system pressurizing, and I was refilling the radiator daily. I found a pressure leak near number 1 cylinder, which was causing significant coolant loss when engine was operating. My head was either damaged or I nicked the gasket when putting it back together by myself. Which is possible, that head is heavy and awkward. Anyway, after a lot of reviews and research, I selected K-seal. I followed instructions and added it directly to radiator. It has small copper looking flakes in it, and at first I thought it was a waste of time, because after pouring it in, and going for a drive I saw the same small flakes on the inner fender where the steam from the leak was coming from. Then after a few more days, I noticed that my cooling system was fully pressurized when hot, and the coolant was not disappearing every day. It has been about three weeks and several hundred miles, and it is solid as a rock. No coolant leak, smell or refill needed. Very impressed, this really worked. ### ⭐⭐⭐⭐⭐ Worked on Chevy 5.7 *by L***. on July 4, 2024* Had bad coolant blowing out the exhaust on my 1989 Chevy 5.7 K1500 111k miles. Not just steam but coolant as well. Used K Seal and it did not work. So pulled heads sent to machine shop that checked them and said no faults found. Heads milled, inspected cylinders, nothing found. In fact old cylinder head gaskets and intake gaskets were okay. Re-assembly did not touch the exhaust. Just as bad. I again used K Seal. Forget the 3-5 minute idle, did not work. So allowed it to cold soak overnight. Next day ran it on the road with it blowing steam all the way. Let it cold soak overnight. Next day leak was gone. Went for drive and no smoke. Mind you this was just day one, but given the severity of the leak, this looks promising. Still not sure why it worked on the second can and not the first. I lost a lot of coolant when I pulled the heads, but it is possible enough residue of the first can of K Seal remained. My current thinking is that the problem may be a crack in the intake manifold and not the block. This is because the engine did not blow coolant before I changed the intake manifold gaskets a few weeks prior just as routine maintenance. The manifold EGR passage was totally clogged with carbon which I removed. It is possible this carbon may have sealed the crack in the manifold. Chevy manifolds have massive exhaust and coolant passages that run parallel to each other and a defective EGR system could generate excessive heat that cracks the manifold internally. This would allow coolant to get into the exhaust. ### ⭐⭐⭐⭐⭐ IT ACTUALLY WORKED ! *by M***N on June 5, 2026* It took about two weeks but it finally sealed the Head Gasket on my daughters 1998 3.8 liter Mustang. It did not damage the heater core or thermostat. I kept in contact with the manufacturer on the proper way to repair this head gasket. I was also told that I can flush the cooling system if I so choose and that it would not affect the repair. Money well spent! ## 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? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sc/products/82132425-k-seal-st3501-pour-and-go-head-gasket-sealer-16](https://www.desertcart.sc/products/82132425-k-seal-st3501-pour-and-go-head-gasket-sealer-16) --- *Product available on Desertcart Seychelles* *Store origin: SC* *Last updated: 2026-08-14*