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Item #:
451188
ST3501 Pour & Go Head Gasket Sealer, 16 oz Repairs Blown Head Gaskets, Cracked Heads & Engine Blocks
89% of respondents would recommend this to a friend
Item #:
451188
ZAR 667
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Imported from USA store
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Fixes blown head gaskets, cracked heads and blocks. A permanent repair, guaranteed for the lifetime of the engine. The Safe and Easy Way to Fix a Coolant Leak.
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What Stands Out
Permanent Solution
K-Seal offers a lasting repair for blown head gaskets and cracked engines, eliminating the need for costly mechanical repairs and providing peace of mind for car owners.
Easy Application
This pour-and-go formula simplifies the repair process, allowing users to effectively seal leaks without complex tools or professional assistance, saving both time and effort.
Versatile Compatibility
Compatible with all types of automotive coolants and engines, K-Seal ensures you can effectively seal head gasket issues across various vehicles, enhancing its utility for diverse car owners.
Product Details
- 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!
| Package Weight | 2 Pound |
Product Technical Details
| Manufacturer | Solv-Tec |
| Brand | K-Seal |
| Model | ST3501 |
| Item Weight | 1 pounds |
| Product Dimensions | 2.5 x 2.5 x 8 inches |
| Item model number | KSLST3501 |
| Manufacturer Part Number | KSLST3501 |
What's in the box
K-Seal ST3501 Pour & Go Head Gasket Sealer, 16 oz
Who Should Buy?
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Budget-Conscious Drivers
Ideal for those seeking an affordable, quick solution for minor head gasket issues without extensive repairs.
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DIY Mechanics
Great for car enthusiasts comfortable with a simple pouring technique to address cooling system leaks efficiently.
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Older Vehicles
Useful for aging cars experiencing leaks, extending their lifespan without significant investments in repairs.
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Severe Damage
Not suitable for vehicles with major head gasket failures that require professional mechanical intervention.
Product Description
About This Item
Introducing the KALIMEX LTD K-Seal ST3501 Pour and Go Permanent Head Gasket and Block Repair, the ultimate solution for anyone experiencing blown head gaskets, cracked heads, or porous engine blocks. With K-Seal Ultimate, you can say goodbye to expensive repairs and lengthy downtime. Our unique formula is designed to work with all water-cooled engines, making it compatible with any antifreeze or coolant you've previously used.
No need to drain or flush your cooling system – simply shake the bottle and pour K-Seal Ultimate into your engine. You'll be back on the road in no time with just one bottle of K-Seal Ultimate. It's powerful enough to fix blown head gaskets and cracked heads in cars, SUVs, and small trucks.
For larger engines, like those in heavy-duty trucks or industrial machinery, simply use two bottles to ensure a permanent repair. Stop worrying about coolant leaks and engine damage. K-Seal ST3501 is a reliable automotive engine coolant sealant that delivers long-lasting results.
It effectively repairs your head gasket and engine block, sealing any leaks and preventing further damage. In addition to offering a permanent engine coolant sealing solution, K-Seal ST3501 also acts as a radiator sealant. It's a smart choice for anyone looking to fix coolant leaks quickly and efficiently.
By using K-Seal Pour and Go, you're not only addressing a pressing issue but also investing in your engine's overall health and longevity. Regular cooling system maintenance is crucial for optimal engine performance, and K-Seal is here to make it easier for you. Don't wait for your engine to overheat or suffer from costly repairs.
Choose K-Seal ST3501, the trusted brand for automotive engine repair products. Our reputation for reliability and effectiveness speaks for itself. Take control of your car's maintenance and ensure its smooth operation with KALIMEX LTD K-Seal ST3501 Pour and Go Permanent Head Gasket and Block Repair.
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Customer Questions & Answers
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Question:
How to Shop ST3501 Pour & Go Head Gasket Sealer, 16 oz Repairs Online From Ubuy?
Answer: It’s easy to shop ST3501 Pour & Go Head Gasket Sealer, 16 oz Repairs online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location. -
Question:
Is ST3501 Pour & Go Head Gasket Sealer, 16 oz Repairs Available to Shop Online in South Africa?
Answer: Yes, at Ubuy South Africa this product is available for you to shop at a reasonable price. The ST3501 Pour & Go Head Gasket Sealer, 16 oz Repairs is not available locally but you can trust us with our express shipping services. -
Question:
How Long Does It Take to Get Product After Placing the Order?
Answer: The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.
K-Seal Cooling System KSLST3501 Editorial Review
K-Seal is a product that seeks out leaks in a pressurised system and works by sealing the leak in the cooling system at a bad head gasket or cracked head. It can be used as a preventative measure as it seals any leaks present in the system when the product circulates through it for 20 minutes. The product has received mixed reviews from users, some of whom were happy with the product, while others had negative experiences. Some users reported that their issue was successfully resolved and that the product stopped the leak from the engine, while others had problems after using the product, such as overheating and smoke from the exhaust.
Customer Reviews & Ratings
2129 customers ratings
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5 Star
65%
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4 Star
11%
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3 Star
10%
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2 Star
4%
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1 Star
10%
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Pros
- Can effectively fix a leak in the cooling system and possibly prevent future leaks
- Easy to use and relatively inexpensive compared to other repair options
- Works within 10 minutes
Cons
- Not guaranteed to work for everyone, some users reported little to no change after using the product
Top selling Head Gasket Sealer in {{COUNTRY_NAME}}
Last Updated on August 8, 2026
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Features & Benefits
- Fixes head gaskets, cracked heads and blocks.
- Permanent repair guaranteed for engine’s lifetime.
- Safe and easy solution for coolant leak.
- Scientifically tested and proven at Brighton University.
- No need for expensive head gasket repairs.
- PDF guide with instructions for successful repair.
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