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🚀 Seal leaks fast, keep your engine unstoppable!
K-Seal ST5516 is a 16 oz heavy-duty coolant leak repair solution designed for rapid, one-step sealing of leaks in radiators, head gaskets, freeze plugs, blocks, heater matrices, and water pumps. Compatible with all antifreeze types and requiring no flushing, it’s engineered for large engines in commercial and agricultural vehicles, delivering trusted, industrial-strength performance.





| Asin | B002BJEG3U |
| Best Sellers Rank | #8,669 in Automotive (See Top 100 in Automotive) #52 in Antifreezes & Coolants |
| Brand | K-Seal |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,700) 4.4 out of 5 stars |
| Date First Available | May 29, 2009 |
| Item Model Number | ST5516HD |
| Item Weight | 1.19 pounds |
| Manufacturer | Solv-Tec |
| Manufacturer Part Number | ST5516 |
| Model | ST5516HD |
| Product Dimensions | 5.9 x 4.1 x 1.9 inches |
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