--- product_id: 40196558 title: "Combustion Leak Test Kit - Made in USA BT-500" brand: "block tester" price: "$137.73" currency: USD in_stock: true category: "Block Tester" url: https://www.desertcart.ec/products/40196558-combustion-leak-test-kit-made-in-usa-bt-500 store_origin: EC region: Ecuador --- # 16 tests per kit Results in seconds Made in USA, 45+ years Combustion Leak Test Kit - Made in USA BT-500 **Brand:** block tester **Price:** $137.73 **Availability:** ✅ In Stock ## Summary > 🔍 Don’t guess—know your engine’s health in seconds! ## Quick Answers - **What is this?** Combustion Leak Test Kit - Made in USA BT-500 by block tester - **How much does it cost?** $137.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/40196558-combustion-leak-test-kit-made-in-usa-bt-500) ## Best For - block tester enthusiasts ## Why This Product - Trusted block tester brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Organized:** Comes in a durable storage box to keep your testing kit neat and protected - • **All-in-One Ready Kit:** Includes fluid and components—no extra purchases needed to start testing - • **Instant Leak Detection:** Fluid changes color from blue to yellow for clear, immediate results - • **Trusted American Craftsmanship:** Manufactured in the USA for over 45 years with a limited lifetime warranty - • **Universal Engine Compatibility:** Works seamlessly with gasoline, diesel, propane, natural gas & alternative fuels ## Overview The BT-500 Head Gasket Combustion Leak Test Kit is a professional-grade, all-inclusive diagnostic tool made in the USA for over 45 years. It delivers instant, easy-to-read results by changing fluid color to detect combustion leaks caused by head gasket failure or engine damage. Compatible with virtually all liquid-cooled internal combustion engines, this kit offers up to 16 precise tests per refill and comes in a convenient storage box, making it the go-to choice for reliable, fast leak detection. ## Description Block Tester BT-500 Combustion Leak Test Kit ## Features - Complete Combustion Leak Test Kit: Includes fluid and all necessary components with nothing more to buy for immediate testing - Easy Visual Indicator: Fluid turns from blue to yellow when combustion leak is present, providing clear and instant results - Comprehensive Leak Detection: Tests in seconds for combustion leaks caused by blown head gasket, cracked head or block, pulled bolts or studs, and warped sealing surfaces - Quality American Manufacturing: Made in USA for over 45 years with limited lifetime warranty ensuring long-lasting reliability - Convenient Storage Solution: Comes in a box suitable for tool storage to keep your kit organized and protected - Versatile Engine Compatibility: Works with virtually any liquid-cooled internal combustion engine including gasoline, diesel, propane, natural gas and alternative fuel engines with closed cooling systems - Efficient Testing Capacity: Includes enough fluid to conduct 16 tests with large single-chamber design that provides greater accuracy while using less test fluid ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06VVBSFTF | | Best Sellers Rank | #5,326 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Leak Detection Tools | | Brand | Block Tester | | Customer Reviews | 4.7 4.7 out of 5 stars (3,618) | | Date First Available | April 2, 1971 | | Item Weight | 1 pounds | | Item model number | BT-500 | | Manufacturer | Block Tester | | Manufacturer Part Number | BT-500 | | Model | BT-512 | | Product Dimensions | 10 x 3 x 5 inches | ## Product Details - **Brand:** Block Tester - **Color:** Black309 - **Item Weight:** 16 ounces - **Power Source:** Battery Powered - **Style:** Tragbar ## Images ![Combustion Leak Test Kit - Made in USA BT-500 - Image 1](https://m.media-amazon.com/images/I/61OogEXI8AL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can this be used to diagnose an exhaust leak?** A: While the tool will detect exhaust gases (fluid turns from blue to yellow while squeezing the bulb), it probably wouldn't be able to pinpoint exactly where the leak is coming from. But, it may be useful in ruling out an underhood exhaust leak if you're trying to determine whether or not a particular sound (like ticking) is caused by an exhaust leak or some other mechanical problem. **Q: How do i clean the the tube after use. Does any tester fluid leak into coolent while testing?** A: You can pop the top cap off and rinse it with water (distilled water if preferred if you have it handy). Tester fluid won't leak down into the coolant as there is a one-way valve in the cone end. Even if test fluid does somehow get into the coolant, there will be no adverse effects. **Q: Can it be use for diesel fuel engine?** A: Yes, it works on diesel engines. A positive test might show a greenish-yellow color to the fluid rather than the full transition to yellow that you'd see when testing a gasoline engine with a combustion leak. **Q: Does the engine have to be running to work or can we turn the engine over and over to test. will not start, we want to be certain of HG before scrap** A: I understand your concern. The block Tester detects combustion gases in the coolant system. It will not work if there is no combustion. I would say, if it is igniting the fuel in all cylinders while cranking, but will not remain running it may bleed enough combustion carbons into the coolant system. However, I honestly do not think it will work unless it is running. This block tester is only for head gasket combustion carbon leaks into the coolant system. It is not for head gasket leaks that result in water leaving through the exhaust system. I hope this helps. ## Frequently Bought Together - Block Tester BT-500 Head Gasket Combustion Leak Test Kit - Made in USA - Bar's Leaks HG-1 HEAD SEAL Blown Head Gasket Repair - K-Seal ST3501 Pour and Go Head Gasket Sealer, 16oz, Permanent Repair for Blown Head Gaskets, Cracked Heads and Blocks --- ## 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.ec/products/40196558-combustion-leak-test-kit-made-in-usa-bt-500](https://www.desertcart.ec/products/40196558-combustion-leak-test-kit-made-in-usa-bt-500) --- *Product available on Desertcart Ecuador* *Store origin: EC* *Last updated: 2026-09-30*