--- product_id: 316881920 title: "BT-500 Combustion Leak Test Kit" brand: "block tester" price: "€ 112.98" currency: EUR in_stock: true reviews_count: 8 category: "Block Tester" url: https://www.desertcart.hr/products/316881920-bt-500-combustion-leak-test-kit store_origin: HR region: Croatia --- # Tests leaks in seconds Made in USA, OEM quality Color change indicates leak BT-500 Combustion Leak Test Kit **Brand:** block tester **Price:** € 112.98 **Availability:** ✅ In Stock ## Summary > 🔧 Don’t let hidden leaks drain your engine or your wallet! ## Quick Answers - **What is this?** BT-500 Combustion Leak Test Kit by block tester - **How much does it cost?** € 112.98 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/316881920-bt-500-combustion-leak-test-kit) ## 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 - • **All-Inclusive Kit:** Comes complete with fluid—no extra purchases needed. - • **Trusted OEM Packaging:** Packaged in official white box for guaranteed authenticity. - • **Versatile Diagnostics:** Detects blown head gaskets, cracked blocks, warped seals, and more. - • **Clear Visual Indicator:** Fluid shifts from blue to yellow, making leaks unmistakable. - • **Instant Leak Detection:** Get results in seconds—no more guessing under the hood. ## Overview The BT-500 Combustion Leak Test Kit offers rapid, reliable detection of combustion leaks with a simple color-changing fluid indicator. Designed for professionals and DIYers alike, this all-in-one kit requires no additional purchases and is packaged in OEM quality. Made in the USA, it accurately diagnoses issues like blown head gaskets and cracked engine blocks, helping you avoid costly repairs before they escalate. ## Description Block Tester BT-500 Combustion Leak Test Kit Review: يعطي نتيجه فوريه ينصح به كمنتج موثوق وعملي اللون الازرق يتحول للاصفر بمجرد اختلاطه بثاني اكسيد الكربون، لاتوجد ملاحظات على المنتج وحجم عبوة السائل كبيره ويمكن تجربته على اكثر من ٢٠ سياره تقريبا ينفع هذا الحجم للورش، اما الفرد يحتاج الى حجم اصغر من هذا بكثير Review: takes some time to change colour (test it on exhaust gas) - cool idea. helps diagnose leaky head gasket. easy to use but the colour change isnt as big as i expected. test it on car exhaust gas if the head tests good to be sure fluid changes ## Features - Complete Combustion Leak Test Kit - Includes Fluid - Nothing More to Buy - When Fluid Turns From BLUE to YELLOW Combustion Leak is Present - Tests in seconds for combustion leaks caused by: Blown Head Gasket (BHG) Cracked Head or Block Pulled Bolts or Studs Warped Sealing Surfaces - Packaged in OEM white box ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06VVBSFTF | | ASIN | B06VVBSFTF | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #9,277 in Automotive ( See Top 100 in Automotive ) #3 in Automotive Fuel Leak Detectors | | Color | Black309 | | Country of origin | USA | | Customer Reviews | 4.6 4.6 out of 5 stars (3,422) | | Customer reviews | 4.6 4.6 out of 5 stars (3,422) | | Date First Available | 22 September 2017 | | Date First Available | 22 September 2017 | | Included components | Block Tester BT-500 Combustion Leak Test Kit | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 454 g | | Item model number | BT-500 | | Item model number | BT-500 | | Manufacturer | Block Tester | | Manufacturer | Block Tester | | Measurement Accuracy | +/- 0.5% | | Part number | BT-500 | | Power source type | Battery Powered | | Product Dimensions | 25.4 x 7.62 x 12.7 cm; 453.59 g | | Product Dimensions | 25.4 x 7.62 x 12.7 cm; 453.59 g | | Size | SD407 | | Style | Tragbar | ## Product Details - **Brand:** Block Tester - **Power source:** Battery Powered - **Style:** Tragbar - **Colour:** Black309 - **Item weight:** 454 g ## Images ![BT-500 Combustion Leak Test Kit - Image 1](https://m.media-amazon.com/images/I/61OogEXI8AL.jpg) ## 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***N on 20 March 2026* يعطي نتيجه فوريه ينصح به كمنتج موثوق وعملي اللون الازرق يتحول للاصفر بمجرد اختلاطه بثاني اكسيد الكربون، لاتوجد ملاحظات على المنتج وحجم عبوة السائل كبيره ويمكن تجربته على اكثر من ٢٠ سياره تقريبا ينفع هذا الحجم للورش، اما الفرد يحتاج الى حجم اصغر من هذا بكثير ### ⭐⭐⭐⭐⭐ takes some time to change colour (test it on exhaust gas) *by M***M on 10 February 2022* cool idea. helps diagnose leaky head gasket. easy to use but the colour change isnt as big as i expected. test it on car exhaust gas if the head tests good to be sure fluid changes ### ⭐⭐⭐⭐ Easy use *by D***M on 12 September 2025* Good ## 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.hr/products/316881920-bt-500-combustion-leak-test-kit](https://www.desertcart.hr/products/316881920-bt-500-combustion-leak-test-kit) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-23*