The Best Block Tester of 2022 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best Block Tester of 2022. Check our ranking below.
2,015 Reviews Scanned
SaleRank No. #1
Block Tester BT-500 Head Gasket Combustion Leak Test Kit - Made in USA
- 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
- Quality Tool Made in USA for over 45 years with Limited Lifetime Warranty
- Comes in a box suitable for tool storage.
Rank No. #2
Gold Label Detailing Combustion Leak Detector Kit - 100+ Tests Automotive Engine Block and Head Gasket Tester, Ideal for Detecting Blown Gaskets (Tester with 16.9oz Fluid)
- The Gold Label Detailing Combustion Leak Tester and Head Gasket Leak Tester is a must-have tool for any professional auto mechanic looking for a reliable and efficient way to detect internal engine combustion leaks and blocks quickly and easily.
- This Block Test Kit is designed for professional auto mechanics and DIY'ers who require a high-quality detector test to identify potential problems in their engines.
- The heavy duty head gasket test is a smart addition to your toolbox, as it can help you speed up the identification of head gasket leaks and blocks, allowing you to make repairs sooner rather than later
- With its easy-to-use design and clear instructions, this leak tester is perfect for both novice and experienced auto mechanics and DIY'ers.
- Whether you're working on a car, truck, or other vehicle, the Gold Label Detailing Combustion Leak Tester and Head Gasket Leak Tester is a reliable tool that can help you save time and money on repairs.
SaleRank No. #3
Combustion Leak + Head Gasket Test Kit - Over 100 Tests - Includes 8oz Leak-Detection Fluid, Tester + Nozzle - Made in USA - Detect Leaks Quickly For Most Engine Systems - Fuel, Boost, Coolant & More
- Over 100 Tests Per Kit: Keep your engine’s health and performance in peak shape with this Combustion Leak + Head Gasket Test Kit, including an 8oz bottle of leak test fluid. With enough fluid to test over 100 times, you can regularly check for leaks to prevent severe engine damage and maintain optimal performance
- Accurate Detection in Seconds: Easily identify combustion leaks from head gaskets, cylinder heads, and engine blocks, ensuring your engine runs smoothly. Leak Test fluid changes from purple to yellow in seconds once CO2 is detected, meaning you can test for leaks with confidence
- Easy & Essential Engine Maintenance: Leak tester + nozzle designed to fit multiple engine parts across a variety of vehicles, including cars, trucks, motorcycles, tractors, excavators, forklifts, and more. Simply follow the included instructions for a hassle-free testing process. Perfect for both professional mechanics and DIY car enthusiasts
- Instant Leak-Detection Formula: Our advanced chemical formulation changes color in the presence of CO2 carbon dioxide, providing clear and immediate results for head gaskets, combustion leaks, and exhaust, coolant, boost and fuel systems
- Made in the USA: Combustion Leak + Head Gasket Test Kit is produced and bottled in the USA, ensuring it meets the highest quality standards. We take pride in knowing our customers get the best possible product
SaleRank No. #4
RELD Head Gasket Tester Kit Combustion Leak Detector for 50 Tests
- The original head gasket tester kit of the reputable brand “RELD”
- Produced in the European Union. The efficiency is 99.9%.
- Fast and convenient. Most importantly you can check whether the head gasket of your car is fully functional without visiting the mechanic.
- If the head gasket looks damaged, you can check it yourself and save time and money.
- Thanks to the universal adapter with a wide measuring range (25-55 mm), we can check among other things: cars, trucks, road tractors, excavators, motorcycles and forklifts.
Rank No. #5
UView 560000 Automotive Combustion Leak Test Kit for Head Gaskets, Cylinder Heads and Engine Block Leaks, Gas/Diesel Engines, Dual-Chamber Tester Filters Alkaline Particles, 16oz Testing Fluid
- ACCURATE DUAL-CHAMBER DESIGN: Features a dual-chamber system to enhance test accuracy by filtering alkaline particles that might cause false combustion leak readings, ensuring reliable results for both gasoline and diesel engines
- VERSATILE COMPATIBILITY: Our leak detector is compatible with both gasoline and diesel engines, offering broad utility and providing an accurate method to test for head gasket, cylinder head, and engine block leaks
- FAST AND ECONOMICAL: Provides a rapid, cost-effective solution for detecting combustion gas leaks with minimal downtime or expense for your vehicle, ensuring swift diagnosis and repair for improved engine health
- COLOR-CHANGING TESTER FLUID: Includes a 16 oz. bottle of tester fluid; turns from blue to yellow for gasoline engines and blue to green for diesel, offering a clear visual indicator of the presence of a combustion leak
- COMPLETE TESTING KIT: Comes with a dual-chamber tester, 16 oz. tester fluid, and easy-to-follow operating instructions, providing everything needed for accurate and efficient combustion leak testing
Rank No. #6
Head Gasket Tester Kit – Over 100 Tests, Complete Combustion Leak Test System with Universal Radiator Adapter, Works on Cars, Trucks, SUVs and Leak Detection Fluid 8oz
- Test Over 100 Times - This combustion leak tester kit includes a durable adapter with nozzle and an 8oz bottle of premium coolant tester fluid, providing more than 100 reliable tests. Perfect for identifying blown head gaskets, cracked cylinder heads, or engine damage, making it an essential tool for both professionals and DIY enthusiasts.
- Effortless and Precise Leak Detection - Our coolant leak detection kit simplifies the process of spotting combustion leaks. Just add 2ml of head gasket test fluid, connect the cylinder leak down tester kit, and start your engine. The coolant tester fluid changes from blue to yellow within seconds once leak is detected, giving you quick and reliable results. Perfect for efficient detection of combustion gases and early signs of engine trouble.
- All-in-One for Reliable Testing -This all-in-one head gasket leak tester kit includes a universal adapter (27–52 mm) that fits most radiators in cars, trucks, motorcycles, and heavy-duty equipment. Designed for accurate and consistent results, this coolant tester is the ideal solution for detecting combustion leaks across a wide range of vehicles.
- Engine-Safe Formulation - The blown head gasket test kit is carefully engineered to protect sensitive vehicle components during use. When paired with your coolant tester combustion leak system, it helps safeguard radiator ports and prevents potential damage. This head gasket kit delivers accurate results while keeping your engine safe.
- Professional-Grade from a Trusted Brand - Backed by a reputation for vehicle-safe solutions, this head gasket test kit delivers consistent, reliable results. Whether used as a combustion leak detector or exhaust leak detector, it’s designed for precision, ease of use, and long-term dependability, trusted by both professionals and DIYers.
Rank No. #7
Block Tester BT-600 Replacement Combustion Leak Test Fluid 16 oz
- 16 ounces / 474 ml (good for 16 tests in Block Tester brand combustion leak tester)
- Use in Block Tester brand combustion leak tester or other fluid-based leak testers
- Works with GAS or DIESEL engines as well as propane, CNG, and other alternative fuels
- When fluid turns from BLUE to YELLOW combustion leak is present
Rank No. #8
OEMTOOLS 37145 Combustion Leak Detector, Plastic and Rubber Tester for Engine Block Leaks, Automotive Blown Head Gasket Test, Block Test Kit
- Leak Detector: Locate internal combustion leaks quickly and easily; Leak down tester for blown head gasket, cracked head, block pulled bolts, stud blocks, warped sealing surfaces
- Detector Test Function: The tool provides easy-to-read results; When fluid turns from blue to yellow, combustion leak is present
- Heavy Duty Engine Automotive Test System: Gasket leak test kit designed for mechanic; Combustion leak tester comes in sturdy, plastic carrying case
- Quick Results: Tests in seconds for blown head gasket, cracked head, block pulled bolts, stud blocks, warped sealing surfaces
- Combustion Leak Test: Tester identifies leaking and blocks in engine to support head gasket and block repair
Rank No. #9
Lisle 75630 Test Fluid
- Detects Combustion Leaks on Engines.
- Use the leak detector fluid with the Lisle 75500 Combustion Leak Detector.
- Indicating fluid changes from blue to yellow when exposed to combustion gases in the radiator.
- Contains 16 fluid oz.
Rank No. #10
Enhon Head Gasket Tester Combustion Leak Test Kit with 8.5oz Testing Fluid and Universal Radiator Adapter, Dual-Chamber Tester Kit for Head Gasket, Gas/Diesel Engine, Car Truck Combustion Leak Check
- Dual chamber Design: Our cylinder head gasket combustion leak tester adopts a unique dual chamber structure, filtering water vapor and alkaline particles through the lower chamber, allowing only pure gas to enter the detection area of the upper chamber, effectively preventing the test fluid from being contaminated, improving detection accuracy and the number of repeated uses
- Wide Compatibility: The universal handheld conical adapter equipped with our head gasket leak tester kit has a wide measurement range (17-45 mm), which is suitable for handheld detection of coolant reservoir or radiator ports of most gasoline and diesel engines; It also supports inserting the lower chamber of the tester into the brass adapter (not included in the package) for a more stable connection
- Easy to Use: First pour the test fluid into the upper chamber of the head gasket tester to the dotted line mark, then screw the adapter into the radiator port (wear thick gloves to hold the press tester to ensure that there is no leakage), start the engine at idle speed, press the top rubber bulb several times, and observe the color change of the test fluid
- Color changing Test Fluid: During the test, if the CO2 test fluid does not change color, the cylinder head gasket is not leaking; If the fluid changes color to yellow or green, it means that the cooling system detects combustion gas and further inspection is required for cylinder head gasket leakage or cylinder head damage
- Head Gasket Leak Kit: You will receive 1 dual chamber tester, 1 universal cone adapter and 1 bottle of 8.5 oz/ 250 ml blue black test fluid, which is widely applied in cars, trucks, road tractors, excavators, motorcycles and forklifts, etc., providing accurate and efficient combustion leak testing
Last update on 2025-08-14 / Affiliate links / Images from Amazon Product Advertising API
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This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:
- Brand Value: Every brand of Block Tester has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
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- Specifications: How powerful they are can be measured.
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