Gearcase Leakage Tester Kit for Outboard and Sterndrive Lower Units w/ Pump Filler and Adaptors!
 
The Gearcase Leakage Tester Kit from Buckshot Racing #77 is a must-have diagnostic tool for detecting gearcase leaks in outboard and sterndrive lower units.
 
Designed with precision and ease of use in mind, this tester identifies potential issues with seals, O-rings, and gaskets by performing a reliable vacuum test. Its specialized design ensures consistent and accurate results, making it ideal for marine enthusiasts and professionals.
 
Vacuum Testing for Leakage Detection: Unlike pressure testing, which identifies outward leaks, vacuum testing detects inward leaks. This approach is crucial because lower unit seals may hold pressure but still allow water to enter, compromising the gearcase.
 
Precise Measurement Capabilities: The tester is equipped with a 0 to 30-inch vacuum gauge to monitor exact pressure levels during the test.
 
Durable and Safe Connections: The kit includes a soft aluminum fitting that minimizes the risk of thread damage to gearcases.
 
Compatibility Across Engine Brands
 
The standard Gearcase Leakage Tester kit fits Mercury Mariner, Mercury Racing, Force, and Mariner outboards with the indursty 3/8-16" threads.
 
For broader compatibility, our included adapter kit includes fittings for OMC, Johnson, Evinrude, Yamaha, Tohatsu, and Suzuki lower units and gearcases. Our adaptor kit also includes the filler pump for gearcase fluids and gear oil changes.
 
Advantages of Vacuum Testing Over Pressure Testing
 
Vacuum testing offers a distinct benefit by checking for inward leakage that may not manifest under pressure testing. While pressure testing can confirm outward seal integrity, it often overlooks leaks that allow water to seep into the gearcase during operation.
 
By performing a vacuum test, users can detect these critical leaks early, preventing water intrusion, corrosion, and gear damage.
 
Why Use the Gearcase Leakage Tester?
 
Detecting and addressing leaks promptly ensures optimal gearcase performance, prevents water intrusion, and reduces the risk of costly repairs. The Gearcase Leakage Tester provides a straightforward and effective way to safeguard the reliability and longevity of your marine engine.
 
Full Instructions available in our Tech Hub. Also, feel free to reach out to mike@buckshotracing77.com or +1-714-697-1716 with any questions.