CDI Electronics 18-99530 Pressure and Vacuum Tester for Marine Gearcases

The CDI Electronics 18-99530 (551-34PV) is a professional-grade combination pressure and vacuum tester designed for marine applications. This versatile diagnostic tool performs both pressure and vacuum testing on outboard motor gearcases, outdrives, and lower units to detect leaks and verify seal integrity.

Key Features:

• Combination unit performs both pressure and vacuum testing functions
• Includes complete adapter kit: 551-34HA threaded nozzle with hose, 551-334M adapter, and 551-334S adapter
• Replaces Stevens S34 pressure tester and V34 vacuum tester models
• Essential diagnostic tool for detecting gearcase seal leaks before water intrusion damages internal components
• Compatible with most outboard motors, sterndrives, and marine lower units

This professional tester helps marine technicians and boat owners identify potential seal failures and maintain gearcase integrity, preventing costly repairs from water contamination. The included adapters provide compatibility with a wide range of marine drive applications.