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• Convenient tool checks Holley® Power Valves for ruptured diaphragms to prevent engine flooding
• Remove knurled cap and screw in Power Valve; cut-away section of tool allows visual inspection of valve's operation
• CNC Machined from 6061-T6 aluminum and anodized to prevent corrosion
• Requires the use of a hand-operated vacuum tester (available in most auto parts stores)
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