Allstar Performance Compression Tester gauge ALL96520

Diagnosing engine health starts with accurate compression readings. Whether you're troubleshooting a misfire, verifying a fresh rebuild, or establishing baseline performance data, a reliable compression tester is non-negotiable in any serious mechanic's toolkit. The Allstar Performance ALL96520 delivers straightforward, repeatable measurements without the complications of digital electronics.

This mechanical gauge cuts through guesswork with a clear 0-300 psi range suitable for most naturally aspirated and moderately boosted applications. The 2.5-inch analog face with contrasting black pointer and white background ensures quick, reliable readings under shop lighting or in dimly-lit engine bays. A bolt-on solution for compression diagnostics—pair it with the appropriate adapter for your engine's spark plug hole configuration.

• Mechanical, analog operation
• 0-300 psi range
• 2.5-inch diameter gauge
• White face, black pointer
• Requires threaded adapter
• Sold individually
• No batteries required