Professional Compression Tester

Designed for fast and accurate compression testing of gasoline powered engines. Fits both 14mm and 18mm spark plug threads. Meets or exceeds ANSI

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Universal Compatibility - There are 4 sizes of brass adapters and 2pcs universal push-on connectors in the engine pressure tester kit. The 10mm 12mm 14mm 18mm adapters can be connected to the corresponding size cylinder head. The straight push-on connector and the curved one use rubber cone tip, can be pushed against on the cylinder head, universal for almost all the size cylinder head.