{"product_id":"motion-pro-digital-leak-down-tester-model-57-8740-engine-cylinder-diagnostic-tool","title":"Motion Pro Digital Leak Down Tester | Model 57-8740 | Engine Cylinder Diagnostic Tool","description":"\u003cp\u003eThe \u003cstrong\u003eMotion Pro Digital Leak Down Tester (Model 57-8740)\u003c\/strong\u003e is a professional-grade engine diagnostic tool built to accurately measure cylinder leakage — helping mechanics and enthusiasts quickly identify worn rings, blown head gaskets, and faulty intake or exhaust valves.\u003c\/p\u003e\u003cp\u003eFeaturing a \u003cstrong\u003eprecision digital display\u003c\/strong\u003e, built-in pressure regulator, and a rugged rubber-protected gauge housing, this tester delivers reliable results in demanding shop environments. It meets \u003cstrong\u003eFAA leak down test specifications\u003c\/strong\u003e, making it suitable for both automotive and aviation engine diagnostics.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCompatible with cylinders under 5.00\" bore diameter\u003c\/strong\u003e and spark plug threads of 10 mm, 12 mm, and 14 mm. Requires a 90 PSI air source.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDisplays total leakage percentage past rings, head gasket, intake \u0026amp; exhaust valves\u003c\/li\u003e\n\u003cli\u003ePrecision digital display for accurate, easy-to-read results\u003c\/li\u003e\n\u003cli\u003eBuilt-in pressure regulator for consistent 80 PSI cylinder test pressure\u003c\/li\u003e\n\u003cli\u003eRugged rubber boot protects digital gauges from shop damage\u003c\/li\u003e\n\u003cli\u003e1\/4\" male industrial quick connector for fast setup\u003c\/li\u003e\n\u003cli\u003eHose and adapter fit 10 mm, 12 mm, and 14 mm spark plug threads\u003c\/li\u003e\n\u003cli\u003eMeets FAA leak down test specs for cylinders below 5.00\" bore diameter\u003c\/li\u003e\n\u003cli\u003eIncludes molded storage tray and detailed instructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Motion Pro\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e 57-8740\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 08-0740\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Pressure:\u003c\/strong\u003e 80 PSI (requires 90 PSI air source)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Bore Diameter:\u003c\/strong\u003e 5.00 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark Plug Thread Compatibility:\u003c\/strong\u003e 10 mm, 12 mm, 14 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e 1\/4\" male industrial quick connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e FAA leak down test compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MOTION PRO","offers":[{"title":"Default Title","offer_id":47722616586481,"sku":"08-0740","price":194.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/1348\/7857\/files\/30af-6262d3f135c46.png?v=1769120924","url":"https:\/\/howlingmoto.com\/products\/motion-pro-digital-leak-down-tester-model-57-8740-engine-cylinder-diagnostic-tool","provider":"Howling Moto","version":"1.0","type":"link"}