7880 14mm Thread Top Dead Center Indicator Switch, Shift Indicator Replacement Part, 6" Long

Product: A thread top dead center shift indicator that accurately shows piston movement. Automotive replacement part.. Material: Made of durable metal to ensure quality, the whole body is made of iron, with steel spring, the cap and tail part are made of brass.. Dimension: L: 6.25"" W: 0.57"" H: 0.57"" , 1/8'' marks, 14mm thread. The spark plug angle is limited to within 20 degrees.. Function: You can use it to quickly find the exact TDC. Allows a technician to accurately set any position to Top Dead Center.. Installation: Remove the spark plug, screw in the gauge and rotate the engine while observing the graduation marks on the sliding shaft. Note the top of the piston stroke.Tool must engage piston perpendicular to flat top. May cause TDC axis to bend and serious damage occurs if used on any other application.