Alltrade 648832 Nissan Timing Chain Holding Tool for 1980 to 1986 Models Made to be the most reliable tools in the market today Tool solutions for most all situations Built to exceed tool standards For 1980-1986 Nissan 2.0L, 2.2L & 2.4L 4-cylinder models Used to hold timing chain in place while cylinder head or camshaft is removed Keeps timing chain from dropping inside the timing cover Wedge shape keeps chain tensioner from popping out Eliminates the need for timing cover R&I when servicing head