BMW M57 Valve Spring Compressor ToolNEW Design. Our new design now comes with bigger openings to allow for changing the springs in the car much easier as others on the market have much smaller openings. Its also a lot thicker so there's no flex when compressing springs. In fact its so much stronger that only 2 studs are required to be used but has allowance for 4 like others This tool will come very handy while replacing valve steam seals or installing upgraded valve springs. It is
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