Moroso introduces GM LS Storage Plates, Part No. 25179 for GM LS1, LS2, LS6, C5R, Part No. 25180 is for GM LSX, LS3, & LS7 engines. A convenient way to keep a GM LS engine lifter valley area sealed off from foreign objects during storage. Plates are constructed out of 1/8” thick steel with a zinc coating for corrosion resistance and include mounting hardware.