Sandborn air compressor gasket and valve plate repair kit Part Number 043-0142 for Sanborn and Coleman Compressors made by Powermate Fits multiple different model numbers of compressors The valve plate measures 8 1/4" long and 5" wide. The valve plate measures 8 1/4" long and 5" wide. This listing is for a Sanborn air compressor gasket and valve plate repair kit part number 043-0142 for Sanborn and Coleman Compressors made by powermate . This kit fits multiple different model numbers of compressors.