East Manufacturing is fighting the corrosive effects of electrolysis through the use of new isolator shim-like devices that separate the steel tailgate pin from the aluminum tailgate frame on the company's dump and transfer trailers. Then, the encased pin is bolted to the tailgate with bolts that are impregnated with a new anti-corrosive coating. This gives the bolts the corrosive resistance of stainless steel without sacrificing the strength of steel. Together, the bolts and shim combine to create a formidable shield against corrosion.