The line pressure regulator valve cushion spring commonly breaks, resulting in low line pressure. Replacing the broken spring with Sonnax spring 95200-01 eliminates the need to replace the upper valve body. While the operating environment is severe for a spring of this size, Sonnax material minimizes the chance of breakage. Cushion spring made from rugged chrome-silicon alloy to provide high allowable working stresses. Note: Fits Type 1 or Type 2 valve bodies