If you are experiencing leaking brake fluid or a spongy pedal feel, then your caliper banjo bolt or crush washers may be failing. When the brake line is not sealing against the caliper properly, then air may enter the brake system which will cause a soft pedal feel and leaking fluid. Whether your bolt or washers are damaged, it's better to replace them at the same time especially if the bolt head is getting rounded off (crush washers should not be re-used either). This will fit the front calipers on your 1984-1993 Mustang (See "Fitment & Features" tab to ensure fitment).
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