If you have a loss of power in your 1979-93 Mustang brake system, you might need to replace a faulty master cylinder, brake booster, or proportioning valve. Your master cylinder is what holds your brake fluid and sometimes becomes cracked or leaks. Latemodel Restoration has the replacement master cylinder for your 2.3 or 5.0 motor. Need a new brake booster? Our direct replacements can put the power back into your brake system. Keep your fluid flowing properly with a Ford Racing Adjustable Brake Proportioning Valve. Top it all off with a chrome master cylinder cover to give your motor some shine!