Need replacement springs for your Volvo Penta stern drive? This Sierra 18-6523 spring set is engineered to meet OEM specifications and withstand the harsh marine environment. Sierra supplies parts to many boat manufacturers, so you know the quality is there. These springs are crucial for proper operation of your stern drive's tilt/trim mechanism or other components (check your specific Volvo Penta model to confirm compatibility). They're built to handle today's higher horsepower engines and resist corrosion from saltwater exposure. The set includes multiple springs - exact quantity depends on your application. If your current springs are worn, corroded, or broken, replacing them with these genuine Sierra parts will help restore proper function to your stern drive system. Always a good idea to replace springs in sets rather than individually for balanced performance.