Feature: 1. Applicable Model: Replacement for Mercruiser Alpha One Gen II stern drives 1991-Newer. Please confirm whether your model is applicable before purchasing. 2. Part Number: The part number for reference is 19-815951, 18-2466-9. Please verify compatibility with your required part number to avoid incorrect purchases. 3. High Heat Tolerance: Constructed from premium high-temperature materials, the trim cylinder ram cap is engineered to withstand engine-generated heat, ensuring durability during prolonged use. 4. Optimal Sealing: Features precision-machined components that provide a secure and leak-resistant seal. Helps maintain consistent performance and minimizes the risk of oil leaks, contributing to extended equipment life. 5. Effortless Installation: Sold as a set of four, these trim cylinder ram caps offer easy installation and a precise fit. Designed for straightforward replacement, allowing quick upgrades with minimal effort to support efficient operation. Specification: Item Type: Trim Cylinder Ram Cap OE Number: 19-815951, 18-2466-9 Fitment: Replacement for Mercruiser Alpha One Gen II stern drives 1991-Newer Package List: 4 x Trim Cylinder Ram Cap Note: Please verify the part number and compatibility with your unit. Reference information is provided for guidance only.