When it comes to fine-tuning your MerCruiser's trim system, even the smallest components make a difference. The Mercury MerCruiser Trim Cylinder Bushing (23-99291T) is one of those parts that quietly does its job but is absolutely essential for smooth, controlled trim adjustments. Worn bushings can lead to sloppy performance, increased wear on other components, and reduced precision when adjusting trim angles-things no boater wants to deal with.. Why This Bushing Matters:. Built for the Job - Made from high-quality rubber, this bushing is designed to reduce friction and extend the life of your trim cylinder.. Exact Fit - Designed specifically for MerCruiser R, MR, and Alpha One sterndrives (1984-1991), ensuring a seamless replacement.. Improved Performance - Keeps trim adjustments smooth and precise, helping maintain optimal fuel efficiency and handling.. Where It's Used:. This trim cylinder bushing is a direct replacement for models including:. R/MR/Alpha One (Sterndrive) 1983-1990 -