Keeping an outboard engine running at its best means using the right hardware for the job, and the Suzuki Gear Case Bolt (09116-10150) is built to secure critical components with precision. This OEM bolt, measuring 10mm in diameter and 55mm in length, is engineered to provide a strong, vibration-resistant hold in the lower unit assembly, ensuring the structural integrity of your Suzuki outboard.. Designed for durability in harsh marine environments, this bolt resists corrosion, wear, and the constant stresses of high-performance operation. Over time, gear case bolts can weaken due to repeated exposure to saltwater and torque loads, making replacement essential for preventing leaks, misalignment, or mechanical failures. Whether tackling routine maintenance or a full lower unit rebuild, installing a genuine Suzuki replacement ensures long-term reliability.. Why It Matters:. Secures Gear Case Components - Prevents unwanted movement, leaks, and structural wear.. OEM Fit & Strength - Design