Even the smallest components play a big role in keeping an outboard engine running smoothly, and the Mercury Retaining Ring (53-67684) is no exception. Designed to secure key assemblies, this OEM part ensures that everything stays locked in place, preventing unnecessary movement that could lead to premature wear or performance issues. Whether it's part of the steering system, swivel bracket, or another critical assembly, this retaining ring is built for durability and reliability.. Made from high-quality, corrosion-resistant materials, it's designed to withstand the harsh conditions of marine environments. Its precise fit ensures compatibility with a wide range of Mercury and Mariner outboards, including 2.5L and 3.0L EFI models, Pro Max series, and various HP configurations from 45 to 300.. Why It's Important:. Secure Fit - Keeps engine components stable, preventing misalignment or premature wear.. Built to Last - Resistant to corrosion and designed for the demands of marine use.. OEM