Flywheel crafted for 4HP and 6HP models additionally replacement part 6BX 85550 00. Provides ideal fit and smooth restoration for marine motors. Constructed with sturdy metal for lasting use in challenging water conditions while maintaining consistent functionality. Easy installation with basic tools allows quick replacement or upgrade. User friendly design simplifies maintenance. Designed to meet factory specifications including 4HP, 6HP and 6BX 85550 00 models. Supports correct motor timing and improves overall function. Standard black flywheel weighing approximately 350g. Factory balanced replacement part ensures accurate rotation for dependable motor operations.