MerCruiser Alpha One Gen II 100 Hour Service Kit

Mercury Marine MerCruiser Alpha One Gen II 100 Hour Service Kit

The Mercury 8M0147055 100 Hour Maintenance Kit provides everything needed to complete a scheduled 100-hour service on MerCruiser Alpha One Gen II sterndrives from 1991 and newer. Designed to simplify routine maintenance, this kit consolidates all required components into a single package, eliminating the need to source individual parts separately. Every item is manufactured by Mercury Marine to stringent OEM specifications, ensuring optimal fitment and performance for your Mercury or Mariner MerCruiser sterndrive system.

The kit is compatible with runabouts, family bowriders, fishing boats, and classic sport boats equipped with the Alpha One Gen II sterndrive. It is engineered for both freshwater and saltwater/coastal environments when the appropriate anode selection is used. Periodic maintenance using this kit helps keep the sterndrive running smoothly, shifting cleanly, and protected against galvanic corrosion and water intrusion.

The sterndrive install gasket kit ensures every mating surface seals properly, providing confidence during operation under load or while shifting. The aluminum anode kit defends the drive against galvanic corrosion whether the vessel is used frequently or seasonally. The included gearcase drain seals make gear lube service straightforward and leak-free, preserving smooth shifting and protecting internal drivetrain components. Complement this kit with genuine Mercury 4-Stroke Marine Engine Oil and Mercury Premium Gear Lube (part number 858058K01), sold separately, for a complete service.

Key Features

• Complete 100-hour maintenance kit for MerCruiser Alpha One Gen II sterndrives (1991 and newer)
• Includes full sterndrive install gasket kit for reliable sealing at all mating surfaces
• Aluminum anode kit provides strong corrosion protection in freshwater and saltwater environments
• Gearcase drain seals included for secure, clean gear lube changes
• OEM-engineered components for precision fit and long-term reliability
• All required service items in one convenient package
• Serviceable with common shop tools; follow owner's manual for recommended intervals
• Produced by Mercury Marine to original equipment manufacturer specifications