OEM Service Parts for MerCruiser Bravo 1
Year Range: 1988 to Present
Model: MerCruiser Bravo 1
Serial Range: 0B664190 thru 0W250000+
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Transom Assembly
Outdrive
Recommended Service Guide
Transom Assembly
Bellows:
Inspect annually for cracks, stiffness, or leaks
Replace proactively every 3–5 years depending on use and environment
Gimbal Bearing:
Inspect annually for noise or vibration (especially when turning)
Replace proactively every 3–5 years or immediately if noisy/rough
Anodes:
Inspect annually for heavy pitting
Replace once 50% consumed. Frequency based on storage and environment
Lower Shift Cable:
Inspect annually for stiffness or sheathing wear
Replace proactively every 3–5 years with other drive removal service
Outdrive
Gear Oil:
Drain & fill annually or every 100 hours
Replace vent and drain seals with every service
Water Impeller:
Monitor if engine operates in normal temperature
Replace proactively every 2-3 years depending on use and environment
Propeller Shaft:
Inspect and grease propeller shaft annually or every 50 hours
Universal Joint / Shaft Spline:
Inspect and grease annually or every 300 hours
Disclaimer: This is not a full service list, only suggested intervals for common components. Always follow official MerCruiser manuals for complete maintenance