This is a used OEM Mercury Marine Harmonic Balancer, part number 863397. It’s designed for use with select Mercury and MerCruiser marine engines and is essential for reducing engine vibration and protecting internal components.
The part is in good working condition and has been inspected for structural integrity and performance.
⚠️ Condition Note:
There is a visible cosmetic dent on the outer edge of the balancer. The dent is reflected in the pricing (see photos for reference).
Details:
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Genuine Mercury Marine OEM part
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Part Number: 863397
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Functionally tested
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Cosmetic dent present – no impact on performance
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Ideal for replacement or repair projects
Compatibility:
Fits various Mercury and MerCruiser engine models. Please confirm compatibility with your engine before purchasing.
