MERCURY PISTON RING KIT 39-16054A5
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MERCURY PISTON RING KIT 39-16054A5
This piston ring kit is a direct replacement for the following OEM and aftermarket part numbers:
| Brand / Manufacturer | Part Number / Reference |
| Mercury Marine / Mariner |
39-16054A5, 39-8M0080349, 8M0080349, 39-16054A4, 16054A5 |
| Tohatsu Outboards |
346-00011-0, 356-00011-0, 356-00011-1, 3C8-00011-3 |
| Nissan Marine | 346-00011-0, 356-00011-0 |
| Recmar (Aftermarket) | REC39-16054A5 |
Engine Compatibility & Fitment Guide
This kit fits a wide range of Mercury, Mariner, Tohatsu, and Nissan 2-stroke outboard marine engines. Always check your engine's serial number or manual to verify exact fitment before installation.
Mercury / Mariner (2-Stroke Outboards)
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25 HP & 30 HP (2-Cylinder International Models)
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40 HP (International Models) — Serial: 0N056165 & Up
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40 HP Lightning / Lightning XR — Serial: 0N000001 thru 0N056164 / 0N056165 & Up
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40 HP MXL Marathon & SeaPro — Serial: 0N037781 thru 0N056164
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50 HP / 50MH — Serial: 0N051023 thru 0N056164 / 0N056165 & Up
Tohatsu & Nissan (2-Stroke / TLDI Outboards)
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M25C3 (25 HP, 2-Cylinder)
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M30A4 (30 HP, 2-Cylinder)
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M40D / M40D2 (40 HP)
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M50D / M50D2 (50 HP)
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TLDI Series: M40D / M50D Direct Injection Models (68mm Bore)