Mercury Oil Drain Plug Assembly 8M0112869 65-500HP EFI V6 V8 V10

Mercury Oil Drain Plug Assembly 8M0112869

The Mercury 8M0112869 Oil Drain Plug Assembly is an OEM replacement oil plug assembly used on a wide range of Mercury 4-stroke outboards. This assembly seals the engine oil drain point and helps prevent oil leaks after oil service or normal engine operation.

Fitment Overview

This oil drain plug assembly replaces Mercury OEM part numbers 8M0045813 and 8M0064964. Following the supersession chain shows fitment across Mercury EFI 4-stroke engines, 150HP 4-stroke models, newer V6 and V8 platforms, V10 models, and select Mercury Racing Verado applications.

Compatibility

Fits These Serial Ranges

Known OEM supersession references include Mercury 65 Jet, 75 EFI, 80 EFI, 80 Jet, 90 EFI, 100 EFI, and 115 EFI 4-stroke models serial 2B095049 and up, plus Mercury 150HP 4-stroke models serial 1B905505 and up. Newer V6, V8, V10, and Racing applications should be confirmed by engine serial number or parts diagram before ordering.

Important: Always verify your engine serial number or original oil plug number before ordering.

Part Numbers and Cross References

Need Only the O-Ring?

If the plug assembly itself is not damaged and you are only trying to stop or prevent a small oil leak, replacing the O-ring may be the cheaper repair.
View Mercury 863006 Oil Drain Plug O-Ring

What This Part Is Used For

This oil drain plug assembly seals the oil drain opening on compatible Mercury 4-stroke outboards. It is commonly serviced during oil changes or replaced when the plug, seal surface, or O-ring is worn or damaged.

• Seals the engine oil drain point
• Helps prevent oil leaks after service
• OEM replacement for Mercury 4-stroke applications listed above
• Works with replacement O-ring 863006

A damaged oil drain plug assembly or worn O-ring can cause oil seepage, especially after repeated oil changes.

System Function and Connections

• System Type: Engine lubrication / oil drain system
• Component Type: Oil drain plug assembly
• Related Component: Oil drain plug O-ring 863006
• Location: Engine oil drain point

FAQ

What does 8M0112869 replace?
It replaces Mercury OEM part numbers 8M0045813 and 8M0064964.

What engines does this oil drain plug assembly fit?
It fits a wide range of Mercury 4-stroke outboards including 65 Jet, 75, 80, 90, 100, 115, 150, V6, V8, V10, and select Racing Verado applications.

Do I need the full plug assembly or just the O-ring?
If the plug is cracked, stripped, damaged, or worn, replace the full assembly. If the plug is in good condition and only the seal is leaking, the 863006 O-ring may be enough.

Is this an OEM Mercury part?
Yes, 8M0112869 is an OEM Mercury oil drain plug assembly.

Searchable Part Numbers

8M0112869, 8M0064964, 8M0045813, 863006, Mercury oil drain plug assembly, Mercury oil drain plug O-ring, Mercury 115 oil drain plug, Mercury 150 oil plug, Mercury V6 oil drain plug, Mercury V8 oil drain plug, Mercury V10 oil drain plug, Mercury Verado oil plug, Pro XS oil plug, SeaPro oil drain plug