268M0214932 Mercury MerCruiser Oil Seal | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Crankshaft Oil Seal - Part Number: 26-8M0214932

A genuine Quicksilver crankshaft oil seal for selected Mercury and Mariner 3-cylinder and 4-cylinder two-stroke outboards.

The seal fits around the crankshaft at the applicable cylinder-block bearing location. It maintains crankcase sealing, prevents lubricant and fuel residue escaping and blocks unmetered air from entering the two-stroke crankcase.

⚙️ Key Features

• Genuine Quicksilver OEM crankshaft oil seal

• Correct current Mercury part number 26-8M0214932

• Supersedes earlier Mercury seal 26-43993

• Used on selected 70HP to 125HP two-stroke outboards

• Cross-references with Sierra, GLM and Recmar seals

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 26-8M0214932 → Supersedes 26-43993

• 26-43993 earlier OEM crankshaft seal reference

• 43993 original OEM base reference

OEM / Related Numbers:

• 26-8M0214932

• 8M0214932

• 268M0214932

• 26-43993

• 43993

• 2861-8501

• 28618501

Aftermarket / Verified Equivalents:

• Sierra: 18-0523

• GLM: 85090

• Recmar: REC26-43993

• Pro Marine: 2861-8501

🚤 Compatibility

Commonly used on:

• Mercury and Mariner 3-cylinder and 4-cylinder two-stroke crankshaft assemblies

• Cylinder blocks using original crankshaft seal 26-43993

Typically suits:

• Engine models:

• Mercury / Mariner 70HP 3-cylinder

• Mercury / Mariner 75HP 3-cylinder

• Mercury / Mariner 80HP 3-cylinder

• Mercury / Mariner 90HP 3-cylinder

• Mercury / Mariner 100HP 4-cylinder

• Mercury / Mariner 115HP 4-cylinder

• Mercury / Mariner 125HP 4-cylinder

• Mercury 70HP - serial 0A996142 and above where 26-43993 is specified

• Mercury 75HP - serial 0A996142 and above where 26-43993 is specified

• Mercury 80HP - serial 0A996142 and above where 26-43993 is specified

• Mercury 90HP - serial 0A996142 and above where 26-43993 is specified

• Mercury 100HP / 115HP / 125HP 4-cylinder powerheads using the 43993-series crankshaft seal

• HP Range: 70HP - 125HP

• Engine Type: Mercury / Mariner 3-cylinder and 4-cylinder two-stroke outboard

• Year Range: Approximately mid-1980s through the 2000s, dependent on serial number

🔌 Function

The seal maintains the airtight crankcase required for two-stroke fuel-charge transfer while preventing oil, fuel residue and combustion deposits from escaping around the crankshaft.

Common signs of failure:

• Oil or fuel residue around the crankshaft seal area

• Poor idle or difficult starting

• Lean-running symptoms caused by an air leak

• Reduced crankcase pumping pressure

• Seal lip hardened, torn or displaced

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging