93101-23070 Yamaha Oil Seal 23x37x6 | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Lower-Unit Driveshaft Oil Seal 23mm x 37mm x 6mm - Part Number: 93101-23070

A genuine Yamaha S-type oil seal used around the vertical driveshaft in selected Yamaha and Japanese-built Mercury or Mariner lower units.

The seal is installed beneath the water-pump assembly and separates the gearcase lubricant from the water-pump cavity. Two seals may be installed back-to-back on compatible gearcases to provide protection against both oil leakage and water intrusion.

⚙️ Key Features

• Genuine Yamaha OEM S-type oil seal
• Correct Yamaha part number 93101-23070
• Dimensions: approximately 23mm inside diameter x 37mm outside diameter x 6mm width
• Used around the lower-unit driveshaft
• Mercury, Sierra and Recmar equivalents available

🚤 Compatibility

Commonly used on

• Yamaha lower-unit driveshaft and water-pump base assemblies
• Japanese-built Mercury and Mariner gearcases using 82234M

Typically suits

• Engine models:
• Yamaha F25 four-stroke gearcases using the 23mm driveshaft seal
• Yamaha F30 four-stroke
• Yamaha F40 four-stroke
• Yamaha F50 and T50 four-stroke
• Yamaha F60 and T60 four-stroke
• Yamaha 30HP two-stroke
• Yamaha 40HP and C40 two-stroke
• Yamaha 50HP and C50 two-stroke
• Yamaha 60HP and 70HP gearcases using the 23mm seal
• Mercury / Mariner lower units using 26-82234M
• HP Range: Commonly 25HP - 70HP
• Engine Type: Yamaha / Mercury / Mariner two-stroke and four-stroke outboard
• Year Range: Approximately 1990s - 2010s, dependent on gearcase

🔌 Function

The oil seal retains lower-unit lubricant around the driveshaft while preventing cooling water from entering the gearcase through the water-pump base.

⚠️ Common Signs of Failure

• Gear oil becomes cloudy or milky
• Lubricant leaks beneath the water-pump assembly
• Gearcase fails pressure or vacuum testing
• Driveshaft seal lip becomes hard, cut or worn
• Corrosion develops around the seal carrier

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 93101-23070 current Yamaha OEM service reference

OEM / Related Numbers

• 93101-23070
• 93101-23070-00
• 9310123070
• 931012307000
• Mercury / Mariner: 26-82234M
• Mercury / Mariner: 82234M

Aftermarket / Verified Equivalents

• Sierra: 18-0297
• Recmar: REC93101-23070
• Mercury / Mariner: 26-82234M
• Direct replacement seal: 23mm x 37mm x 6mm

📦 Condition

• Genuine Yamaha part
• Brand new
• Supplied in original or equivalent packaging