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688-45384-00 Yamaha Nut, Prop Shaft | Genuine OEM Yamaha Outboard Part

688-45384-00 Yamaha Nut, Prop Shaft | Genuine OEM Yamaha Outboard Part

$55.85 AUD
$55.85 AUD
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🔧 Product Description

Genuine Yamaha Gearcase Bearing Carrier Spanner Nut - Part Number: 688-45384-00

A genuine Yamaha threaded retaining nut used to secure the propeller-shaft bearing carrier within selected mid-range lower-unit housings.

Although commonly described as a propeller-shaft nut, this component is the large spanner-style bearing-carrier retaining nut installed inside the gearcase.

⚙️ Key Features

  • Genuine Yamaha OEM bearing-carrier retaining nut
  • Correct Yamaha part number 688-45384-00
  • Secures the propeller-shaft bearing carrier in the gear housing
  • Used on Yamaha 3-cylinder and 4-cylinder gearcases
  • Pro Marine, PROMT and direct aftermarket replacements available

🚤 Compatibility

Commonly used on

  • Yamaha 3-cylinder and 4-cylinder lower-unit bearing carriers

Typically suits

  • Engine models:
  • Yamaha 50HP gearcases using the 688 carrier nut
  • Yamaha 60HP
  • Yamaha 70HP
  • Yamaha 75HP
  • Yamaha 80HP
  • Yamaha 85HP
  • Yamaha 90HP
  • Yamaha 115HP
  • Yamaha 130HP
  • Yamaha L130 / S130 lower-unit applications
  • HP Range: 50HP - 130HP
  • Engine Type: Yamaha two-stroke and selected four-stroke outboard gearcase
  • Year Range: Approximately 1984 onward, dependent on bearing-carrier diameter

🔌 Function

The nut threads into the gearcase and retains the propeller-shaft bearing carrier, seals and reverse-gear assembly in their correct position.

⚠️ Common Signs of Failure

  • Nut is corroded or seized in the gearcase
  • Spanner slots are broken or damaged
  • Bearing carrier moves within the housing
  • Threads are stripped or heavily corroded
  • Nut must be removed during propeller-shaft or carrier servicing

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 688-45384-02 → Supersedes 688-45384-01
  • 688-45384-01 → Supersedes 688-45384-00
  • 688-45384-00 earlier Yamaha bearing-carrier nut reference

OEM / Related Numbers

  • 688-45384-00
  • 688-45384-00-00
  • 688453840000
  • 688-45384-01
  • 688-45384-01-00
  • 688-45384-02
  • 688-45384-02-00
  • 688-45383-02 related tab washer
  • 688-45332-series related bearing carrier

Aftermarket / Verified Equivalents

  • Pro Marine: 688N
  • PROMT Parts: PP-688-45384-00
  • SouthMarine: 688-45384 replacement spanner nut
  • Yamasco / YAMADURA: 688-45384 replacement nut

📦 Condition

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