# 93210-10M74 Yamaha O-Ring | Genuine OEM Yamaha Outboard Part

🔧 Product Description

  

Genuine Yamaha Power Trim Manual Release Valve O-Ring - Part Number: 93210-10M74

  

A genuine Yamaha hydraulic O-ring used within selected power trim and tilt manual-release valve assemblies.

  

The O-ring seals the manual-release adaptor, valve seat or bypass passage so the hydraulic system can retain pressure when the release screw is closed.

  

⚙️ Key Features

  

• Genuine Yamaha OEM hydraulic O-ring

• Correct Yamaha part number 93210-10M74

• Used around the manual-release valve and adaptor

• Fuel- and hydraulic-fluid-resistant rubber construction

• Compatible with numerous Yamaha trim and tilt systems

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 93210-10M74 current Yamaha OEM service reference

  

OEM / Related Numbers:

  

• 93210-10M74

• 93210-10M74-00

• 9321010M7400

• 6H1-43845-01 related manual-release screw

• 6H1-43847-00 related manual-valve seat

• 6H1-43854-00 related manual-release spring

• 64E-4388J-00 related hydraulic plug

  

Aftermarket / Verified Equivalents:

  

• Direct replacement hydraulic O-ring: 93210-10M74

• Included in selected aftermarket power trim valve-body seal kits

  

🚤 Compatibility

  

Commonly used on:

  

• Yamaha manual-release and hydraulic bypass-valve assemblies

  

Typically suits:

  

• Engine models:

• Yamaha 40HP, 50HP, 60HP and 70HP power-trim systems

• Yamaha 75HP, 80HP, 85HP and 90HP

• Yamaha 115HP and 130HP

• Yamaha 150HP, 175HP and 200HP two-stroke

• Yamaha Z150, Z175 and Z200 HPDI

• Yamaha F115 and F150 four-stroke

• Yamaha F200, F225 and F250 four-stroke

• Yamaha 70TLR and 90ETL trim assemblies

• Yamaha 150TXRC and related 64E-series hydraulic units

  

• HP Range: Commonly 40HP - 250HP

• Engine Type: Yamaha two-stroke, HPDI and four-stroke outboard power trim

• Year Range: Approximately 1990 - 2024, dependent on valve-body design

  

🔌 Function

  

The O-ring seals the manual hydraulic bypass valve so trim pressure is retained during normal powered operation.

  

Common signs of failure:

  

• Engine slowly lowers after being trimmed

• Hydraulic oil leaks near the manual-release screw

• Trim unit bypasses even when the screw is closed

• O-ring becomes flattened, cut or swollen

• Manual-release valve will not reseal after operation

  

📦 Condition

  

• Genuine Yamaha part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 4.55 AUD
- **Vendor:** Yamaha
- **Tags:** Yamaha Marine Parts | Outboard Engine Parts & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4.55 AUD | In stock |

## Images

- 93210-10M74 Yamaha O-Ring | Genuine OEM Yamaha Outboard Part
- 93210-10M74 Yamaha O-Ring | Genuine OEM Yamaha Outboard Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/93210-10m74-o-ring)
> Updated: 2026-07-11