# 6N6-W0078-02 Yamaha Water Pump Kit | Genuine OEM Yamaha Outboard Part

🔧 Product Description

  

Genuine Yamaha Complete Water Pump Service Kit - Part Number: 6N6-W0078-02

  

A genuine Yamaha water-pump kit for selected 100HP to 140HP two-stroke and early F115 four-stroke outboards.

  

The kit contains the impeller, wear plate, cartridge insert, pump gasket, O-rings, dowels, bolts and drive key required for a comprehensive lower-unit pump service.

  

⚙️ Key Features

  

• Genuine Yamaha OEM water-pump kit

• Correct current Yamaha part number 6N6-W0078-02

• Complete impeller, plate, insert, seal and hardware package

• Uses Yamaha impeller 6E5-44352-01

• Sierra, HJ Marine and SEI replacements available

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 6N6-W0078-02 → Supersedes 6N6-W0078-01

• 6N6-W0078-01 earlier OEM water-pump kit reference

  

OEM / Related Numbers:

  

• 6N6-W0078-02

• 6N6-W0078-02-00

• 61A-44322-02 cartridge insert

• 93210-86M38 O-ring

• 93210-37M67 O-ring

• 6E5-44352-01 impeller

• 6E5-44323-00 wear plate

• 6E5-44315-A0 gasket

• 93606-12019 dowel

• 90119-08M14 bolt with washer

• 90280-04M05 woodruff key

  

Aftermarket / Verified Equivalents:

  

• Sierra: 18-3313-1

• Sierra: 18-3312 related pump kit

• HJ Marine: YHJB-6N6

• SEI Marine: 96-405-01K

• Aftermarket Yamaha 6N6 complete water-pump kit

  

🚤 Compatibility

  

Commonly used on:

  

• Yamaha V4 lower-unit water pumps

• Early Yamaha F115 four-stroke gearcases

  

Typically suits:

  

• Engine models:

• Yamaha 100A two-stroke - approximately 1997-2000

• Yamaha 115B two-stroke - approximately 1997-2011

• Yamaha 115C two-stroke - approximately 1997-2013

• Yamaha 130B two-stroke - approximately 1997-2014

• Yamaha 140B two-stroke - 2003 production

• Yamaha F115A four-stroke - approximately 2000-2001

• Corresponding L-series counter-rotation applications where the pump diagram specifies 6N6-W0078-02

  

• HP Range: 100HP - 140HP

• Engine Type: Yamaha V4 two-stroke and early inline-four F115 four-stroke

• Year Range: Approximately 1997-2014, dependent on engine model.

  

🔌 Function

  

The kit renews the water-pump components responsible for drawing seawater through the lower unit and circulating it through the powerhead.

  

Common signs the kit is required:

  

• Weak tell-tale stream

• Engine overheats under load

• Impeller vanes are damaged

• Wear plate or cartridge insert is scored

• O-rings or gasket leak around the pump housing

  

📦 Condition

  

• Genuine Yamaha part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 182.0 AUD
- **Vendor:** Yamaha Pitmans Marine
- **Tags:** Yamaha Marine Parts | Outboard Engine Parts & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 182.00 AUD | In stock |

## Images

- 6N6-W0078-02 Yamaha Water Pump Kit | Genuine OEM Yamaha Outboard Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/6n6-w0078-02-water-pump-kit)
> Updated: 2026-07-11