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