6CJ-W0078-00 Yamaha Water Pump Kit | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha F70 Water Pump Repair Kit - Part Number: 6CJ-W0078-00

A genuine Yamaha lower-unit water-pump repair kit for F70 four-stroke outboards.

The kit contains the impeller and principal gaskets, plates and service components needed to restore cooling-water flow during scheduled maintenance or pump repair.

⚙️ Key Features

• Genuine Yamaha OEM water-pump repair kit

• Correct Yamaha part number 6CJ-W0078-00

• Superseded by Yamaha kit 6CJ-W0078-01

• Designed for Yamaha F70 four-stroke lower units

• Cross-references with Sierra, HJ Marine, Recmar and Quicksilver kits

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 6CJ-W0078-01 → Supersedes 6CJ-W0078-00

• 6CJ-W0078-00 earlier Yamaha water-pump repair-kit reference

OEM / Related Numbers:

• 6CJ-W0078-01

• 6CJ-W0078-01-00

• 6CJ-W0078-00

• 6CJ-W0078-00-00

• 6CJW00780000

• 6CJ-44315-00 included water-pump gasket

• 6CJ-44324-00 included cartridge gasket

• 6H3-44352-00 included impeller

• 63D-44322-00 included cartridge insert

Aftermarket / Verified Equivalents:

• Sierra: 18-3494

• HJ Marine: HJ-YHJB-6CJ

• Recmar: REC6CJ-W0078-00

• Quicksilver: 8M6012800

• Full Power Plus: 6CJ-W0078-00 replacement kit

🚤 Compatibility

Commonly used on:

• Yamaha F70 four-stroke lower-unit water pumps

Typically suits:

• Engine models:

• Yamaha F70A

• Yamaha F70AET

• Yamaha F70AETL

• Yamaha F70LA

• Yamaha F70LA2

• Yamaha F70LA 0310 and 0410 production

• Yamaha F70LA 2011-2016 production

• Yamaha F70LA approximately 2010-2021 under the original kit reference

• Later F70 production using superseding kit 6CJ-W0078-01

• HP Range: 70HP

• Engine Type: Yamaha inline-four EFI four-stroke outboard

• Year Range: Approximately 2010 onward

🔌 Function

The kit renews the pump components responsible for drawing water through the lower unit and circulating it through the engine cooling system.

Common signs the kit is required:

• Weak or intermittent tell-tale stream

• Engine overheats at idle or under load

• Impeller blades are cracked, stiff or missing

• Wear plate or cartridge insert is scored

• Scheduled water-pump service interval has been reached

📦 Condition

• Genuine Yamaha part

• Brand new

• Supplied in original or equivalent packaging