63D-W0078-03 Yamaha Water Pump Repair Kit | Genuine OEM Yamaha Outboard Part
63D-W0078-03 Yamaha Water Pump Repair Kit | Genuine OEM Yamaha Outboard Part
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🔧 Product Description
Genuine Yamaha Water Pump Repair Kit - Part Number: 63D-W0078-03-00
A genuine Yamaha OEM water pump repair kit used for Yamaha 40HP, 50HP and 60HP lower-unit cooling-system service. This kit includes the main water pump service components required to restore pump pressure and cooling-water flow.
⚙️ Key Features
- Genuine Yamaha OEM water pump repair kit
- Correct Yamaha part number 63D-W0078-03-00
- Complete water pump service kit
- Includes cartridge insert, gasket, outer plate, impeller, O-ring, damper, bolts and woodruff key
- Used on Yamaha 40HP to 60HP water pump assemblies where specified
🚤 Compatibility
Commonly used on
- Yamaha 40HP to 60HP lower-unit water pump assemblies
- Yamaha 63D-series water pump service applications
Typically suits
- Engine models:
- Yamaha C40 two-stroke water pump service applications
- Yamaha P40 two-stroke water pump service applications
- Yamaha 40V / 40Y water pump service applications
- Yamaha F40A / F40C / F40D / F40H four-stroke water pump service applications
- Yamaha 50H water pump service applications
- Yamaha F50A / F50D / F50F / F50H four-stroke water pump service applications
- Yamaha FT50B / FT50C high-thrust water pump service applications
- Yamaha F60A / F60B / F60C / F60F four-stroke water pump service applications
- Yamaha T60 / FT60 high-thrust water pump service applications
- HP Range: commonly 40HP - 60HP where specified
- Engine Type: Yamaha outboard lower-unit water pump assembly
- Kit Type: Complete water pump / impeller repair kit
🔌 Function
The water pump repair kit restores cooling-water pump performance by replacing the impeller, insert, gasket and related sealing components that create water pressure and flow.
⚠️ Common Signs of Failure
- Weak tell-tale stream
- Engine overheating
- Temperature alarm
- Impeller blades cracked, missing or permanently bent
- Pump insert scored from sand or debris
- Pump damaged from dry running
- Water pump service due at maintenance interval
- Poor cooling pressure at idle or cruise
🔄 Supersession & Cross Reference
OEM Supersession Chain
- 63D-W0078-03-00 later Yamaha water pump repair kit reference
- 63D-W0078-01-00 related earlier Yamaha water pump repair kit reference
- 63D-W0078-00-00 related earlier Yamaha water pump repair kit reference
OEM / Related Numbers
- 63D-W0078-03-00
- 63D-W0078-03
- 63DW00780300
- 63DW007803
- 63D-W0078-01-00
- 63D-W0078-01
- 63D-W0078-00-00
- 63D-W0078-00
Included / Related Kit Components
- 63D-44312-00-00 Housing Cover
- 63D-44316-00-00 Water Pump Gasket
- 63D-44322-00-00 Cartridge Insert
- 63D-44323-00-00 Outer Plate Cartridge
- 663-44366-01-00 Water Seal Damper
- 6H3-44352-00-00 Impeller
- 90119-08185-00 Bolts with Washer
- 90280-03024-00 Woodruff Key
- 93210-59MG7-00 O-Ring
Aftermarket / Verified Equivalents
- Sierra: 18-3434 water pump repair kit without housing
- Sierra: 18-3415 water pump kit with housing
- Recmar: REC63D-W0078-01
- SeaSierra: 63DW0078 kit family
- Aftermarket reference: HJ YHJB-63D
- Aftermarket reference: 63D-W0078-03 / 63D-W0078-01 / 63D-W0078-00
- Aftermarket water pump kit with housing for Yamaha 40HP / 50HP / 60HP outboards
📦 Condition
- Genuine Yamaha part
- Brand new
- Supplied in original or equivalent packaging
Shipping & Delivery
Shipping & Delivery
Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.
Returns & Warranty
Returns & Warranty
14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.
Not sure this fits?
Not sure this fits?
Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.
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