• 66T-44311-00 Yamaha Water Pump Housing | Genuine OEM Yamaha Outboard Part
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66T-44311-00 Yamaha Water Pump Housing | Genuine OEM Yamaha Outboard Part

66T-44311-00 Yamaha Water Pump Housing | Genuine OEM Yamaha Outboard Part

$35.50 AUD
$35.50 AUD
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🔧 Product Description

Genuine Yamaha Lower-Unit Water Pump Housing - Part Number: 66T-44311-00

A genuine Yamaha water-pump housing for selected F25, T25, F30 and F40 four-stroke outboards.

The housing encloses the flexible impeller and directs water from the lower-unit inlet into the engine cooling tube. Its internal surface must remain smooth and correctly shaped for the impeller to generate reliable suction and pressure.

⚙️ Key Features

  • Genuine Yamaha OEM water-pump housing
  • Correct Yamaha part number 66T-44311-00
  • Designed for the 66T-series lower-unit water pump
  • Fits selected 25HP to 40HP four-stroke outboards
  • Cross-references with Recmar / Parsun housing and complete aftermarket pump kits

🚤 Compatibility

Commonly used on

  • Yamaha 25HP to 40HP four-stroke lower-unit water pumps
  • Tiller and remote-control models using the 66T-series gearcase

Typically suits

  • Engine models:
  • Yamaha F25 four-stroke 2-cylinder
  • Yamaha T25 four-stroke - approximately 2001-2005
  • Yamaha F30 four-stroke - approximately 2001-2005
  • Yamaha F40 four-stroke 3-cylinder - approximately 2000 onward
  • Yamaha F40A and F40B applications using the 66T-series pump
  • Yamaha 25HP, 30HP and 40HP four-stroke gearcases using repair kit 66T-W0078-01
  • HP Range: 25HP - 40HP
  • Engine Type: Yamaha four-stroke outboard
  • Year Range: Approximately 2000 - 2019, dependent on lower-unit design

🔌 Function

The housing surrounds the water-pump impeller and forms the chamber required to create suction and cooling-water pressure. It directs pumped water into the engine's cooling tube.

⚠️ Common Signs of Failure

  • Internal housing surface is scored or melted
  • Weak or absent tell-tale stream
  • Engine overheats despite installation of a new impeller
  • Housing is cracked, distorted or corroded
  • Water leaks around the pump outlet or base

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 66T-44311-00 current Yamaha OEM water-pump housing reference

OEM / Related Numbers

  • 66T-44311-00
  • 66T-44311-00-00
  • 66T443110000
  • 63D-44311-01 related replacement housing reference
  • 66T-W0078-01 related water-pump repair kit
  • 66T-44322-00 related pump insert
  • 66T-44352-00 related impeller

Aftermarket / Verified Equivalents

  • Recmar / Parsun: PAF15-04000201
  • Aftermarket housing: 63D-44311-01
  • Sierra complete water-pump kit with housing: 18-3413

📦 Condition

  • Genuine Yamaha part
  • Brand new
  • Supplied in original or equivalent packaging

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

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?

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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