• 663-44324-A0 Yamaha Gasket | Genuine OEM Yamaha Outboard Part
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663-44324-A0 Yamaha Gasket | Genuine OEM Yamaha Outboard Part

663-44324-A0 Yamaha Gasket | Genuine OEM Yamaha Outboard Part

$7.89 AUD
$7.89 AUD
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🔧 Product Description

Genuine Yamaha Water Pump Cartridge Gasket - Part Number: 663-44324-A0

A genuine Yamaha gasket used beneath the water-pump cartridge or wear-plate assembly on selected 30HP, 40HP and 50HP two-stroke outboards.

The gasket seals the cartridge assembly against the gearcase and helps maintain water-pump suction and discharge pressure.

⚙️ Key Features

  • Genuine Yamaha OEM water-pump cartridge gasket
  • Correct Yamaha part number 663-44324-A0
  • Replaces the earlier 663-44324-00 reference
  • Used in selected 30HP to 50HP two-stroke lower units
  • Cross-references with Sierra, Recmar and Mercury / Mariner numbers

🚤 Compatibility

Commonly used on

  • Yamaha 30HP, 40HP and 50HP two-stroke water-pump assemblies
  • Yamaha gearcases using the 663-series cartridge and wear-plate design

Typically suits

  • Engine models:
  • Yamaha 30A and related 30HP two-stroke gearcases
  • Yamaha 40HP two-stroke - approximately 1984-1994
  • Yamaha 40E, 40H, 40J, 40N and 40Q
  • Yamaha 50HP two-stroke - approximately 1984-1987
  • Yamaha 50HP Pro Series - approximately 1987-1990
  • Yamaha P50 - approximately 1995-1996
  • Yamaha 50D, 50G and 50H gearcases using the 663-series water pump
  • HP Range: 30HP - 50HP
  • Engine Type: Yamaha carburetted two-stroke outboard
  • Year Range: Approximately 1984 - 1996, dependent on gearcase design

🔌 Function

The gasket seals the water-pump cartridge to the lower-unit housing. This prevents water from bypassing the pump chamber and allows the impeller to maintain adequate cooling-water flow.

⚠️ Common Signs of Failure

  • Reduced tell-tale or cooling-water output
  • Engine overheats after pump installation
  • Gasket is torn, compressed or incorrectly aligned
  • Water-pressure loss occurs around the cartridge base
  • Pump housing will not seat flat against the gearcase

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 663-44324-A0 → Supersedes 663-44324-00
  • 663-44324-00 earlier Yamaha water-pump gasket reference

OEM / Related Numbers

  • 663-44324-A0
  • 663-44324-A0-00
  • 66344324A000
  • 663-44324-00
  • 663-44315-A0 related lower plate gasket
  • 663-44316-A0 related upper plate gasket
  • Mercury / Mariner: 27-81421M

Aftermarket / Verified Equivalents

  • Sierra: 18-0294
  • Recmar: REC663-44324-00
  • Mercury / Mariner: 27-81421M
  • Included in Sierra lower-unit seal kit 18-2789

📦 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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