• 63P-43861-20 Yamaha O-Ring | Genuine OEM Yamaha Outboard Part
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63P-43861-20 Yamaha O-Ring | Genuine OEM Yamaha Outboard Part

63P-43861-20 Yamaha O-Ring | Genuine OEM Yamaha Outboard Part

$4.49 AUD
$4.49 AUD
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🔧 Product Description

Genuine Yamaha Trim Cylinder End Screw O-Ring - Part Number: 63P-43861-20-00

A genuine Yamaha OEM O-ring used in Yamaha power trim and tilt assemblies. This O-ring seals the trim cylinder end screw / trim piston cap area and helps prevent hydraulic fluid leakage from the power trim system.

⚙️ Key Features

  • Genuine Yamaha OEM O-ring
  • Correct Yamaha part number 63P-43861-20-00
  • Trim cylinder end screw / trim piston cap O-ring
  • Used in Yamaha power trim and tilt assemblies
  • Helps maintain hydraulic sealing pressure inside the trim system

🚤 Compatibility

Commonly used on

  • Yamaha power trim and tilt assemblies
  • Yamaha trim cylinder end screw / trim piston cap sealing locations
  • Yamaha 63P and related Showa-style trim systems

Typically suits

  • Engine models:
  • Yamaha 150HP power trim and tilt applications where 63P-43861-20 is specified
  • Yamaha 175HP power trim and tilt applications where specified
  • Yamaha 200HP power trim and tilt applications where specified
  • Yamaha 225HP power trim and tilt applications where specified
  • Yamaha 250HP power trim and tilt applications where specified
  • Yamaha 300HP power trim and tilt applications where specified
  • Yamaha 350HP power trim and tilt applications where specified
  • Yamaha F175 / F200 / F225 / F250 / F300 / F350 trim cylinder assemblies using the 63P trim O-ring family
  • Selected Yamaha 60HP / 70HP / 90HP / B90 / C55 / C60 / C75 / C80 / C85 trim applications where the diagram lists this O-ring
  • HP Range: commonly 150HP - 350HP, with selected smaller trim assemblies where specified
  • Engine Type: Yamaha outboard power trim and tilt system
  • Year Range: model-specific, including many 2010s-2020s Yamaha trim assemblies
  • Component Type: Hydraulic trim O-ring

🔌 Function

The O-ring seals the trim cylinder end screw area to help retain hydraulic pressure and prevent trim fluid leakage.

⚠️ Common Signs of Failure

  • Trim fluid leaking around cylinder cap
  • Trim system slowly drops under load
  • Air entering trim hydraulic system
  • Low trim fluid level
  • O-ring flattened, cut or hardened during service
  • Trim cylinder cap removed for seal replacement
  • Corrosion or seal damage around trim piston cap

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 63P-43861-20-00 Yamaha trim cylinder end screw O-ring reference
  • 63P-43861-20 short Yamaha O-ring format
  • 6H1-43861-00-00 related Yamaha trim O-ring reference listed in aftermarket trim parts data

OEM / Related Numbers

  • 63P-43861-20-00
  • 63P-43861-20
  • 63P438612000
  • 63P4386120
  • 6H1-43861-00-00
  • 6H1-43861-00
  • 6H1438610000
  • 6H14386100
  • 6H1-43872-00 related backup ring
  • 61A-4389H-01 related trim O-ring
  • 63P-43811-20 related cylinder end screw

Aftermarket / Verified Equivalents

  • Included in aftermarket Yamaha trim / tilt seal kit families for 63P power trim assemblies
  • Five Star Marine: FSM026 seal kit family for Yamaha 115HP-250HP / 115HP-225HP Showa-style trim units
  • Aftermarket trim / tilt seal kit reference: 63P-43800-00-4D / 64E-43822 kit family
  • Aftermarket replacement O-ring should be matched by OEM number 63P-43861-20-00 or 6H1-43861-00-00 where specified
  • Trim cylinder cap seal-kit replacement family for Yamaha 150HP-350HP power trim assemblies

📦 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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