• 6E5-12411-02 Yamaha Thermostat | Genuine OEM Yamaha Outboard Part
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6E5-12411-02 Yamaha Thermostat | Genuine OEM Yamaha Outboard Part

6E5-12411-02 Yamaha Thermostat | Genuine OEM Yamaha Outboard Part

$54.74 AUD
$54.74 AUD
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🔧 Product Description

Genuine Yamaha Outboard Thermostat - Part Number: 6E5-12411-02

A genuine Yamaha cooling-system thermostat for selected portable, commercial and mid-range two-stroke outboards.

The thermostat regulates cooling-water flow according to engine temperature, helping the engine warm correctly while preventing excessive operating temperature.

⚙️ Key Features

  • Genuine Yamaha OEM cooling-system thermostat
  • Correct Yamaha part number 6E5-12411-02
  • Supersedes earlier 6E5-12411-00 and 6E5-12411-01 references
  • Commonly catalogued with a 50°C to 60°C opening specification
  • Cross-references with Sierra, Recmar, GLM, Honda, Mercury and Parsun thermostats

🚤 Compatibility

Commonly used on

  • Yamaha portable and mid-range two-stroke cooling systems
  • Yamaha-based Japanese Mariner and corresponding Parsun applications

Typically suits

  • Engine models:
  • Yamaha 3A and Malta 3HP
  • Yamaha 4A and 4B
  • Yamaha 5C
  • Yamaha 6C and 6D
  • Yamaha 8C and 8F
  • Yamaha 20D
  • Yamaha E25A
  • Yamaha 25A, 25B, E25B, 25J, 25N and 25V
  • Yamaha 30D, 30G, 30H and E30H
  • Yamaha C30 from approximately 1993 onward
  • Yamaha C40 two-cylinder - approximately 1991-1997
  • Yamaha 40Q two-cylinder - approximately 1990-1998
  • Yamaha 40X and E40X
  • Yamaha C55 two-cylinder - approximately 1989-1995
  • Yamaha 55B two-cylinder - approximately 1992-2003
  • Yamaha 115A, 140A, 150A, 175A, 200A and 220A applications using the 6E5 thermostat family
  • HP Range: 3HP - 220HP, dependent on cooling-system design
  • Engine Type: Yamaha carburetted two-stroke outboard
  • Year Range: Approximately 1980s - 2010s, dependent on engine family

🔌 Function

The thermostat restricts cooling-water flow while the engine warms and opens as operating temperature rises.

⚠️ Common Signs of Failure

  • Engine overheats because the thermostat remains closed
  • Engine runs excessively cold because the thermostat remains open
  • Temperature fluctuates during operation
  • Salt or corrosion restricts thermostat movement
  • Poor idle quality or excessive fuel use during warm-up

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 6E5-12411-02 → Supersedes 6E5-12411-01
  • 6E5-12411-01 → Supersedes 6E5-12411-00
  • 6E5-12411-00 earlier Yamaha thermostat reference
  • 677-12411-00 earlier related Yamaha thermostat reference

OEM / Related Numbers

  • 6E5-12411-02
  • 6E5-12411-02-00
  • 6E5124110200
  • 6E5-12411-01
  • 6E5-12411-00
  • 677-12411-00
  • Honda Marine: 19300-881-761
  • Mercury / Mariner: 11919001
  • Mercury / Mariner: 11919M
  • Mercury / Mariner: 83282M

Aftermarket / Verified Equivalents

  • Sierra: 18-3623
  • Recmar: REC19300881761
  • GLM: 13320
  • Honda Marine: 19300-881-761
  • Mercury / Mariner: 11919001
  • Mercury / Mariner: 11919M
  • Mercury / Mariner: 83282M
  • Parsun: T15-04000010

📦 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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