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Powerhead Components (Tohatsu)

Thermostat Cap – 3H6B01031-0

Brand: Tohatsu

SKU: 3H6B01031-0

$26.75
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The Genuine Tohatsu Thermostat Cap 3H6B01031-0 is an OEM replacement component for the engine cooling system on selected Tohatsu two-stroke and four-stroke outboard motors. Designed to cover the thermostat housing and retain the thermostat assembly, this cap helps maintain correct cooling system sealing and operation. Ideal for replacing cracked, corroded or damaged thermostat caps during servicing, it provides a genuine replacement for reliable engine cooling performance.

Key benefits

Key Benefits

  • - Genuine Tohatsu OEM replacement thermostat cap.
  • - Designed for the original engine cooling system.
  • - Helps protect and retain the thermostat assembly.
  • - Suitable for selected two-stroke and four-stroke outboards.
  • - Supports correct thermostat housing sealing when fitted with the specified gasket.
  • - Replaces earlier thermostat cap references.
  • - Supplied individually — not a thermostat kit.

Compatible Outboard Motors

  • Tohatsu Conventional Two-Stroke
  • - M25C3 – 25HP
  • - M30A4 – 30HP
  • Tohatsu Four-Stroke – 6HP–9.8HP
  • - MFS6BZ – 6HP
  • - MFS8A2 – 8HP
  • - MFS8B – 8HP
  • - MFS9.8A2 – 9.8HP
  • - MFS9.8B – 9.8HP
  • - MFS9.8BX – 9.8HP
  • Tohatsu Four-Stroke – 25HP–30HP
  • - MFS25B – 25HP
  • - MFS30B – 30HP

Cross-Reference & Superseded Part Numbers

  • Genuine Tohatsu References
  • - 3H6B01031-0 – Genuine Thermostat Cap
  • - 3H6B010310M – Genuine ordering reference
  • - 3H6B010310 – Unhyphenated reference
  • Superseded Part Numbers
  • - 346-01031-0 – Earlier thermostat cap reference
  • - 346B01031-0 – Earlier thermostat cap reference
  • - 346B01031-1 – Earlier thermostat cap reference

Suitable Applications

  • - Thermostat cap replacement.
  • - Outboard engine cooling system repairs.
  • - Thermostat inspection and replacement.
  • - Repair of damaged thermostat housings.
  • - Replacement of corroded or cracked cooling system covers.
  • - Routine outboard motor servicing and maintenance.

Signs the Thermostat Cap Needs Replacing

  • - Cracked or damaged thermostat cap.
  • - Corrosion around the thermostat housing.
  • - Cooling water leakage from the cap joint.
  • - Damaged or distorted mounting surfaces.
  • - Broken mounting points.
  • - Excessive deterioration during thermostat servicing.
  • - Poor sealing after gasket replacement.

Shipping

Ships Australia-wide