The Genuine Tohatsu Water Temperature Sensor O-Ring 3G9-66136-0 is an OEM replacement sealing ring measuring 2.0 × 10.0 mm. Designed for selected Tohatsu outboard water temperature sensor assemblies, this O-ring helps maintain a watertight seal between the sensor and engine housing. Ideal for replacing worn, flattened or damaged seals during sensor servicing, it helps prevent cooling water leakage and maintain reliable engine operation.
Oil Seals & O-Rings (Tohatsu)
Water Temperature Sensor O-Ring – 3G9-66136-0
Brand: Tohatsu
SKU: 3G9-66136-0
$2.30
Key benefits
Key Benefits
- - Genuine Tohatsu OEM replacement O-ring.
- - Designed for compatible water temperature sensors.
- - Helps prevent cooling water leakage.
- - Suitable for sensor replacement and maintenance.
- - Replaces worn, damaged or compressed O-rings.
- - Compact, precision-sized sealing component.
- - Supplied individually.
Compatible Outboard Motors
- Tohatsu TLDI Two-Stroke
- - MD30B2 – 30HP
- - MD40B2 – 40HP
- - MD50B2 – 50HP
- - MD70B – 70HP, selected serial ranges
- - MD90B – 90HP, selected serial ranges
- - MD90C2 – 90HP
- - MD115A2 – 115HP
- Tohatsu Four-Stroke
- - MFS25B – 25HP
- - MFS30B – 30HP
Cross-Reference & Related Part Numbers
- Genuine Tohatsu References
- - 3G9-66136-0 – Water temperature sensor O-ring
- - 3G9661360M – Ordering reference
- - 3G9661360 – Unhyphenated reference
Suitable Applications
- - Water temperature sensor servicing.
- - Replacement of leaking sensor seals.
- - Outboard cooling system maintenance.
- - Sensor removal and refitting.
- - Replacement of hardened or damaged O-rings.
Signs the O-Ring Needs Replacing
- - Cooling water leakage around the sensor.
- - Flattened or hardened rubber.
- - Cracking or visible deterioration.
- - Cuts or damage during sensor removal.
- - Loss of sealing performance.
Shipping
Ships Australia-wide