Tohatsu Nissan Outboard Propeller Shaft Oil Seal 3B7-60111-0 60hp-140hp 30x50x12
3B7-60111-0
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Tohatsu Oil Seal 3B7-60111-0
Genuine Propeller Shaft Gearcase Protection
This genuine Tohatsu/Nissan Propeller Shaft Oil Seal is engineered to maintain a critical barrier between your gearcase and the surrounding water. Designed specifically for the high-performance lower units of 60HP to 140HP outboards, it prevents salt or fresh water from contaminating your gear lubricant, which is the leading cause of premature gear and bearing failure.
Key Features
- β Genuine OEM Part (Tohatsu/Nissan)
- β Direct fit for 30mm propeller shafts
- β Marine-grade salt-resistant construction
- β Vital for lower unit maintenance
Technical Specs
| Inner Diameter (ID) | 30 mm |
| Outer Diameter (OD) | 50 mm |
| Thickness/Width | 12 mm |
| Location | Propeller Shaft Housing |
| Material | Nitrile Rubber / SS Spring |
Compatibility / Fitment Guide
| Engine Type | Horsepower / Models | Notes |
|---|---|---|
| Tohatsu 2-Stroke | M60, M70, M80, M90, M115, M120, M140 | Models B, C, & A Series |
| Tohatsu TLDI | MD70, MD75, MD90, MD115 | All TLDI A & B Variants |
| Nissan Outboard | NS60, NS70, NS90, NS115, NS120, NS140 | Equivalent Models |
OEM Cross Reference
| Tohatsu | 3B7-60111-0, 3B7601110, 3B7-60111-0M |
| Nissan | 3B7-60111-0 |
Questions & Answers
Is this a genuine original part?
Yes, this is an authentic Tohatsu OEM part. It provides the exact performance and tolerance levels required by the manufacturer for high-horsepower gearcases.
When should I replace this seal?
You should replace the propeller shaft seal whenever you notice milky gear oil (indicating water ingress) or if there is visible oil leaking from behind the propeller. It is also recommended during any lower unit overhaul.
Are the dimensions 30x50x12 standard for all Tohatsu outboards?
No, this specific size is intended for the larger 3B7 gearcase found on 60HP to 140HP models. Smaller engines (9.9HP-50HP) use different seals such as 346-60111-0 or 353-60111-0.
Note: Technical data provided by 4boats.co.uk. Please verify your original part number against the references above before purchasing to ensure fitment.
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