The Genuine Tohatsu Crankshaft Oil Seal 3T5-00121-0 is an original equipment replacement seal designed for selected Tohatsu two-stroke TLDI outboard motors. Measuring 36 mm inside diameter, 46 mm outside diameter and 6 mm thick, it fits the upper main bearing area of the crankshaft assembly. This genuine OEM seal helps maintain crankcase sealing and is suitable for engine rebuilding, crankshaft servicing and replacement of deteriorated seals.
Oil Seals & O-Rings (Tohatsu)
Crankshaft Oil Seal 36 × 46 × 6 mm – 3T5-00121-0
Brand: Tohatsu
SKU: 3T5-00121-0
$80.60
Key benefits
Key Benefits
- - Genuine Tohatsu OEM crankshaft oil seal.
- - Factory-specified dimensions of 36 × 46 × 6 mm.
- - Designed for the upper main bearing assembly.
- - Helps maintain correct crankcase sealing.
- - Suitable for selected 40HP–90HP TLDI outboards.
- - Ideal for crankshaft and engine rebuilding.
- - Direct replacement for the specified original seal.
Compatible Tohatsu Outboard Motors
- 2-Stroke TLDI Outboards
- - MD40A – 40HP
- - MD50A – 50HP
- - MD40B – 40HP
- - MD50B – 50HP
- - MD40B2 – 40HP
- - MD50B2 – 50HP
- - MD70B – 70HP
- - MD75C2 – 75HP
- - MD90B – 90HP
- - MD90C2 – 90HP
Cross-Reference & Superseded Part Numbers
- Genuine Tohatsu References
- - 3T5-00121-0 – Original OEM part number.
- - 3T5001210M – Genuine Tohatsu ordering number.
Suitable Applications
- - TLDI crankshaft oil seal replacement.
- - Upper main bearing servicing.
- - Crankcase sealing repairs.
- - Two-stroke engine rebuilding.
- - Replacement of hardened or damaged crankshaft seals.
- - Preventative maintenance during major engine repairs.
Signs the Crankshaft Oil Seal Needs Replacing
- - Cracked, hardened or deteriorated sealing lip.
- - Visible seal damage during engine dismantling.
- - Air leakage detected during crankcase pressure testing.
- - Abnormal crankcase sealing performance.
- - Excessive wear around the crankshaft sealing surface.
- - Engine running problems traced to a crankcase air leak.
Shipping
Ships Australia-wide