Certification: ISO9001 factory production; CE documents available upon request
Real Product Photos: Steel crankshaft labyrinth overview, labyrinth groove detail, crankshaft assembly reference picture
.This heavy‑duty steel crankshaft labyrinth serves as a dependable drop‑in replacement for Tohatsu 9.9HP‑18HP two‑stroke and four‑stroke marine outboard motors, matching OEM part number 350‑00051‑1.
Fabricated with precision CNC‑machined high‑strength alloy steel, this sealing component delivers outstanding wear‑resistance, stable structural rigidity and reliable salt‑water corrosion resistance for continuous crankcase marine‑environment operation.
It creates an efficient labyrinth‑style sealing structure around the crankshaft journal. It effectively lowers oil blow‑by, prevents crankcase lube‑oil leakage, and blocks external moisture and fine debris from getting inside the crankcase under tough boating operating conditions.
This labyrinth part is strictly produced according to original OEM specifications. It maintains precise fitting clearance and stable sealing performance during high‑speed crankshaft rotation. It resolves typical crankcase‑related faults such as oil seepage, excessive oil consumption and crankcase contamination caused by worn original labyrinth components.
All critical dimensions comply with OEM standards. You can complete quick, straightforward drop‑in installation, and no trimming or extra adjustments are needed.
Thoroughly remove burrs and clean mating surfaces prior to fitting. Avoid scratching the precision labyrinth grooves during assembly.
Replace your worn, deformed or damaged factory crankshaft labyrinth with this steel spare part, and you will restore reliable crankcase sealing for your Tohatsu outboard.
Follow regular marine maintenance schedules. These good practices extend engine service life and sustain consistent engine performance out on the water.
Boat Motor Ladyrinth Washer Seal 350-00051-1 for Tohatsu Nissan Outboard 9.9HP 15HP 18HP 2/4 stroke Engine
For Tohatsu Nissan Models: M NS F 9.9, 15, 18 horsepower (2 & 4 stroke) engines.
Ladyrinth Washer Seal
Boat Motor for Outboard Engine
PISTON & CRANKSHAFT | 18 HP | 2002 | Evinrude | M18E2 |
PISTON & CRANKSHAFT | 9.9 HP | 2002 and earlier | Nissan Outboard | NS15D |
PISTON & CRANKSHAFT | 9.9 HP | 2002 and earlier | Nissan Outboard | NS9.9D |
PISTON & CRANKSHAFT | 9.9 HP | 2002 and earlier | Nissan Outboard | NS9.9D2 |
PISTON & CRANKSHAFT | 15 HP | 2002 and earlier | Nissan Outboard | NS15D2 |
PISTON & CRANKSHAFT | 15 HP | 2002 and earlier | Nissan Outboard | NS18E |
PISTON & CRANKSHAFT | 18 HP | 2002 and earlier | Nissan Outboard | NS18E2 |
PISTON & CRANKSHAFT | 9.9 HP | 2003 | Nissan Outboard | NS9.9D2 |
PISTON & CRANKSHAFT | 15 HP | 2003 | Nissan Outboard | NS15D2 |
PISTON & CRANKSHAFT | 18 HP | 2003 | Tohatsu Outboard | M18E2 |
PISTON & CRANKSHAFTX | 15 HP | 2003 | Tohatsu Outboard | M15D2 |
PISTON & CRANKSHAFT | 15 HP | 2002 | Evinrude | M15D2 |
PISTON, CRANK SHAFT | 9.9 HP | 2002 | Evinrude | M9.9D2 |
PISTON & CRANKSHAFT | 9.9 HP | 2002 | Evinrude | M9.9D |
PISTON & CRANKSHAFT | 9.9 HP | 2002 | Tohatsu Outboard | M9.9D |
PISTON, CRANK SHAFT | 9.9 HP | 2002 | Tohatsu Outboard | M9.9D2 |
PISTON & CRANKSHAFT | 15 HP | 2002 | Tohatsu Outboard | M15D2 |
PISTON & CRANKSHAFT | 18 HP | 2002 | Tohatsu Outboard | M18E2 |
PISTON & CRANKSHAFT | 9.9 HP | 2003 | Tohatsu Outboard | M9.9D2 |
PISTON & CRANKSHAFT | 18 HP | 2003 | Nissan Outboard | NS18E2 |



1 years
China