Oil Seal for Tohatsu Nissan Outboard 40HP 50HP 3C8-00121-0 32x42x6mm Crankshaft
Oil Seal for Tohatsu Nissan Outboard 40HP 50HP 3C8-00121-0 32x42x6mm Crankshaft
Oil Seal for Tohatsu Nissan Outboard 40HP 50HP 3C8-00121-0 32x42x6mm Crankshaft
Oil Seal for Tohatsu Nissan Outboard 40HP 50HP 3C8-00121-0 32x42x6mm Crankshaft
Oil Seal for Tohatsu Nissan Outboard 40HP 50HP 3C8-00121-0 32x42x6mm Crankshaft

Oil Seal for Tohatsu Nissan Outboard 40HP 50HP 3C8-00121-0 32x42x6mm Crankshaft

3C8-00121-0

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  • 30 Day Return Policy
  • Low stock - 4 items left
  • Backordered, shipping soon
Our stock levels are dynamic and can change frequently. If a product appears to be in stock, it may have already sold out. Please contact us if you have any questions about availability. Thank you for your understanding.

Regular priceΒ£17.99
/
Tax included.

Oil Seal 3C8-00121-0

Premium Crankshaft Upper Seal for Tohatsu & Nissan

This premium aftermarket oil seal is designed specifically for the crankshaft upper assembly of Tohatsu and Nissan outboard engines. Precision engineered to 32 x 42 x 6 mm, it provides a critical barrier to prevent oil leakage and maintain engine compression, ensuring your marine engine operates at peak performance.

RELIABILITY: Manufactured using high-grade nitrile rubber (NBR) with a corrosion-resistant internal spring for maximum durability in saltwater environments.

Key Features

  • βœ” Direct OEM replacement fit
  • βœ” Marine-grade Nitrile Rubber (NBR)
  • βœ” Excellent heat and chemical resistance
  • βœ” Stainless steel garter spring

Technical Specs

Inner Diameter: 32 mm
Outer Diameter: 42 mm
Width/Thickness: 6 mm
Position: Crankshaft Upper
Material: NBR / Stainless Spring

Compatibility / Fitment Guide

Make/System Model/Application Notes
Tohatsu 2-Stroke 40HP (M40D / M40D2) Crankshaft Upper
Tohatsu 2-Stroke 50HP (M50D / M50D2) Crankshaft Upper
Nissan 2-Stroke 40HP (NS40D / NS40D2) Cross Reference Fitment
Nissan 2-Stroke 50HP (NS50D / NS50D2) Cross Reference Fitment

OEM Cross Reference

Tohatsu Part Number: 3C8-00121-0
Superseded Part Number: 3C8001210M
Nissan Part Number: 3C8-00121-0

Questions & Answers

Is this a genuine original part?

This is a premium quality aftermarket replacement part, manufactured to meet or exceed original equipment (OE) standards for fitment and performance.

How do I know if it is compatible?

We recommend checking the SKU/MPN and Cross Reference list provided above. If your original part number matches 3C8-00121-0 or 3C8001210M, it is a guaranteed fit.

Where exactly is this seal installed?

This seal is located at the Upper Crankshaft position on the engine block for the specified 2-stroke 40HP and 50HP models.

Note: Please verify your original part number against the references above before purchasing. Distributed by 4Boats.

For the products under Β£150 the shipping is Β£6.99.

Free delivery for most items over Β£150.

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