# 3C8650292 Tohatsu Marine Gasket | Genuine OEM Outboard Part

🔧 Product Description

  

Genuine Tohatsu / Nissan Water Pump Guide Plate Gasket - Part Number: 3C8-65029-2

  

A genuine Tohatsu/Nissan guide-plate gasket fitted beneath the stainless water-pump wear/guide plate on 40 HP and 50 HP pump assemblies. Compact reference 3C8650292 corresponds to OEM part 3C8-65029-2 and is superseded by the later -3 revision.

  

⚙️ Key Features

  

• Genuine Tohatsu/Nissan guide-plate gasket

• Seals beneath water-pump guide plate 3C8-65025-0

• Correct intake and bolt-hole profile

• Single-use gasket for pump overhaul

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 3C8-65029-3 / 3C8650293M → supersedes 3C8-65029-2

• 3C8-65029-2 / 3C8650292 → supplied part reference

• 3C8-65029-1 and 3C8-65029-0 → earlier gasket revisions

  

OEM / Related Numbers:

  

• 3C8650292

• 3C8-65029-2

• 3C8650293M

• 3C8-65029-3

• 3C8-65029-1

• 3C8-65029-0

• 3C8-65025-0 - related guide plate

  

Aftermarket / Verified Equivalents:

  

• Aftermarket 3C8-65029-2 / 3C8-65029-3 guide-plate gasket

• Mercury cross-reference family: 27-16158-4 on applicable Tohatsu-built engines

  

🚤 Compatibility

  

Commonly used on:

  

• Tohatsu M40D and M40D2

• Tohatsu M50D and M50D2

• Nissan NS40D2 and NS50D2

• Selected MD40/MD50 and Tohatsu-built Mercury/Mariner pump assemblies where the diagram specifies this gasket

  

Typically suits:

  

• HP Range: 40-50 HP

• Engine / System Type: Three-cylinder two-stroke/TLDI lower-unit water-pump assembly

• Year Range: Approximately 2002 onward, pump revision dependent

• Serial / Identification Range: Confirm the guide-plate and pump-housing revision. Current service supply may be 3C8-65029-3 even when the original diagram shows 3C8-65029-2.

  

🔌 Function

  

Seals the guide plate to the gearcase so pump suction and discharge are not lost beneath the wear plate.

  

Common signs replacement or service is required:

  

• Weak cooling-water flow after pump assembly

• Water bypasses beneath the guide plate

• Gasket is torn, compressed or corroded

• Pump has been dismantled and the original gasket cannot be reused

  

📦 Condition

  

• Genuine Tohatsu / Nissan OEM gasket, brand new.

• Brand new

• Supplied in manufacturer or equivalent protective packaging

## Details

- **Price:** 8.4 AUD
- **Vendor:** Tohatsu
- **Tags:** Tohatsu Outboard Parts | Marine Engine Components & Spares

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 8.40 AUD | In stock |

## Images

- 3C8650292 Tohatsu Marine Gasket | Genuine OEM Outboard Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3c8650292-gasket)
> Updated: 2026-08-01