# 32102-87J20 Suzuki Flywheel | Genuine Used Part

🔧 Product Description

  

Genuine Suzuki / Johnson 85-Tooth Flywheel Magneto - Part Number: 32102-87J20

  

A genuine used Suzuki flywheel-magneto assembly for first-generation DF40 and DF50 four-stroke outboards and equivalent Johnson four-stroke engines.

  

The flywheel is a three-cylinder, 85-tooth assembly and directly cross-references Johnson / Evinrude part number 5036074. It is also commonly identified by Mitsubishi magneto code F4T765.

  

⚙️ Key Features

  

• Genuine Suzuki flywheel-magneto assembly

• 85-tooth starter ring gear

• Suzuki reference 32102-87J20

• Johnson / Evinrude equivalent 5036074

• Suits 40HP and 50HP three-cylinder four-stroke outboards

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 32102-87J20 current Suzuki service flywheel for the applicable engine family

• 5036074 corresponding Johnson / Evinrude reference

  

OEM / Related Numbers:

  

• Suzuki: 32102-87J20

• Suzuki: 3210287J20

• Suzuki: 32102-87J20-000

• Johnson / Evinrude: 5036074

• Mitsubishi: F4T765

• Flywheel key and bolt from the 87J magneto assembly

• Stator and charging coil from the matching DF40 / DF50 ignition system

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Suzuki DF40 and DF50 four-stroke outboards

• Johnson 40HP and 50HP Suzuki-built four-stroke outboards

• Three-cylinder magneto systems using F4T765

  

Typically suits:

  

• Engine models:

• Suzuki DF40

• Suzuki DF40T

• Suzuki DF40QH

• Suzuki DF50

• Suzuki DF50T

• Suzuki DF50TH

• Johnson 40HP four-stroke - approximately 2005-2006

• Johnson 50HP four-stroke - approximately 2005-2006

• Engines originally fitted with Suzuki 32102-87J20 or BRP 5036074

  

• HP Range: 40HP - 50HP

• Engine Type: Inline three-cylinder, four-stroke EFI outboard

• Year Range: Suzuki approximately 1999 - 2010; Johnson approximately 2005 - 2006

  

🔌 Function

  

The flywheel carries the starter ring gear and permanent magnets that pass the stator to generate charging and ignition-system power.

  

Common signs of failure:

  

• Starter ring teeth are damaged

• Magnets are loose or cracked

• Battery does not charge correctly

• Engine has an unstable timing signal

• Flywheel contacts the stator

• Crankshaft keyway is damaged

• Excessive flywheel runout

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 125.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Flywheels | Engine Flywheels & Ring Gears

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 125.00 AUD | In stock |

## Images

- 32102-87J20 Suzuki Flywheel | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/32102-87j20-suzuki-flywheel-genuine-used-part)
> Updated: 2026-07-12