# 21517489 Gear Ring | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Flywheel Ring Gear - Part Number: 21517489

  

A genuine starter ring gear fitted to the flywheel on later-production Volvo Penta D3 marine diesel engines. The hardened gear teeth provide the engagement surface for the starter-motor pinion and are matched to flywheel 21517500 on engines from the applicable serial break.

  

⚙️ Key Features

  

• Genuine Volvo Penta hardened flywheel ring gear

• Used with flywheel 21517500 on applicable later-production engines

• Introduced from engine serial number 2003018762

• Provides the starter-motor engagement teeth

• Direct replacement for a ring gear with chipped, worn or heat-damaged teeth

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21517489 (later-production OEM ring gear)

• 3818641 - earlier ring gear used up to engine serial number 2003018761

  

OEM / Related Numbers:

  

• 21517500 - matching later-production flywheel

• 3818641 - earlier ring gear

• 9454743 - flywheel mounting screw

• 21429352 - adapter ring

• 21416069 - flexible coupling

• 21485410 - flexible coupling

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D3 marine diesel flywheel and starter systems

  

Typically suits:

  

• Engine models:

• D3-110I-A/B/C/D/E/F/G/H

• D3-130A-A/B/C and D3-130I-A/B/C

• D3-140A-D/E/F/G/H and D3-140I-D/E/F/G/H

• D3-150I-D/E/F/G/H

• D3-160A-A/B/C and D3-160I-A/B/C

• D3-170A-D/E/F/G/H and D3-170I-D/E/F/G/H

• D3-190A-A/B/C and D3-190I-A/B/C where the serial break applies

• D3-200A-D/E/F/G/H and D3-200I-D/E/F/G/H

• D3-220A-D/E/F/G/H and D3-220I-D/E/F/G/H

  

• HP Range: 110HP - 220HP

• Engine Type: 2.4L inline five-cylinder common-rail marine diesel

• Year Range: Approximately 2004 - 2020

• Fitment Note: Use 21517489 only where the flywheel arrangement and serial number call for it; earlier engines use ring gear 3818641.

  

🔌 Function

  

Allows the starter-motor pinion to turn the flywheel and crankshaft during engine starting.

  

Common signs of failure:

  

• Starter motor spins without turning the engine

• Grinding or clashing noise during starting

• Chipped, rounded or missing gear teeth

• Repeated starter-pinion damage

• Intermittent non-engagement when the engine stops at a damaged tooth section

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 587.53 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 587.53 AUD | In stock |

## Images

- 21517489 Gear Ring | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21517489-gear-ring-genuine-volvo-penta)
> Updated: 2026-08-03