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