# 21342186 Flywheel | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta flywheel for specified D2 compact marine-diesel engines. It supersedes flywheel 3583691 and provides the crankshaft inertia, starter ring-gear interface and drive-plate mounting required for the applicable gearbox or saildrive installation.

## 🚤 Compatibility

-   **HP Range:** Approximately 50-75 HP

## ⚙️ Key Features

-   Genuine Volvo Penta D2 flywheel
-   Supersedes earlier flywheel 3583691
-   Approximate mass: 25.58 kg
-   Provides starter ring-gear and drive-plate interface
-   Match gearbox/saildrive, flywheel housing and engine serial number
-   Engine type: Volvo Penta D2 four-cylinder compact marine diesel

## 🔌 Function

Stores rotational energy, carries the starter ring gear and transfers crankshaft torque to the drive plate or transmission coupling.

## ⚠️ Common Signs of Failure

-   Abnormal vibration or run-out
-   Damaged ring-gear teeth causing starter engagement problems
-   Cracks, heat checking or fretting at the mounting face
-   Loose or elongated bolt holes
-   Clutch, damper or drive-plate alignment problems

## 🛠️ Service Notes

-   Inspect the ring gear teeth for chipping, burring and one-sided wear before refitting — a damaged tooth ring will chew up a new starter pinion
-   Check the clutch or damper mating face for scoring, heat cracking and blueing, and check the crankshaft rear seal and any spigot bearing while access is good
-   Clean the crankshaft flange and the flywheel face so both are dry and free of oil, old sealant and burrs; a trace of oil on that joint is enough to let the flywheel work loose
-   Locate the flywheel the correct way round on its dowel or locating feature, and renew the bolts wherever the manual calls them single-use
-   Tighten the bolts progressively in a criss-cross pattern to the figure and stages given in the workshop manual for your engine, and never lever against the ring gear teeth to hold it

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   21342186 → Supersedes 3583691

### OEM / Related Numbers

-   3583691 earlier number superseded by this part

## 📦 Condition

-   Genuine Volvo Penta part
-   Brand new
-   Supplied in original or equivalent packaging

## Details

- **Price:** 2305.86 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2305.86 AUD | In stock |

## Images

- 21342186 Flywheel | Genuine Volvo Penta Part
- 21342186 Flywheel | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21342186-flywheel-genuine-volvo-penta)
> Updated: 2026-09-06