# 20405649 Flywheel | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta SAE 3 flywheel with a listed rotational inertia of 1.2 kgm². It carries starter ring gear 21033328 and is retained to the crankshaft with ten screws 20405654.

## 🚤 Compatibility

-   **Engine Family:** D, TD, TAD, MD

Full model list at the end of this description.

## ⚙️ Key Features

-   SAE 3 flywheel configuration
-   Listed rotational inertia 1.2 kgm²
-   Uses starter ring gear 21033328
-   Retained with ten hexagon screws 20405654
-   Requires run-out, ring-gear and mounting-face inspection before installation
-   Engine type: Volvo Penta four- and six-cylinder industrial diesel

## 🔌 Function

Stores rotational energy, smooths crankshaft speed variation and transfers engine torque to the driven equipment.

## ⚠️ Common Signs of Failure

-   Cracked flywheel or damaged mounting face
-   Starter ring-gear tooth damage
-   Excessive flywheel run-out
-   Loose or fretted crankshaft mounting

## 🛠️ 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 / Related Numbers

-   21033328 - starter ring gear
-   20405654 - flywheel screws
-   20405643 - expansion plugs

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D5A-B TA, D5A-T, D5A-TA
-   Volvo Penta D7A-B TA, D7A-T, D7A-TA
-   Volvo Penta MD2010, MD2010B
-   Volvo Penta TAD530GE MECH, TAD530GE EDC4
-   Volvo Penta TAD531GE MECH, TAD531GE EDC4
-   Volvo Penta TAD730GE MECH, TAD730GE EDC4
-   Volvo Penta TAD731GE MECH, TAD731GE EDC4
-   Volvo Penta TAD520GE
-   Volvo Penta TAD532GE EDC4
-   Volvo Penta TAD720GE
-   Volvo Penta TAD721GE
-   Volvo Penta TAD722GE
-   Volvo Penta TAD732GE EDC4
-   Volvo Penta TAD733GE EDC4
-   Volvo Penta TD520GE
-   Volvo Penta TD720GE

## Details

- **Price:** 5692.31 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 5692.31 AUD | In stock |

## Images

- 20405649 Flywheel | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20405649-flywheel-genuine-volvo-penta)
> Updated: 2026-10-12