# 21931952 Flexible Coupling | Genuine Volvo Penta Part

## 🔧 Product Description

Load-transmitting or actuation assembly engineered for the specified Volvo Penta propulsion or cooling-drive system. Correct spline, ratio, mounting and serial application are essential.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D11C2-A MP
-   Volvo Penta D11C4-A MP
-   Volvo Penta D11B4-A MP
-   Volvo Penta D11B2-A MP
-   Volvo Penta D11A-C MP
-   Volvo Penta D11A-D MP
-   Volvo Penta D11A-E MP
-   Volvo Penta D8A4-A MP
-   Volvo Penta IPS2-A
-   Volvo Penta IPS2-B
-   Volvo Penta IPS20-E

-   **Engine Family:** D, IPS

## ⚙️ Key Features

-   Factory torque and alignment specification
-   Designed for the original shaft or actuator geometry
-   Marine-duty materials
-   Related bearings, seals and fasteners must be inspected

## 🔌 Function

Absorbs torsional vibration and minor alignment movement while transmitting engine torque to the IPS driveline.

## ⚠️ Common Signs of Failure

-   Torsional vibration
-   Cracked or separated flexible element
-   Abnormal driveline noise
-   Fretting at bolts or flange
-   Loss of torque transmission

## 🛠️ Service Notes

-   Check and set the alignment of the engine and drive before and after fitting a flexible coupling — it absorbs vibration and a small amount of misalignment, it does not correct a driveline that is out of line
-   Handle the rubber elements carefully and keep them clear of oil, fuel and solvents, which soften and swell rubber and shorten its life dramatically
-   Fit the coupling as a complete unit, use new locking hardware wherever the workshop manual for your engine specifies it, and tighten the fasteners to the figures in that manual
-   Turn the driveline over by hand after assembly and check that it runs true, with no binding and no excessive free play
-   Inspect the coupling whenever the drive is separated for any other reason; the rubber is the part that ages, and planned replacement is far cheaper than a failure at sea

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   21931952 → Supersedes 3593770

### OEM / Related Numbers

-   3593770 earlier number superseded by this part

### Other-Brand OEM Numbers

-   VOE21931952

### Aftermarket / Verified Equivalents

-   Propeller shaft: 3889354
-   Extension kit: 3594632
-   Related flexible coupling: 3593770
-   Wiring harness: 21493370

## 📦 Condition

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

## Details

- **Price:** 10108.84 AUD
- **Vendor:** Volvo Penta
- **Type:** Clutch & Couplings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 10108.84 AUD | In stock |

## Images

- 21931952 Flexible Coupling | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21931952-flexible-coupling-genuine-volvo-penta)
> Updated: 2026-09-18