# 20779978 Clutch | Genuine Volvo Penta Part

## 🔧 Product Description

Application-specific air-conditioning compressor clutch used in the front cover, flywheel housing, accessory drive and auxiliary piping on the listed Volvo Penta engines. Electromagnetically engages and disengages the air-conditioning compressor from the belt drive.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD1180-83VE
-   Volvo Penta TAD1170-72VE
-   Volvo Penta TAD1150-52VE
-   Volvo Penta TAD1140-42VE

-   **Engine Family:** TAD
-   **HP Range:** Approximately 140-265 HP
-   **Year Range:** Approximately 2000 - 2012

## ⚙️ Key Features

-   Genuine Volvo Penta air-conditioning compressor clutch
-   Direct service replacement for part number 20779978
-   Electromagnetically engages and disengages the air-conditioning compressor from the belt drive
-   Engine type: Four- and six-cylinder turbocharged industrial diesel

## 🔌 Function

Electromagnetically engages and disengages the air-conditioning compressor from the belt drive.

## ⚠️ Common Signs of Failure

-   Compressor does not engage despite a valid electrical command
-   Bearing rumble, squeal or pulley wobble
-   Clutch slips, overheats or produces a burning smell
-   Excessive air gap or worn friction surfaces
-   Blown fuse, open coil or abnormal clutch-coil current

## 🛠️ Service Notes

-   Verify compressor condition and clutch-coil voltage before replacement.
-   Set the specified clutch air gap and align the belt drive.

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20587125 - compressor/clutch family references
-   84094705 - compressor/clutch family references
-   85000458 - compressor/clutch family references
-   23576707 - compressor/clutch family references
-   RC.630.173 - commercial-vehicle clutch cross-reference
-   24V / 8PK / approximately 176-180mm pulley - documented replacement specification
-   20459924 - flywheel references
-   21090009 - flywheel references
-   21134648 - flywheel references
-   21033328 - starter ring gear
-   20460089 - bearing flange
-   20450835 - flywheel screws
-   20405654 - flywheel screws
-   20460206 - oil pan
-   20742661 - gaskets
-   20405888 - gaskets
-   20405915 - gaskets
-   20405792 - flange screws
-   984734 - flange screws
-   994386 - flange screws
-   20459906 - banjo nipple
-   20775904 - fitting
-   20793522 - A/C compressor V-belt
-   20788933 - flywheel-cover spacer

### Other-Brand OEM Numbers

-   VOE20779978 - Volvo CE prefixed number format
-   Sanden SD7H15 709 - compressor family reference

### Aftermarket / Verified Equivalents

-   INTL Auto Air Conditioning: INTL-CL847-24V

## 📦 Condition

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

## Details

- **Price:** 996.94 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 996.94 AUD | In stock |

## Images

- 20779978 Clutch | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20779978-clutch-genuine-volvo-penta)
> Updated: 2026-08-22