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