21454749 Pulley | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta 28V Alternator Pulley - Part Number: 21454749

A genuine alternator pulley used with 28-volt, 80-amp and 110-amp charging systems on Volvo Penta TAD9 industrial engines.

⚙️ Key Features

• Designed for 28V alternator installations

• Supports 80A and 110A alternator configurations

• Precision-machined belt grooves

• Maintains correct alternator speed

• Balanced for continuous engine operation

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• Current OEM reference: 21454749

OEM / Related Numbers:

• 21454749

• 3803639 - 28V 80A alternator

• 3803640 - 28V 110A alternator

• 1066823 - Belt without air-conditioning compressor

• 20451458 - Belt with air-conditioning compressor

• 3587883 - Alternator bracket

• 973924 - Mounting screw

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

• TAD940GE

• TAD941GE

• TAD940VE

• TAD941VE

• TAD942VE

• TAD943VE

• TAD950VE

• TAD951VE

• TAD952VE

🔌 Function

The pulley transfers belt drive to the alternator at the speed required to maintain electrical output.

Common signs of failure or damage:

• Worn or damaged belt grooves

• Pulley wobble

• Belt misalignment

• Repeated belt wear

• Loose pulley on the alternator shaft

• Charging reduction caused by belt slip

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging