23493801 Idler Gear | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta idler gear from the Engine group, weighing 11.34 kg and listed for four TAD series engine applications. It supersedes 21509055 and is the lightest of the four idler gears here.

🚤 Compatibility

Typically suits:

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

• Engine Family: TAD

⚙️ Key Features

• Idler gear from the Engine group
• 11.34 kg
• Supersedes 21509055
• Listed for four TAD series engine applications
• The lightest of the four idler gears in this group

🔌 Function

Transfers drive from one timing gear to the next, keeping the driven shafts turning in the right direction and correctly phased to the crankshaft.

⚠️ Common Signs of Failure

• Gear whine or rattle from the timing end of the engine
• Noise changing with load or as the engine warms
• Backlash felt when the train is turned by hand
• Teeth pitted, scuffed or chipped on strip-down
• Idler bush and its shaft found worn or scored

🛠️ Service Notes

• At 11.34 kg it is the one idler here that weight does separate, but still order by number and by the engine's fitment list
• Check the mating gears and the idler shaft for wear before closing the timing case

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 23493801 → Supersedes 21509055 → Supersedes 21060841 → Supersedes 20480566

OEM / Related Numbers

• 21509055 earlier number superseded by this part
• 21826612 earlier number superseded by this part
• 21060841 earlier number superseded by this part
• 20480566 earlier number superseded by this part

📦 Condition

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