21736273 Hub | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Timing Idler-Gear Hub - Part Number: 21736273

A genuine Volvo Penta timing idler-gear hub used in Volvo Penta TAD8 timing-gear and auxiliary-drive systems. It is manufactured to the factory dimensions and operating specification for the catalogued installation.

⚙️ Key Features

• Precision-machined torque-transfer surfaces

• Factory gear, spline or flange geometry

• Designed for continuous propulsion or industrial load

• Requires correct bearing, fastener and shim setup

• Matched to the specific drive or engine configuration

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21736273 (current OEM reference)

OEM / Related Numbers:

• 21860003 - idler gear

• 975199 - flange screws

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta TAD8 timing-gear and auxiliary-drive systems

Typically suits:

• Engine / drive models:

• TAD840VE

• TAD841VE

• TAD842VE

• TAD843VE

• TAD850VE

• TAD851VE

• TAD852VE

• TAD853VE

• TAD870VE

• TAD871VE

• TAD872VE

• TAD873VE

• TAD880GE

• TAD880VE

• HP Range: Approximately 250HP - 400HP, depending on rating

• Engine Type: 7.7L inline six-cylinder turbocharged industrial diesel

• Year Range: Approximately 2010 - 2021

• Fitment Note: Confirm the complete engine, drive or equipment product number and serial number before ordering.

🔌 Function

A precision drivetrain component that transfers rotational torque while maintaining the specified alignment, ratio and bearing relationship.

Common signs of failure:

• Abnormal whine, rumble or knocking

• Excessive backlash or shaft movement

• Pitting, scoring or fretting

• Metal debris in lubricant

• Vibration or premature bearing and seal wear

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging