21666189 Upper Gear | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta IPS-A Upper Gear - 1.82:1 and 1.94:1 - Part Number: 21666189

A genuine matched upper-gear assembly used in Volvo Penta IPS-A pod drives with 1.82:1 and 1.94:1 reduction configurations. The gear tooth geometry, bearing seats and ratio are drive-specific; the component must be matched to the lower gear and complete drive serial number.

⚙️ Key Features

• Genuine Volvo Penta IPS upper gear

• Ratio-specific gear geometry

• Factory-machined bearing and shaft interfaces

• Designed for high-torque pod-drive service

• Genuine remanufactured alternative available

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21666189 (OEM upper-gear reference)

• 3801450 - genuine Volvo Penta remanufactured upper-gear reference

OEM / Related Numbers:

• 3801450 - genuine remanufactured upper gear

• 3801710 / 3801711 / 3801712 / 3801713 - related exchange-drive references

• 3861061 / 21260636 - valve housings

• 3887470 / 3887471 - valve kits

• 11418522 - control valve

• 21673284 / 21673291 / 21673294 - lower-gear references

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta IPS pod-drive transmission and gear assemblies

Typically suits:

• Drive models:

• IPS-A

• IPS-C where the exact ratio and serial-number catalogue identifies the part

• HP Range: Engine-rating dependent

• Engine Type: Volvo Penta IPS pod-drive transmission

• Year Range: Approximately 2006 - 2020

• Fitment Note: Drive serial number, reduction ratio and matched lower-gear configuration are mandatory. Professional bearing and shim setup is required.

🔌 Function

Transfers engine torque through the upper bevel-gear stage at the specified reduction and direction while maintaining correct tooth contact and bearing load.

Common signs of failure:

• Gear whine or rumbling

• Metal particles in drive oil

• Pitted, chipped or spalled teeth

• Excess backlash or abnormal contact pattern

• Bearing or seal failure after incorrect shimming

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging