21673291 Lower Gear | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta IPS Lower Gear - 1.82:1 - Part Number: 21673291

A genuine lower-gear assembly used in Volvo Penta IPS pod drives with 1.82:1 reduction. The gear set, bearings, shafts and shim requirements are ratio- and serial-number specific and must be matched to the upper gear.

⚙️ Key Features

• Genuine Volvo Penta IPS lower gear

• Ratio-specific gear geometry

• Factory-machined bearing and shaft interfaces

• Designed for submerged high-torque pod-drive service

• Genuine remanufactured alternative available

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21673291 (OEM lower-gear reference)

• 3801715 - genuine Volvo Penta remanufactured lower gear

OEM / Related Numbers:

• 3801715 - genuine remanufactured lower gear

• 3801453 / 3801454 - related lower-gear / gear references

• 21666188 / 21666189 - upper gears

• 3801710 / 3801711 / 3801712 / 3801713 - related exchange drives

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: Confirm drive model, exact ratio and serial number. Professional gear-contact and bearing-shim setup is required.

🔌 Function

Transfers torque through the submerged lower bevel-gear stage at the specified reduction and drives the propeller shafts.

Common signs of failure:

• Gear whine or rumbling

• Metal particles in drive oil

• Pitted or chipped teeth

• Excess backlash

• Bearing, shaft or seal failure after incorrect shimming

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging