# 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

## Details

- **Price:** 34646.29 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 34646.29 AUD | In stock |

## Images

- 21673291 Lower Gear | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21673291-lower-gear-genuine-volvo-penta)
> Updated: 2026-08-03