# 3857155 Lower Gear | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta lower gear for the 1.68:1 ratio, from the Marine Propulsion group, weighing 34.019 kg and listed for one DP application. It supersedes 3803412, which was catalogued earlier as a bracket, and 3855615, listed as a reman lower gear.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta DP-E

-   **Engine Family:** DP

## ⚙️ Key Features

-   1.68:1 ratio
-   34.019 kg
-   Supersedes 3803412 and 3855615
-   One DP application

## 🔌 Function

Carries the drive from the vertical shaft round to the propeller shafts at the 1.68:1 reduction, forming the lower half of the drive's gear train.

## ⚠️ Common Signs of Failure

-   Whine or howl from the lower unit under load
-   Metallic glitter in the drained gear oil
-   Clunk or backlash when drive is taken up
-   Chipped, pitted or spalled gear teeth
-   Bearing races scored or discoloured

## 🛠️ Service Notes

-   One of the numbers it replaces was listed as a bracket, so an old parts list may point you at the wrong sort of item under 3803412 — order by this number
-   The 1.78:1 gear is 3857099 and 3857152 covers 2.32:1 and 1.95:1
-   Renew shims, seals and bearings and set the tooth pattern before closing up

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   3857155 → Supersedes 3803412

### OEM / Related Numbers

-   3855615 earlier number superseded by this part
-   3803412 earlier number superseded by this part

## 📦 Condition

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

## Details

- **Price:** 11137.15 AUD
- **Vendor:** Volvo Penta
- **Type:** Transmission & Gearbox
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 11137.15 AUD | In stock |

## Images

- 3857155 Lower Gear | Genuine Volvo Penta Part
- 3857155 Lower Gear | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3857155-lower-gear-genuine-volvo-penta)
> Updated: 2026-10-10