# 3852402 Drive Gear Set | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta drive gear set for the 1.51:1 and 1.79:1 ratios, weighing 2.06 kg and listed for 14 applications on the SX drive series. It supersedes part number 3850937, catalogued earlier as a gear set.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta SX-RT2
-   Volvo Penta SX-S
-   Volvo Penta SX-ST
-   Volvo Penta SX-C
-   Volvo Penta SX-C1
-   Volvo Penta SX-C2
-   Volvo Penta SX-CT
-   Volvo Penta SX-CT1
-   Volvo Penta SX-CT2
-   Volvo Penta SX-M
-   Volvo Penta SX-M1
-   Volvo Penta SX-MTD
-   Volvo Penta SX-MTD3
-   Volvo Penta SX-RT1

-   **Engine Family:** SX

## ⚙️ Key Features

-   For the 1.51:1 and 1.79:1 ratios
-   2.06 kg
-   Supersedes 3850937
-   14 applications on the SX series

## 🔌 Function

Provides the meshed gear pair that turns the drive through its designed reduction ratio.

## ⚠️ Common Signs of Failure

-   Whine or howl from the drive that rises and falls with load
-   Metal glitter or chips on the oil drain magnet
-   Tooth flanks pitted, scuffed or with a broken tooth
-   Backlash grown well past specification
-   Overheating drive oil with a burnt smell

## 🛠️ Service Notes

-   Ratio is the only thing separating the four sets here - 1.51:1 and 1.79:1 as this part, 1.60:1 and 1.89:1 as 3852403, 1.66:1 and 1.97:1 as 3852404 and 2.18:1 as 3852405 - so confirm the ratio from the drive plate before ordering
-   Renew the bearings and reset shims and backlash to specification whenever a gear set is changed
-   Gears are supplied as a matched set and must be fitted as a pair

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   3852402 → Supersedes 3850937

### OEM / Related Numbers

-   3850937 earlier number superseded by this part

## 📦 Condition

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

## Details

- **Price:** 2325.03 AUD
- **Vendor:** Volvo Penta
- **Type:** Transmission & Gearbox
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2325.03 AUD | In stock |

## Images

- 3852402 Drive Gear Set | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3852402-drive-gear-set-genuine-volvo-penta)
> Updated: 2026-10-10