# 3852349 Screw | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta screw for the rear position, weighing 45.4 g and listed for 14 applications across the DP and SX drive series. It supersedes part number 21777123, catalogued earlier as a hexagon screw.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta DP-S
-   Volvo Penta DP-S1
-   Volvo Penta DP-SM
-   Volvo Penta DP-SMTD
-   Volvo Penta DP-SMTD1
-   Volvo Penta DP-SMTD3
-   Volvo Penta SX-RT2
-   Volvo Penta SX-S
-   Volvo Penta SX-ST
-   Volvo Penta SX-C1
-   Volvo Penta SX-C2
-   Volvo Penta SX-CT1
-   Volvo Penta SX-CT2
-   Volvo Penta SX-RT1

-   **Engine Family:** DP, SX

## ⚙️ Key Features

-   Rear position
-   45.4 g
-   Supersedes 21777123
-   14 applications across DP and SX

## 🔌 Function

Clamps the rear joint of the drive assembly at the designed tightening load.

## ⚠️ Common Signs of Failure

-   Rear joint working loose or showing movement
-   Thread stripped or pulled
-   Head corners rounded or badly corroded
-   Screw seized and shearing on removal

## 🛠️ Service Notes

-   Position matters - this is the rear screw, so check the manual illustration before fitting
-   Note that the number it replaces is the longer 21777123, so a search on the newer-looking number leads back here

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   3852349 → Supersedes 21777123

### OEM / Related Numbers

-   21777123 earlier number superseded by this part

## 📦 Condition

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

## Details

- **Price:** 21.84 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 21.84 AUD | In stock |

## Images

- 3852349 Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3852349-screw-genuine-volvo-penta)
> Updated: 2026-10-09