# 3856724 Bolt | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta bolt for the SX drives, from the Marine Propulsion group, weighing 0.064 kg and listed for 17 applications across the DP and SX series. The matching DP-S bolt is 3856725 at 0.057 kg, so the two are told apart by the note, not by feel.

## 🚤 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-C
-   Volvo Penta SX-C1
-   Volvo Penta SX-C2
-   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:** DP, SX

## ⚙️ Key Features

-   Marked SX
-   0.064 kg
-   17 applications across the DP and SX series
-   The DP-S equivalent is 3856725

## 🔌 Function

Clamps two components together with a set tension, holding the joint tight against vibration and load.

## ⚠️ Common Signs of Failure

-   Bolt loose, or the joint it clamps moving
-   Thread corroded, stretched or picked up
-   Head corners rounded off
-   Bolt snapped or its thread stripped in the casting

## 🛠️ Service Notes

-   SX and DP-S take different bolts here — check which drive you have before ordering
-   Clean the threads, use the specified thread treatment and pull to the correct torque

## 📦 Condition

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

## Details

- **Price:** 7.55 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 7.55 AUD | In stock |

## Images

- 3856724 Bolt | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3856724-bolt-genuine-volvo-penta)
> Updated: 2026-10-08