# 11031785 Plug | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta plug from the engine group, used to close off a machined port or passage on the engine so that fluid or pressure is retained within its intended circuit. It is specified for D13 marine propulsion units and the TAD, TWD and related industrial and generator-set engine families. Supplied as a single plug with a net weight of 0.117 kg.

## 🚤 Compatibility

-   **Engine Family:** D, TAD, TWD
-   **Year Range:** Approximately 1990s - 2010s

Full model list at the end of this description.

## ⚙️ Key Features

-   OEM Volvo Penta part number 11031785
-   System group: Engine
-   Net weight: 0.117 kg
-   Fits D13 marine propulsion engines and TAD/TWD 12-, 13- and 16-litre industrial and generator-set engines
-   Supplied as an individual component
-   Engine type: Volvo inline 6-cylinder turbo-diesel

## 🔌 Function

The plug seals a machined opening or service passage in the engine so that oil, coolant or pressure stays contained within the correct circuit. It also allows the port to be reopened for servicing, draining or inspection when required.

## ⚠️ Common Signs of Failure

-   Fluid seepage, weeping or staining around the plug seat
-   Corrosion or pitting on the plug body or sealing face
-   Damaged, stripped or seized threads preventing correct torque
-   Plug working loose in service, leading to pressure or fluid loss
-   Deformed or flattened sealing surface after previous removal and refitting

## 🛠️ Service Notes

-   Clean the threads and the seating face before fitting, and make sure the opening itself is clear of old sealant, swarf and corrosion
-   Renew the sealing washer or O-ring where one is fitted rather than reusing a flattened one, and only use thread sealant where the workshop manual for your engine calls for it
-   Tighten to the figure given in the workshop manual for your engine — plugs in aluminium and other soft castings strip easily, and a plug pulled up hard to cure a leak usually distorts the seat and makes it worse
-   Where the plug closes an oil, fuel or coolant passage, run the engine up to temperature afterwards and check the joint under pressure before signing the job off
-   Keep removed plugs paired with the holes they came out of during a strip-down — plugs of very similar appearance often differ in thread, reach or sealing type

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   11031769 related lock washer

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D13C2-B MP, D13C4-B MP, D13C5-B MP, D13C7-B MP, D13C8-B MP
-   Volvo Penta TAD1241GE, TAD1241VE, TAD1241-42VE
-   Volvo Penta TAD1242GE, TAD1242VE
-   Volvo Penta TAD1250VE, TAD1250-52VE
-   Volvo Penta TAD1643VE-B, TAD1643VE
-   Volvo Penta TAD1650VE-B/51VE, TAD1650VE
-   Volvo Penta TAD1240GE
-   Volvo Penta TAD1251VE
-   Volvo Penta TAD1252VE
-   Volvo Penta TAD1340VE
-   Volvo Penta TAD1341VE
-   Volvo Penta TAD1342VE
-   Volvo Penta TAD1343VE
-   Volvo Penta TAD1344VE
-   Volvo Penta TAD1345VE
-   Volvo Penta TAD1350VE
-   Volvo Penta TAD1351-53VE
-   Volvo Penta TAD1360-62VE
-   Volvo Penta TAD1363-65VE
-   Volvo Penta TAD1371-75VE
-   Volvo Penta TAD1380-82GE
-   Volvo Penta TAD1381-85VE
-   Volvo Penta TAD1384-85VE-IWP
-   Volvo Penta TAD1641VE
-   Volvo Penta TAD1642VE
-   Volvo Penta TAD1660-62VE
-   Volvo Penta TAD1662VE EU5
-   Volvo Penta TAD1670-72VE
-   Volvo Penta TWD1240VE

## Details

- **Price:** 13.96 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta Parts | Genuine Marine Engine & Service Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 13.96 AUD | In stock |

## Images

- 11031785 Plug | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/11031785-plug-genuine-volvo-penta)
> Updated: 2026-10-09