# 21178107 Plug | Genuine Volvo Penta Part

## 🔧 Product Description

Brand-new genuine Volvo Penta threaded gallery plug used at six repeated positions in the applicable D13/TAD13 engine assembly. The plug closes the machined oil or coolant passage after production and maintains the pressure seal through engine heat cycles.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta 5.7GXiC-J
-   Volvo Penta 5.7GXiC-JF
-   Volvo Penta 5.7GXiCE-JF
-   Volvo Penta 5.7GXiCE-J
-   Volvo Penta 5.7GXiCE-M
-   Volvo Penta 5.7GiCE-300-M
-   Volvo Penta 5.7GiCE-300-MF
-   Volvo Penta 5.7GiC-300-J
-   Volvo Penta 5.7GiCE-300-J
-   Volvo Penta 5.7GiCE-300-JF
-   Volvo Penta 5.7GiC-300-JF
-   Volvo Penta 5.0GiC-J
-   Volvo Penta 5.0GXiCE-JF
-   Volvo Penta 5.0GXiCE-J
-   Volvo Penta 5.0GXiC-JF
-   Volvo Penta 5.0GXiCE-M
-   Volvo Penta 5.0GXiCE-MF
-   Volvo Penta 5.0GXiC-J
-   Volvo Penta 3.0GXiC-J
-   Volvo Penta 3.0GXi-J

## ⚙️ Key Features

-   Six plugs used in the applicable six-cylinder assembly
-   Designed for engine oil/coolant pressure and temperature
-   Individual service plug
-   Seal or thread compound is separate where specified
-   Engine type: Volvo Penta 12.8-litre inline six-cylinder diesel
-   Quantity varies by assembly, most commonly six

## 🔌 Function

Closes the machined engine gallery so the internal oil or coolant circuit remains sealed and clean.

## ⚠️ Common Signs of Failure

-   Fluid seepage around the plug
-   Damaged or crossed threads
-   Plug loosening after heat cycling
-   Missing sealing compound or washer
-   Cracked gallery boss from overtightening

## 🛠️ 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

### Other-Brand OEM Numbers

-   VOE21178107

## 📦 Condition

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

## Details

- **Price:** 34.89 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 34.89 AUD | In stock |

## Images

- 21178107 Plug | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21178107-plug-genuine-volvo-penta)
> Updated: 2026-10-10