# 20508600 Plug | Genuine Volvo Penta Part

## 🔧 Product Description

This genuine Volvo Penta plug is an OEM service component used in the Cylinder-Block / Gallery Plug. It is manufactured to the original Volvo Penta dimensional, material and interface requirements for the documented Volvo D7A industrial diesel application. Technical identification: Threaded closure plug used in the D7 cylinder/crankcase assembly. In service, it closes the specified machined opening or service port and retains the circuit fluid or pressure. Selection must be confirmed by OEM part number 20508600, the exact model/product number, serial number and installed assembly configuration.

## 🚤 Compatibility

-   **Engine Family:** D, TD, TAD, MD

Full model list at the end of this description.

## ⚙️ Key Features

-   OEM part number 20508600
-   Technical distinction: Threaded closure plug used in the D7 cylinder/crankcase assembly

## 🔌 Function

Closes the specified machined opening or service port and retains the circuit fluid or pressure. Confirm dimensions, thread and strength class, inspect mating threads/contact faces and tighten to the Volvo Penta torque and locking specification.

## ⚠️ Common Signs of Failure

-   Oil or coolant weeping from the plug seat, most obvious on a cold engine
-   A drip or wet trail down the block below the plug
-   Fluid level falling with no other visible source of loss
-   On removal, the sealing face pitted, scored or corroded
-   Damaged threads, or a plug that will not hold its torque

## 🛠️ Service Notes

-   This plug has an M14 thread - confirm the size against the opening, as the block carries plugs of several sizes
-   Clean the tapped bore and check the seat before refitting; a plug will not seal against a damaged face

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D7A-B TA, D7A-T, D7A-TA, D7C-B TA, D7C-TA
-   Volvo Penta D5A-B TA, D5A-T, D5A-TA
-   Volvo Penta MD2010, MD2010B
-   Volvo Penta TAD520GE, TAD520VE
-   Volvo Penta TAD530GE MECH, TAD530GE EDC4
-   Volvo Penta TAD531GE MECH, TAD531GE EDC4
-   Volvo Penta TAD720GE, TAD720VE
-   Volvo Penta TAD730GE MECH, TAD730GE EDC4
-   Volvo Penta TAD731GE MECH, TAD731GE EDC4
-   Volvo Penta TAD750GE, TAD750VE
-   Volvo Penta TAD532GE EDC4
-   Volvo Penta TAD550GE
-   Volvo Penta TAD551GE
-   Volvo Penta TAD650VE
-   Volvo Penta TAD660VE
-   Volvo Penta TAD721VE
-   Volvo Penta TAD751GE
-   Volvo Penta TAD760VE
-   Volvo Penta TD720VE PP

## Details

- **Price:** 14.78 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 14.78 AUD | In stock |

## Images

- 20508600 Plug | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20508600-plug-genuine-volvo-penta)
> Updated: 2026-10-08