# 78509620 Block | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta block with a 12.7 mm inside diameter, weighing 0.017 kg and listed for 19 applications across the TAD and TWD series engines. It is the smaller-bore partner to block 78509615, which is 19.1 mm inside diameter at the identical published weight and the identical 19 applications.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD1180-83VE
-   Volvo Penta TAD1360-62VE
-   Volvo Penta TAD1363-65VE
-   Volvo Penta TAD1640VE-B
-   Volvo Penta TAD1641VE-B
-   Volvo Penta TAD1642VE-B
-   Volvo Penta TAD1660-62VE
-   Volvo Penta TAD1662VE EU5
-   Volvo Penta TAD1340VE
-   Volvo Penta TAD1341VE
-   Volvo Penta TAD1342VE
-   Volvo Penta TAD1343VE
-   Volvo Penta TAD1344VE
-   Volvo Penta TAD1345VE
-   Volvo Penta TAD1350VE
-   Volvo Penta TAD1170-72VE
-   Volvo Penta TWD1683VE
-   Volvo Penta TAD1150-52VE
-   Volvo Penta TAD1140-42VE

-   **Engine Family:** TAD, TWD

## ⚙️ Key Features

-   12.7 mm inside diameter
-   0.017 kg
-   19 applications across TAD and TWD engines
-   Same weight and fitment as 78509615, so order by bore

## 🔌 Function

Grips a pipe or hose of matching diameter and holds it secure at its mounting.

## ⚠️ Common Signs of Failure

-   Pipe working loose in the block and rubbing
-   Block cracked through the clamping section
-   Polished or worn seat where the pipe has moved
-   Mounting fastener slack or absent

## 🛠️ Service Notes

-   Order by bore size, since 78509615 has the same 0.017 kg weight and the same 19 applications and only the 12.7 mm against 19.1 mm inside diameter tells them apart
-   Check the pipe for chafe damage at the clamp point before refitting

## 📦 Condition

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

## Details

- **Price:** 32.57 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 32.57 AUD | In stock |

## Images

- 78509620 Block | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/78509620-block-genuine-volvo-penta)
> Updated: 2026-09-20