# 78708705 Exhaust Outlet | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta exhaust outlet from the Inlet and Exhaust System group, weighing 9.305 kg and listed for 4 applications across TWD series engines. It supersedes part number 21562753. Exhaust outlet 78708707 at 9.427 kg is the near-identical sibling, and it supersedes a different number.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TWD1644-45GE
-   Volvo Penta TWD1682-83GE
-   Volvo Penta TWD1672-1673GE
-   Volvo Penta TWD1744GE

-   **Engine Family:** TWD

## ⚙️ Key Features

-   9.305 kg
-   4 applications across the TWD series
-   Supersedes 21562753
-   Distinct from outlet 78708707, which supersedes 23518187

## 🔌 Function

Forms the engine's exhaust outlet connection, directing exhaust gas from the turbocharger or manifold into the exhaust system.

## ⚠️ Common Signs of Failure

-   Exhaust fumes or noise in the engine space
-   Soot staining radiating from the flange joints
-   Flange faces warped or eaten by corrosion
-   Cracks in the casting, often at a flange corner or a mounting boss
-   Flange studs pulled or nuts loose from thermal movement

## 🛠️ Service Notes

-   At over nine kilos this needs supporting during removal and fitting - do not let it hang on the flange studs
-   Renew all exhaust gaskets and any corroded studs and nuts, and check the flange faces are flat before assembly
-   The two outlets are only 122 grams apart, so weight will not separate them - order by part number, using 21562753 as the old reference for this one

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   78708705 → Supersedes 21562753

### OEM / Related Numbers

-   21562753 earlier number superseded by this part

## 📦 Condition

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

## Details

- **Price:** 3323.72 AUD
- **Vendor:** Volvo Penta
- **Type:** Inlet & Exhaust
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 3323.72 AUD | In stock |

## Images

- 78708705 Exhaust Outlet | Genuine Volvo Penta Part
- 78708705 Exhaust Outlet | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/78708705-exhaust-outlet-genuine-volvo-penta)
> Updated: 2026-09-21