# 21304745 Hose Clamp | Genuine Volvo Penta Part

## 🔧 Product Description

A stainless-steel clamp used to secure large wet-exhaust hoses and exhaust-riser connections on selected Volvo Penta D6, D8 and D13 marine engines.

## 🚤 Compatibility

-   **Engine Family:** D

Full model list at the end of this description.

## ⚙️ Key Features

-   Designed for wet-exhaust hose connections
-   Stainless-steel corrosion-resistant construction
-   Commonly four required per applicable riser installation
-   Engine type: Turbocharged marine diesel
-   4 used per assembly

## 🔌 Function

Compresses the exhaust hose around the riser or pipe to maintain a gas- and seawater-tight connection.

## ⚠️ Common Signs of Failure

-   Exhaust or water leakage
-   Corroded clamp band
-   Stripped tightening mechanism
-   Hose movement under engine load
-   Uneven clamping or damaged hose reinforcement

## 🛠️ Service Notes

-   Match the clamp to the hose outside diameter so the band closes well within its working range rather than at the very end of its travel
-   Position it over the spigot behind the bead or barb, with the screw where a driver or spanner can still reach it once everything is refitted
-   Tighten to seal, not to crush — an over-tightened worm-drive clamp cuts into soft hose and starts the leak you were trying to stop
-   Renew clamps when a hose is changed rather than reusing them, and keep band, housing and screw all marine-grade stainless so the clamp does not corrode against itself
-   Where two clamps are fitted to one connection, stagger the screw heads and recheck both after the first running period

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   78467551 and 23034952 - related exhaust risers
-   21231761 - approximately 875 mm exhaust hose
-   21126692 - exhaust-temperature sensor
-   947281 and 23064223 - gaskets

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D13C1-B MH, D13C2-B MP, D13C1-A MP, D13C2-A MP, D13C3-A MP, D13C4-A MP, D13B-A MP, D13B-H MP, D13B-G MP, D13B-L MP, D13B-E MH, D13B-E MH (FE), D13B-K MP, D13B-N MH, D13B-N MH (FE), D13B-B MP, D13B-D MP, D13B-J MP, D13B-M MP, D13B-C MP, D13C4-B MP, D13C6-A MP, D13C5-B MP, D13C5-A MP, D13C7-B MP, D13C8-B MP, D13C9-A MP

## Details

- **Price:** 19.09 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 19.09 AUD | In stock |

## Images

- 21304745 Hose Clamp | Genuine Volvo Penta Part
- 21304745 Hose Clamp | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21304745-hose-clamp-genuine-volvo-penta)
> Updated: 2026-09-06