# 21451746 Pipe | Genuine Volvo Penta Part

## 🔧 Product Description

A rigid pipe used in the supercharger inlet or outlet system on selected Volvo Penta marine engines. It forms part of the air path around supercharger 21145185.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D11C2-A MP
-   Volvo Penta D11C4-A MP
-   Volvo Penta D11B4-A MP
-   Volvo Penta D11B2-A MP

-   **Engine Family:** D

## ⚙️ Key Features

-   Genuine Volvo Penta supercharger pipe
-   Designed for pressurised intake-air service
-   Correct factory bends and mounting points
-   Used with the original supercharger hose and bracket
-   Maintains unrestricted airflow
-   Engine type: Turbocharged and supercharged Volvo Penta marine diesel

## 🔌 Function

Carries intake air through the supercharger circuit.

## ⚠️ Common Signs of Failure

-   Boost leakage or hissing
-   Oil mist around a joint
-   Cracked pipe or mounting bracket
-   Increased black exhaust smoke

## 🛠️ Service Notes

-   Offer the pipe up and check it reaches both connections freely before you tighten anything — a rigid pipe pulled into place is a pipe left under permanent strain, and strained pipes crack at the fittings in service
-   Renew the sealing washers, O-rings or union seals that go with the pipe rather than reusing the old ones, and make sure the seats, faces and threads are clean
-   Keep the ends capped while you work and blow or flush a pipe through before fitting; anything left inside goes straight into the oil, fuel or coolant system
-   Tighten unions and banjo bolts evenly to the figures in the workshop manual for your engine — overtightening distorts the seat and starts the leak you were trying to cure
-   Refit every clip and support bracket in its original place and keep the pipe clear of hot or moving parts so it cannot chafe or be shaken to failure

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   21145185 - supercharger
-   22003447 - air inlet
-   21621971 - air outlet
-   21308577 - gasket
-   21211439 - bracket
-   21832376 - hose
-   981021 - V-ribbed belt

## 📦 Condition

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

## Details

- **Price:** 1376.89 AUD
- **Vendor:** Volvo Penta
- **Type:** Hoses & Pipes
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1376.89 AUD | In stock |

## Images

- 21451746 Pipe | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21451746-pipe-genuine-volvo-penta)
> Updated: 2026-10-10