# 20805109 Quick Coupling | Genuine Volvo Penta Part

## 🔧 Product Description

Application-specific SCR/AdBlue Quick Coupling used in the SCR dosing, tank-heater and reductant-line assembly on the listed Volvo Penta engines. Creates a serviceable snap connection in the SCR or coolant line while retaining the internal fluid seal.

## 🚤 Compatibility

-   **Engine Family:** D, TAD, TWD, TADH
-   **HP Range:** Approximately 340-425 HP
-   **Year Range:** Approximately 2011 - 2020

Full model list at the end of this description.

## ⚙️ Key Features

-   Genuine Volvo Penta SCR/AdBlue Quick Coupling
-   Direct service replacement for part number 20805109
-   Designed for the SCR dosing, tank-heater and reductant-line assembly
-   Creates a serviceable snap connection in the SCR or coolant line while retaining the internal fluid seal
-   Catalogued for TAD1170VE; TAD1171VE; TAD1172VE
-   Engine type: 11-litre six-cylinder turbocharged industrial diesel with SCR aftertreatment
-   Quantity varies by assembly, most commonly three

## 🔌 Function

Creates a serviceable snap connection in the SCR or coolant line while retaining the internal fluid seal.

## ⚠️ Common Signs of Failure

-   White crystalline deposits around the coupling where reductant has crept out
-   Emissions warning and a drop in dosing pressure
-   Coupling that will not latch with a positive click when reconnected
-   Retaining clip found broken, or the internal seal hardened
-   Damp coolant or reductant trail below the connection

## 🛠️ Service Notes

-   Renew all disturbed sealing washers, O-rings, grommets and clamps.
-   Confirm the line is naturally aligned before tightening; do not pull it into position with the fasteners.

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   20805109 → Supersedes 20750480

### OEM / Related Numbers

-   20750480 earlier number superseded by this part
-   20805110 - companion SCR quick coupling
-   21574975 - AdBlue/DEF pump units
-   22851845 - AdBlue/DEF pump units
-   21516229 - filter
-   21376707 - filter cap
-   21376721 - connectors
-   21376731 - connectors
-   21376749 - connectors
-   21574984 - dosage valve
-   20767833 - support bracket
-   994556 - hose clamps
-   992082 - hose clamps
-   990536 - rubber hose

### Other-Brand OEM Numbers

-   VOE20805109 - Volvo Construction Equipment prefixed number format

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D13C3-B MH, D13C1-B MH, D13C4-B MH, D13C2-B MP, D13C1-A MP, D13C2-A MP, D13C3-A MP, D13C4-A MP, D13B-E MG, D13B-E MG (FE), D13B-E MH, D13B-E MH (FE), D13B-F MG, D13B-F MG (FE), D13B-N MH, D13B-N MH (FE), D13C4-B MP, D13C5-B MP, D13C6-A MP, D13C1-A MH, D13C2-A MH, D13C1-B MG, D13C3-B MG, D13C4-B MG, D13C2-B MG, D13C5-A MP, D13C2-A MG, D13C1-A MG, D13C7-B MP, D13C8-B MP
-   Volvo Penta TAD880-82GE, TAD880-84VE
-   Volvo Penta TADH880-82GE, TADH880-84VE
-   Volvo Penta TWD1683GE-B, TWD1683VE
-   Volvo Penta TAD1140-42VE
-   Volvo Penta TAD1150-52VE
-   Volvo Penta TAD1170-72VE
-   Volvo Penta TAD1180-83VE
-   Volvo Penta TAD1371-75VE
-   Volvo Penta TAD1380-82GE
-   Volvo Penta TAD1381-85VE
-   Volvo Penta TAD1384-85VE-IWP
-   Volvo Penta TAD1660-62VE
-   Volvo Penta TAD1662VE EU5
-   Volvo Penta TAD1670-72VE
-   Volvo Penta TAD570-72VE
-   Volvo Penta TAD580-83VE
-   Volvo Penta TAD870-73VE
-   Volvo Penta TWD1663GE
-   Volvo Penta TWD1672-1673GE
-   Volvo Penta TWD1682-83GE

## Details

- **Price:** 26.09 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 26.09 AUD | In stock |

## Images

- 20805109 Quick Coupling | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20805109-quick-coupling-genuine-volvo-penta)
> Updated: 2026-08-22