# 20405847 Valve | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta fuel-system valve used in the injector delivery-pipe and leak-off circuit on D5 and D7 mechanical-injection engines. It regulates low-pressure return flow so the unit-pump supply and injector leak-off circuit retain the required fuel pressure.

## 🚤 Compatibility

-   **Engine Family:** D, TD, TAD, MD

Full model list at the end of this description.

## ⚙️ Key Features

-   Low-pressure fuel return and overflow-control valve
-   Used with Stage 1 and Stage 2 unit injection-pump systems
-   Confirmed beside injector leak-off pipes and banjo fittings
-   Maintains controlled fuel circulation and removes heated return fuel
-   Valve cleanliness and seating are critical to reliable starting and fuel pressure
-   Engine type: Volvo Penta four- and six-cylinder mechanical-injection diesel

## 🔌 Function

Controls return-fuel flow and helps maintain the required low-pressure fuel condition around the unit pumps and injector leak-off circuit.

## ⚠️ Common Signs of Failure

-   Hard starting after the engine has been stopped
-   Low fuel-supply pressure
-   Excessive return flow or loss of prime
-   Fuel leakage around the valve connection
-   Valve sticking from dirt or fuel contamination

## 🛠️ Service Notes

-   Work clean — a valve is a precision component, and dirt or swarf carried in on the sealing faces is the commonest reason a new one fails early
-   Fit new sealing rings, gaskets or washers wherever the original used them rather than reusing the old ones, and lubricate them lightly so they seat without rolling or nipping
-   Check the seat, bore or housing the valve fits into for corrosion, scoring or distortion; a valve only seals as well as the face it beds on
-   Tighten fixings and threaded connections to the figures and in the order given in the workshop manual for your engine — a valve body is easily distorted by overtightening
-   After fitting, bleed or refill the system as required, then run the engine and check the valve for leaks and for correct operation before the boat is used

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20581916 - related EDC-system nipple
-   969011 - sealing gaskets
-   20450673 - EDC spacer
-   888768 - related leak-off pipe
-   20550302 - related spacer sleeve / bushing

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D7A-B TA, D7A-T, D7A-TA, D7C-B TA, D7C-TA
-   Volvo Penta D5A-B TA, D5A-T, D5A-TA
-   Volvo Penta MD2010, MD2010B
-   Volvo Penta TAD520GE, TAD520VE
-   Volvo Penta TAD530GE MECH, TAD530GE EDC4
-   Volvo Penta TAD531GE MECH, TAD531GE EDC4
-   Volvo Penta TAD720GE, TAD720VE
-   Volvo Penta TAD721GE, TAD721VE
-   Volvo Penta TAD722GE, TAD722VE
-   Volvo Penta TAD730GE MECH, TAD730GE EDC4
-   Volvo Penta TAD731GE MECH, TAD731GE EDC4
-   Volvo Penta TD520GE, TD520VE
-   Volvo Penta TD720GE, TD720VE PP
-   Volvo Penta TAD420VE
-   Volvo Penta TAD532GE EDC4
-   Volvo Penta TAD620VE
-   Volvo Penta TAD732GE EDC4
-   Volvo Penta TAD733GE EDC4
-   Volvo Penta TD420VE

## Details

- **Price:** 79.08 AUD
- **Vendor:** Volvo Penta
- **Type:** Fuel System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 79.08 AUD | In stock |

## Images

- 20405847 Valve | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20405847-valve-genuine-volvo-penta)
> Updated: 2026-10-12