# 21140647 Overflow Valve | Genuine Volvo Penta Part

## 🔧 Product Description

Brand-new genuine Volvo Penta calibrated overflow valve used in the low-pressure fuel-return circuit on selected D11, D13 and D16 industrial engines. The valve maintains the designed fuel-gallery backpressure and meters excess fuel into the return line.

## 🚤 Compatibility

-   **Engine Family:** TAD, TWD
-   **Serial Range:** SN2016111524-

Full model list at the end of this description.

## ⚙️ Key Features

-   Calibrated low-pressure fuel-system valve
-   Maintains stable supply pressure to the injection system
-   Allows controlled return of excess fuel
-   Original thread and sealing arrangement
-   Valve only; hollow screw, lines and seals are separate
-   Engine type: Volvo Penta electronically controlled inline six-cylinder industrial diesel
-   Also supersedes Volvo part numbers 3593826 and 3888407

## 🔌 Function

Regulates return flow to retain sufficient feed pressure for reliable injection-system filling, cooling and purging.

## ⚠️ Common Signs of Failure

-   Long cranking or difficult hot starting
-   Low fuel-feed pressure
-   Unstable idle or loss of power
-   Excessive return flow
-   Diesel leakage at the valve connection

## 🛠️ Service Notes

-   Treat it as a sealed, non-adjustable unit — renew it rather than attempting to clean, shim or adjust the internals
-   Work clean: cap the openings, wipe the area down before opening the fuel system, and do not let dirt or fibres into the fuel side while the valve is off
-   Renew the sealing washers, O-rings or gasket that come with the valve, and never reuse a crushed copper or aluminium washer
-   Tighten to the figure in the workshop manual for your engine; these valves screw into fuel housings and heads that strip readily
-   Bleed and prime the fuel system as the manual for your engine describes, then run the engine and check the joint for weeping under working pressure

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   21140647 → Supersedes 21162591

### Other-Brand OEM Numbers

-   VOE21140647

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta TAD1640-42GE-B, TAD1640GE, TAD1640VE-B, TAD1640-42VE-C
-   Volvo Penta TAD1341-43GE-B, TAD1341VE, TAD1341GE
-   Volvo Penta TAD1344-45GE-B, TAD1344VE, TAD1344GE
-   Volvo Penta TAD1641VE-B, TAD1641GE, TAD1641VE
-   Volvo Penta TAD1642VE-B, TAD1642GE, TAD1642VE
-   Volvo Penta TAD1342VE, TAD1342GE
-   Volvo Penta TAD1343VE, TAD1343GE
-   Volvo Penta TAD1345GE, TAD1345VE
-   Volvo Penta TAD1350GE, TAD1350VE
-   Volvo Penta TAD1351GE, TAD1351-53VE
-   Volvo Penta TAD1643VE-B, TAD1643VE
-   Volvo Penta TAD1650VE-B/51VE, TAD1650GE
-   Volvo Penta TWD1683GE-B, TWD1683VE
-   Volvo Penta TAD1140-42VE
-   Volvo Penta TAD1150-52VE
-   Volvo Penta TAD1170-72VE
-   Volvo Penta TAD1180-83VE
-   Volvo Penta TAD1340VE
-   Volvo Penta TAD1346GE
-   Volvo Penta TAD1352GE
-   Volvo Penta TAD1353GE
-   Volvo Penta TAD1354GE
-   Volvo Penta TAD1355GE
-   Volvo Penta TAD1360-62VE
-   Volvo Penta TAD1363-65VE
-   Volvo Penta TAD1371-75VE
-   Volvo Penta TAD1380-82GE
-   Volvo Penta TAD1381-85VE
-   Volvo Penta TAD1384-85VE-IWP
-   Volvo Penta TAD1651GE
-   Volvo Penta TAD1660-62VE
-   Volvo Penta TAD1662VE EU5
-   Volvo Penta TAD1670-72VE
-   Volvo Penta TWD1643GE
-   Volvo Penta TWD1644-45GE
-   Volvo Penta TWD1652GE
-   Volvo Penta TWD1653GE
-   Volvo Penta TWD1663GE
-   Volvo Penta TWD1672-1673GE
-   Volvo Penta TWD1682-83GE
-   Volvo Penta TWD1744GE

## Details

- **Price:** 388.5 AUD
- **Vendor:** Volvo Penta
- **Type:** Fuel System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 388.50 AUD | In stock |

## Images

- 21140647 Overflow Valve | Genuine Volvo Penta Part
- 21140647 Overflow Valve | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21140647-overflow-valve-genuine-volvo-penta)
> Updated: 2026-09-06