# 21088049 Overflow Valve | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Overflow Valve - Part Number: 21088049

  

Brand-new genuine Volvo Penta calibrated fuel overflow valve used in the low-pressure fuel circuit on selected TAD13 generator and industrial engines. Installed with the specified hollow screw and sealing rings, it maintains fuel-gallery backpressure and meters excess fuel into the return circuit.

  

⚙️ Key Features

  

• Calibrated fuel-return pressure valve for the TAD13 fuel system

• Maintains stable low-pressure supply to the unit-injector circuit

• Banjo-style installation with hollow screw 978197

• Works with sealing rings and fuel hoses specified in the original schematic

• Valve only; hollow screw, seals and hoses are separate

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21088049 - Current Volvo Penta reference

  

OEM / Related Numbers:

  

• Volvo Penta 21088049

• VOE21088049

• Hollow screw 978197

• Fuel hose 21354197

• Sealing ring 20852764

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• TAD13 fuel-supply and return systems

  

Typically suits:

  

• Engine models:

• TAD1340VE

• TAD1341GE

• TAD1341VE

• TAD1342GE

• TAD1342VE

• TAD1343GE

• TAD1343VE

• TAD1344GE

• TAD1345GE

• TAD1350GE

• TAD1351GE

• TAD1352GE

• TAD1353GE

• TAD1354GE

• TAD1355GE

  

• Engine Type: Volvo Penta 12.8-litre inline six-cylinder industrial diesel

• Model / Serial Data: Used in the standard/alternative TAD13 fuel-system layouts that specify valve 21088049; later fuel-system revisions may use a different overflow valve.

  

🔌 Function

  

Regulates return flow so the low-pressure fuel gallery retains the pressure required for reliable filling, cooling and purging of the injector supply circuit.

  

Common signs of failure:

  

• Long cranking or difficult hot starting

• Low fuel-supply pressure and unstable idle

• Loss of power under load

• Excessive fuel return flow

• Leakage at the valve, hollow screw or sealing rings

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 279.04 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 279.04 AUD | In stock |

## Images

- 21088049 Overflow Valve | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21088049-overflow-valve-genuine-volvo-penta)
> Updated: 2026-08-02