# 21670190 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Fuel-Regulator O-Ring - Part Number: 21670190

  

A genuine elastomer O-ring used in the TAD550GE fuel-regulator and overflow-valve assembly. O-ring 21670190 has a position-specific diameter and cross-section and must not be substituted with the adjacent seal.

  

⚙️ Key Features

  

• Genuine Volvo Penta fuel-system O-ring

• Position-specific size and material

• Compatible with diesel fuel

• Maintains regulator and valve sealing

• Single-use service component

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21670190 (current OEM reference)

  

OEM / Related Numbers:

  

• 21638691 - fuel regulator

• 21670181 - overflow valve

• 21670186 - associated O-ring

• 21670190 - associated O-ring

• 21738263 - solenoid valve

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta TAD550GE and TAD750-series generator-drive engine systems

  

Typically suits:

  

• Engine models:

• TAD550GE, TAD551GE

• TAD750GE, TAD751GE, TAD752GE, TAD753GE, TAD754GE

  

• HP Range: Generator rating dependent

• Engine Type: 5.1L inline four-cylinder or 7.15L inline six-cylinder turbocharged generator diesel

• Year Range: Approximately 2008 - 2020

• Fitment Note: Confirm seal position, lubricate with clean diesel fuel and do not reuse.

  

🔌 Function

  

Seals the specified fuel-regulator or overflow-valve joint and prevents fuel leakage or air entry.

  

Common signs of failure:

  

• Diesel seepage

• Air entering the fuel circuit

• Flattening, cuts or swelling

• Pressure loss

• Recurring leakage from a damaged groove

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 3.49 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 3.49 AUD | In stock |

## Images

- 21670190 O-Ring | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21670190-o-ring-genuine-volvo-penta)
> Updated: 2026-08-03