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