20939275 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Fuel-System O-Ring - Part Number: 20939275

OEM sealing component used in the common-rail low-pressure fuel supply and return assembly. It restores the intended fluid-, air- or gas-tight interface when the adjoining parts are serviced.

⚙️ Key Features

• Manufactured to the original Volvo Penta dimensional and material specification

• Maintains correct fit, alignment and service access

• Designed for diesel-engine heat, vibration and operating load

• Direct replacement for a worn, damaged or missing original component

• Must be matched by part number, engine product and serial/configuration

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20939275 (OEM catalogue reference)

OEM / Related Numbers:

• Fuel filter, transfer pump, fuel rail, return line, sealing rings and hose/pipe fittings

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Common-rail low-pressure fuel supply and return assembly

Typically suits:

• Engine models:

• TAD550GE; TAD551GE; TAD560VE; TAD650VE; TAD660VE; TAD734GE; TAD750GE; TAD750VE; TAD751GE; TAD752GE; TAD753GE; TAD754GE; TAD760VE; TAD761VE

• HP Range: Approximately 170-320 HP, depending on engine rating

• Engine Type: Four- and six-cylinder common-rail diesel

• Year Range: Approximately 2000s-2010s

🔌 Function

Prevents leakage and contamination at the designated joint while maintaining the required separation between operating fluids or gases.

Common signs of failure:

• Oil, coolant, fuel, air or gas leakage at the joint

• Hardening, flattening, tearing or compression set

• Wetness, staining or residue around mating surfaces

• Loss of system pressure or contamination entry

• Leakage returning after reuse or incorrect installation

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging