20798827 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Injector O-Ring - Part Number: 20798827

OEM sealing component used in the common-rail injector installation and sealing. It restores the specified fluid-, air- or gas-tight interface when the adjoining parts are serviced.

⚙️ Key Features

• Calibrated common-rail injector/nozzle and control-valve assembly

• Maintains the specified opening, delivery and spray characteristics

• Supports clean combustion, cylinder balance and rated engine output

• Requires clean fuel, correct coding/calibration procedure and new sealing components

• Professional test-bench verification is recommended before reuse or overhaul

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20798827 (OEM catalogue reference)

OEM / Related Numbers:

• 20798114 injector

• 3803977 exchange injector

• 20827892 injector claw

• 20798827 injector O-ring

• 20799064 injector sealing ring

• 20799719 injector retaining screw

Aftermarket / Verified Equivalents:

• Olsson Parts: 52005

🚤 Compatibility

Commonly used on:

• Common-rail injector installation and sealing

Typically suits:

• Engine models:

• TAD550GE; TAD551GE; TAD750GE; TAD750VE; TAD751GE; TAD752GE

• HP Range: Approximately 180-300 HP, depending on engine rating

• Engine Type: 5.7 L and 7 L common-rail diesel

• Year Range: Approximately 2000s-2010s

🔌 Function

Prevents leakage and contamination at the designated joint while maintaining the required separation between combustion gas, oil, coolant, fuel or intake air.

Common signs of failure:

• Hard starting, extended cranking or no-start

• Rough idle, misfire or cylinder imbalance

• Black, white or grey exhaust smoke

• Reduced power and increased fuel consumption

• Injector knock, excessive leak-off, poor spray pattern or calibration fault

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging