20797723 Leak-Off Line | Genuine Volvo Penta Part

🔧 Product Description

Formed fluid-transfer component used in the common-rail injector leak-off and fuel-return system. It maintains the original bore, routing, connection type and clearance around adjoining engine components.

🚤 Compatibility

Typically suits:

• Volvo Penta D7A-T
• Volvo Penta D7A-TA
• Volvo Penta D7C-TA

• Engine Family: D
• HP Range: Approximately 320 HP
• Year Range: Approximately 2000s-2010s

⚙️ 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
• Engine type: Four- and six-cylinder common-rail diesel

🔌 Function

Collects the small amount of fuel that bypasses the injector needles and control valves and carries it back into the return circuit, keeping the injector tops dry and the return flow at the pressure the system expects.

⚠️ Common Signs of Failure

• Hard starting, extended cranking or no-start
• Rough idle, misfire or cylinder imbalance
• Injector knock, excessive leak-off, poor spray pattern or calibration fault

🛠️ Service Notes

• An injector that appears to fail a leak-off test can be a split, chafed or blocked return line rather than a faulty injector - check the line and its connections before condemning the injector
• Support the line to its original routing and clearance when refitting, as chafing against adjoining components is a common cause of failure

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging