20799587 Flange Screw | Genuine Volvo Penta Part

🔧 Product Description

OEM fastening or load-distribution component used in the common-rail d5/d7 piston and connecting-rod assembly. It restores the specified thread, strength, length and clamping geometry required by the original Volvo Penta assembly.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD650VE
• Volvo Penta TAD660VE

• Engine Family: TAD
• HP Range: Approximately 300 HP
• Year Range: Approximately 2000s-2010s

⚙️ Key Features

• Flange screw from the common-rail D5 and D7 piston and connecting-rod assembly
• 0.042 kg
• 2 applications across TAD-series engines
• Engine group

🔌 Function

Clamps the connecting-rod or piston assembly joint, holding the load through the reversing forces of the bottom end.

⚠️ Common Signs of Failure

• A knock from the bottom end, heaviest under load
• Metal flake in the oil or on the filter element
• Screw found backed off or stretched on strip-down
• Thread galled, or the head face fretted against the mating part
• Witness marks showing the joint has been moving

🛠️ Service Notes

• Bottom-end fasteners are frequently single-use and angle-tightened - check the workshop manual before reusing anything from this joint
• Lock washer 20798548 is listed for the same two applications, so check whether it is to be renewed at the same time

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 20798025 connecting rod
• 20798843 piston pin
• 20799647 small-end piston bushing
• 20850096 and 20850097 big-end bearing kits
• 3884641 piston and cylinder-liner kit
• 20799069 piston-ring set
• 21119635 piston-pin snap ring

📦 Condition

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