6642578 Hollow Screw | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta hollow screw from the Fuel System group, weighing 0.034 kg and listed for 9 applications across TMD, MS, TAMD and MD series engines. Fuel passes through the screw itself, so its bore is as important as its thread.

🚤 Compatibility

Typically suits:

• Volvo Penta TMD22A
• Volvo Penta TMD22B
• Volvo Penta TMD22P-C
• Volvo Penta MS2B-A
• Volvo Penta TAMD22P-B
• Volvo Penta MD22
• Volvo Penta MD22A
• Volvo Penta MD22L
• Volvo Penta MD22P

• Engine Family: TMD, MS, TAMD, MD

⚙️ Key Features

• 0.034 kg
• 9 applications across TMD, MS, TAMD and MD series engines
• Fuel passes through the screw itself
• Fitted with banjo nipple 6613554 in the same connection group
• 2 used per assembly

🔌 Function

Clamps a fuel connection while carrying fuel flow through its own bore.

⚠️ Common Signs of Failure

• Fuel weeping from the union
• Bore or drillings blocked by debris, restricting flow
• Sealing faces coned or nicked from over-tightening
• Thread stripped or the hex rounded off
• Air drawn into the fuel system, giving hunting or hard starting

🛠️ Service Notes

• Banjo nipple 6613554 has the same published weight of 0.034 kg and the same 9 applications, so order these two by part number rather than by weight
• Fit new sealing washers on both sides of the connection and check the bore is clear
• Bleed the fuel system after reassembly

📦 Condition

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