21141582 Hollow Screw | Genuine Volvo Penta Part

🔧 Product Description

Brand-new genuine Volvo Penta hollow screw used in the low-pressure fuel and leak-off plumbing on TAD5 and TAD7 engines. Cross-drilled internal passages allow diesel to flow through the banjo connection while the screw provides the mechanical clamp load.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD550GE
• Volvo Penta TAD551GE
• Volvo Penta TAD750GE
• Volvo Penta TAD751GE
• Volvo Penta TAD750VE
• Volvo Penta TAD760VE

• Engine Family: TAD

⚙️ Key Features

• Cross-drilled fuel banjo screw
• Original thread, length and internal passage diameter
• Used in pump, return and leak-off line connections
• Requires the specified sealing washers/rings
• One hollow screw supplied
• Engine type: Volvo Penta 5- and 7-litre common-rail industrial diesel

🔌 Function

Clamps the banjo fitting and provides an internal passage for fuel supply or return flow.

⚠️ Common Signs of Failure

• Diesel leakage at the sealing washers
• Restricted fuel flow from contamination
• Cracked banjo fitting from over-tightening

🛠️ Service Notes

• Check the through-passage is clear and clean before fitting; a blocked hollow screw starves whatever it feeds
• Always fit new sealing washers, one each side of the union where the original had them, and never reuse a crushed washer
• Hold the fitting or pipe end against turning as you tighten, so the line is not twisted and the union is not pulled out of position
• Tighten to the figure in the workshop manual for your engine — these seal by crushing the washer, not by force, and over-tightening splits the head or shears the shank
• Bring the system up to working pressure and check for weeps before closing the space up

🔄 Supersession & Cross Reference

OEM / Related Numbers

• High-pressure pump 21147445
• Leak-off line 21156370

Other-Brand OEM Numbers

• VOE21141582

📦 Condition

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