21330777 Hollow Screw | Genuine Volvo Penta Part

🔧 Product Description

A hollow banjo-style screw used to secure a fluid fitting while allowing the assigned fluid to pass through its internal drilling.

🚤 Compatibility

• Engine Family: D
• HP Range: 180-435 HP

Full model list at the end of this description.

⚙️ Key Features

• Internal fluid passage
• Precision sealing faces
• Correct OEM thread
• Designed for the assigned pressure circuit

🔌 Function

The screw clamps the banjo fitting while providing a path for fluid flow.

⚠️ Common Signs of Failure

• Blocked passage
• Cracked or stretched screw

🛠️ 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 Supersession Chain

• 21330777 → Supersedes 21300827

OEM / Related Numbers

• 21300827 earlier number superseded by this part

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D6-330D-E, D6-370D-E, D6-370D-B, D6-330D-B, D6-330A-F, D6-370A-F, D6-330D-C, D6-370D-C, D6-330D-D, D6-370D-D, D6-330D-F, D6-370D-F, D6-300A-F, D6-300D-F, D6-300I-F, D6-310D-B, D6-310D-D, D6-310D-C, D6-310D-E, D6-330I-F, D6-370I-F, D6-435D-A, D6-435D-D, D6-435D-E, D6-435D-F, D6-400A-F, D6-435D-C, D6-435I-F
• Volvo Penta D4-260A-F, D4-260D-B, D4-260D-C, D4-260D-D, D4-260D-E, D4-260D-F, D4-260I-F, D4-300A-F, D4-300D-A, D4-300D-C, D4-300D-D, D4-300D-E, D4-300D-F, D4-180I-F, D4-225I-F, D4-300I-F, D4-225A-F
• Volvo Penta D13C1-A MP, D13C2-A MP, D13C3-A MP, D13C4-A MP, D13B-G MP, D13B-L MP, D13B-E MH, D13B-E MH (FE), D13B-K MP, D13B-N MH, D13B-N MH (FE), D13B-C MP, D13C6-A MP, D13C1-A MH, D13C2-A MH, D13C5-A MP
• Volvo Penta D9A2J, D9A2G, D9A2D, D9A2B, D9A2F, D9A2K, D9A2H, D9A2A, D9A2C, D9A2E
• Volvo Penta D11B3-A MP, D11B4-A MP, D11B2-A MP, D11B1-A MP
• Volvo Penta 8.1IPSCE-MF