991048 Hollow Screw | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta hollow screw for engines built with a heat exchanger, weighing 0.027 kg and listed for 60 applications across the D, TAD and TWD series. It consolidates five earlier numbers — 21316273, 3588673, 78467229, 20934267 and 25167 — into one current part.

🚤 Compatibility

• Engine Family: D, TAD, TWD
• HP Range: 145-480 HP

Full model list at the end of this description.

⚙️ Key Features

• For engines with a heat exchanger
• 0.027 kg
• 60 applications across the D, TAD and TWD series
• Replaces five earlier numbers: 21316273, 3588673, 78467229, 20934267 and 25167
• Quantity varies by assembly, most commonly one
• Also supersedes Volvo part numbers 20521582, 20776969, 20847004, 20847008, 20909744, 26017, 3825107, 3825833, 3836312, 6601756, 6602781, 6604945 and 865811

🔌 Function

Clamps a banjo fitting down onto its port while carrying fluid through drillings in its own shank.

⚠️ Common Signs of Failure

• Weeping or dripping at the banjo joint
• Thread stripped or pulled
• Sealing faces scored, or the sealing washers flattened and hard
• Cross-drillings blocked with debris or scale
• Head rounded off from over-tightening

🛠️ Service Notes

• Confirm the engine is the heat-exchanger build before ordering — that note is what separates this screw from the others in the group
• Renew the sealing washers each side of the banjo on refitting

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 991048 → Supersedes 21316273

OEM / Related Numbers

• 25167 earlier number superseded by this part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 D6-340I-G, D6-380I-G, D6-440I-G, D6-480I-G, D6-300A-G, D6-340A-G, D6-380A-G, D6-440I-WJ-G, D6-480I-WJ-G, D6-300D-G, D6-340D-G, D6-380D-G, D6-440D-G, D6-480D-G, D6-400A-G, D6-440A-G, D6-300I-G
• Volvo Penta D4-175I-G, D4-230I-G, D4-270I-G, D4-320I-G, D4-300I-G, D4-150A-G, D4-230A-G, D4-270A-G, D4-320A-G, D4-300A-G, D4-145I-G
• Volvo Penta D8A2-A MP, D8A5-A MH, D8A6-A MH, D8A5-A MG, D8A6-A MG, D8A4-A MP, D8A1-A MP, D8A3-A MP
• Volvo Penta D13C4-B MP, D13C5-B MP, D13C8-B MP
• Volvo Penta TAD1640-42GE-B, TAD1640VE-B, TAD1640-42VE-C
• Volvo Penta TAD1650VE-B/51VE, TAD1650GE
• Volvo Penta TWD1683GE-B, TWD1683VE
• Volvo Penta TAD1351-53VE
• Volvo Penta TAD1371-75VE
• Volvo Penta TAD1641VE-B
• Volvo Penta TAD1642VE-B
• Volvo Penta TAD1643VE-B
• Volvo Penta TAD1651GE
• Volvo Penta TAD1660-62VE
• Volvo Penta TAD1662VE EU5
• Volvo Penta TAD1670-72VE
• Volvo Penta TWD1644-45GE
• Volvo Penta TWD1652GE
• Volvo Penta TWD1653GE
• Volvo Penta TWD1682-83GE
• Volvo Penta TWD1744GE