990966 Hexagon Nut | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta hexagon nut listed for 25 D-series applications. It supersedes part number 955780.

🚤 Compatibility

• Engine Family: D
• HP Range: 175-480 HP

Full model list at the end of this description.

⚙️ Key Features

• 25 D-series applications
• Supersedes 955780

🔌 Function

Clamps a threaded joint through a plain six-sided nut tightened onto a stud or bolt.

⚠️ Common Signs of Failure

• Nut found loose at service
• Flats rounded by a slipping spanner
• Thread stripped or crossed
• Corrosion seizing the nut onto its stud

🛠️ Service Notes

• A plain hexagon nut relies on the washer or locking arrangement specified for the joint - fit whatever was used originally rather than leaving it out
• No weight is published here, so order by part number against the application rather than by comparison with the other hexagon nuts in this run

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 990966 → Supersedes 955780 → Supersedes 151233

OEM / Related Numbers

• 955780 earlier number superseded by this part
• 10432 earlier number superseded by this part
• 10455 earlier number superseded by this part
• 20460444 earlier number superseded by this part
• 151223 earlier number superseded by this part
• 20459037 earlier number superseded by this part
• 241106 earlier number superseded by this part
• 3552599 earlier number superseded by this part
• 3852518 earlier number superseded by this part
• 906546 earlier number superseded by this part
• 906574 earlier number superseded by this part
• 947414 earlier number superseded by this part
• 955788 earlier number superseded by this part
• 151233 earlier number superseded by this part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, D6-480I-WJ-G, D6-400A-G, D6-300I-G
• Volvo Penta D4-175I-G, D4-230I-G, D4-270I-G, D4-320I-G, D4-300I-G, D4-230A-G, D4-270A-G, D4-320A-G, D4-300A-G
• Volvo Penta D16C1-E MH, D16C1-F MH, D16C2-E MH, D16C2-F MH
• Volvo Penta D8A5-A MH, D8A6-A MH