990948 Flange Lock Nut | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta flange lock nut weighing 0.045 kg and listed for 86 applications across the D and V ranges. It supersedes part number 949874.

🚤 Compatibility

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

Full model list at the end of this description.

⚙️ Key Features

• 0.045 kg
• 86 applications across the D and V ranges
• Supersedes 949874
• Flange and locking feature in one nut
• Quantity varies by assembly, most commonly four
• Also supersedes Volvo part numbers 4776940 and 4804283

🔌 Function

Combines a load-spreading flange with a locking feature, so the nut both seats squarely and resists working loose under vibration.

⚠️ Common Signs of Failure

• Nut found loose or missing
• Nut spinning freely down the thread by hand, showing the locking action has gone
• Flange face flattened
• Thread stripped or crossed on removal

🛠️ Service Notes

• Treat it as single use - once the locking feature has been pulled up and released it will not hold to the same figure again
• Never substitute a plain nut and washer for a flange lock nut on a joint that specifies one

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 990948 → Supersedes 949874 → Supersedes 4952322

OEM / Related Numbers

• 949874 earlier number superseded by this part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 D13C3-B MH, D13C1-B MH, D13C4-B MH, D13B-E MG, D13B-F MG, D13B-N MH, D13C6-A MP, D13C1-A MH, D13C2-A MH, D13C4-B MP, D13C5-B MP, D13C1-B MG, D13C3-B MG, D13C2-B MG, D13C4-B MG, D13C5-A MP, D13C2-A MG, D13C1-A MG, D13C8-B MP
• 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, D6-480A-G
• Volvo Penta V8-350-C-R, V8-350-CE-R, V8-300-C-R, V8-300-CE-R, V8-300-C-P, V8-300-CE-P, V8-350-C-P, V8-350-CE-P, V8-380-C-P, V8-380-CE-P, V8-430-C-P, V8-430-CE-P, V8-300-C-S, V8-300-CE-S, V8-350-C-S, V8-350-CE-S, V8-400-CE-R
• 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 MG, D16C1-F MG, D16C2-E MG, D16C2-F MG, D16C1-E MH, D16C1-F MH, D16C2-E MH, D16C2-F MH
• Volvo Penta D8A5-A MH, D8A6-A MH, D8A5-A MG, D8A6-A MG, D8A4-A MP, D8A3-A MP, D8A7-A MP, D8A8-A MP
• Volvo Penta V6-200-CE-P, V6-250-CE-P, V6-280-CE-P, V6-250-CE-R, V6-280-CE-R
• Volvo Penta D11C3-A MP, D11C4-A MP