990940 Flange Nut | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta flange nut weighing 0.007 kg and listed for 122 applications across the D, V, TAD, TWD, TADH and BOX ranges. It consolidates four earlier part numbers - 20501349, 22583885, 861581 and 945408 - which were catalogued as hexagon nuts and nuts.

🚤 Compatibility

• Engine Family: D, V, TAD, TWD, TADH, BOX
• HP Range: 13-480 HP

Full model list at the end of this description.

⚙️ Key Features

• 0.007 kg
• 122 applications across six ranges
• Replaces 20501349, 22583885, 861581 and 945408
• Integral flange face
• Quantity varies by assembly, most commonly one
• Also supersedes Volvo part numbers 20460387, 20805465, 3802147, 3802148, 3803078, 3853714, 3887499, 422184, 422186, 422461, 424130, 467471, 468844, 8149261, 829527, 840741, 859387, 859784, 968862 and 976431

🔌 Function

Locks a stud or bolt with an integral flange that spreads the clamping load over the joint face.

⚠️ Common Signs of Failure

• Nut backing off and the joint moving
• Flange face or serrations flattened
• Thread stripped or pulled
• Corrosion locking the nut onto its stud

🛠️ Service Notes

• Four earlier numbers now come through as this one nut, so a parts list quoting any of 20501349, 22583885, 861581 or 945408 points here
• The numbers it replaces were catalogued as plain hexagon nuts, so check whether a separate washer was used with the original

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 990940 → Supersedes 20501349 → Supersedes 20405821

OEM / Related Numbers

• 945408 earlier number superseded by this part
• 20501349 earlier number superseded by this part
• 977246 earlier number superseded by this part
• 20405821 earlier number superseded by this part
• 20405733 referenced in the part notes

📦 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, D13C2-B MP, D13B-L MP, D13B-E MG, D13B-E MH, D13B-E MH (FE), D13B-F MG, D13B-F MG (FE), D13B-N MH, D13B-D MP, D13B-M MP, D13B-C MP, D13C4-B MP, D13C5-B MP, D13C6-A MP, D13C1-A MH, D13C2-A MH, D13C1-B MG, D13C3-B MG, D13C2-B MG, D13C4-B MG, D13C5-A MP, D13C2-A MG, D13C1-A MG, D13C7-B MP, D13C8-B MP, D13C9-A 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 V6-200-N, V6-240-M, V6-280-M, V6-240-N, V6-280-N, V6-200-P, V6-250-P, V6-280-P, V6-200-M, V6-250-O, V6-200-R, V6-250-R, V6-280-R
• 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, D4-175 VG
• 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, D8A7-A MP, D8A8-A MP
• Volvo Penta D1-30, D1-30B, D1-30F, D1-13B, D1-13F, D1-20, D1-20B, D1-20F
• 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 D2-40, D2-40B, D2-40F
• Volvo Penta D5A-B TA, D5A-T, D5A-TA
• Volvo Penta D7A-B TA, D7A-T, D7A-TA
• Volvo Penta D11C3-A MP, D11C4-A MP
• Volvo Penta TAD570-72VE, TAD570-71VE-B
• Volvo Penta TAD880-82GE, TAD880-84VE
• Volvo Penta TADH880-82GE, TADH880-84VE
• Volvo Penta BOX
• Volvo Penta PCC
• Volvo Penta TAD1180-83VE
• Volvo Penta TAD580-83VE
• Volvo Penta TAD852VE-B
• Volvo Penta TAD870-73VE
• Volvo Penta TWD1683VE
• Volvo Penta TWD1744GE