979231 Flange Nut | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta flange nut weighing 0.044 kg and listed for 49 applications across the TAD, TWD, D, DH and MD series. No thread size is published for it - unlike the M10 flange nut 981152 in this run - so match it to the old fastener or order against the engine.

🚤 Compatibility

• Engine Family: TAD, TWD, D, DH, MD

Full model list at the end of this description.

⚙️ Key Features

• 0.044 kg
• Listed for 49 applications across five engine series
• Thread size is not published - order by part number
• Flange nuts 981124 and the M10 981152 are the others listed here
• Quantity varies by assembly, most commonly 8

🔌 Function

Clamps a joint with an integral flange that spreads the load over a wider area, doing away with a separate washer.

⚠️ Common Signs of Failure

• Fastener backing off and the joint working loose
• Flange face scored or dished where the nut has spun under load
• Thread stripped, stretched or picked up when the nut is removed
• Nut seized to the component by corrosion under the flange

🛠️ Service Notes

• Clean the mating face before fitting - the flange only spreads its load properly on a flat, clean surface
• Renew rather than reuse where the nut carries a locking feature

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D5A-B TA, D5A-T, D5A-TA
• Volvo Penta D7A-B TA, D7A-T, D7A-TA
• Volvo Penta TAD1241GE, TAD1241VE, TAD1241-42VE
• Volvo Penta TAD1641VE-B, TAD1641GE, TAD1641VE
• Volvo Penta TAD1642VE-B, TAD1642GE, TAD1642VE
• Volvo Penta MD2010, MD2010B
• Volvo Penta TAD1242GE, TAD1242VE
• Volvo Penta TAD1250VE, TAD1250-52VE
• Volvo Penta TAD1640GE, TAD1640VE-B
• Volvo Penta TAD1650VE-B/51VE, TAD1650GE
• Volvo Penta DH10A
• Volvo Penta TAD1140-42VE
• Volvo Penta TAD1150-52VE
• Volvo Penta TAD1170-72VE
• Volvo Penta TAD1240GE
• Volvo Penta TAD1251VE
• Volvo Penta TAD1252VE
• Volvo Penta TAD1643VE
• Volvo Penta TAD1651GE
• Volvo Penta TAD1660-62VE
• Volvo Penta TAD1662VE EU5
• Volvo Penta TAD1670-72VE
• Volvo Penta TAD940VE
• Volvo Penta TAD941VE
• Volvo Penta TAD942VE
• Volvo Penta TAD943VE
• Volvo Penta TAD950VE
• Volvo Penta TAD951VE
• Volvo Penta TAD952VE
• Volvo Penta TWD1240VE
• Volvo Penta TWD1643GE
• Volvo Penta TWD1652GE
• Volvo Penta TWD1653GE
• Volvo Penta TWD1663GE