946577 Lock Nut | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta lock nut weighing 0.045 kg and listed for 319 applications across the MD, TMD, AQ, TD, AD and TAMD series. It is a substantially larger fastener than the other lock nuts in this run, which are published at 0.007 to 0.041 kg.

🚤 Compatibility

• Engine Family: MD, TMD, AQ, TD, AD, TAMD, AQAD, D, TWD, TID, BB, MS, B, DP, SP, DPX, AQD, MB, KAD, KAMD
• HP Range: 13-75 HP

Full model list at the end of this description.

⚙️ Key Features

• 0.045 kg
• 319 applications across MD, TMD, AQ, TD, AD and TAMD series engines
• Quantity varies by assembly, most commonly two

🔌 Function

Locks onto a stud or screw and resists loosening under vibration.

⚠️ Common Signs of Failure

• Nut turning freely by hand — the locking feature has gone
• Joint found loose or the fastener backed out
• Flats rounded from repeated removal
• Thread galled or seized

🛠️ Service Notes

• Renew rather than reuse once the locking action is weak
• Check the stud or screw thread for pick-up before fitting a new nut

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 940092 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 2003, 2003R, 2003R SOLAS, 100S, 110S, 120S, 120S-B, 740B, 8.1GiI-A, 8.1GiI-B, 8.1GiI-C, 8.1GiI-D, 8.1GiI-E, 8.1GSiI-A, 8.1GXiI-A, 8.1GXiI-B, 8.1GXiI-C, 8.1GXiI-D, 500A, 501A, 501B, 570A, 572A, 740A, 5.7GSiI-A, 5.7GXiI-A, 5.7GXiI-B, 5.7GXiI-C, 5.7GXiI-D, 5.7GXiI-E, 5.7GXiI-F, 5.7GiI-A, 5.7GiI-B, 5.7GiI-C, 5.7GiI-D, 5.7GiI-E, 430A, 430B, 431A, 431B, 432A, 434A, 2003TB, 2003TB SOLAS, 230A, 230B, 250A, 250B, 280B, 290A, 290DP, 120SC, 120S-D, 120S-E, 2001AG, 2001B, 2001BG, 2001D, 2003D, 2003T, 2003TR, 2002AG, 2002B, 2002BG, 2002D, 2003B, 2003B SOLAS, 2003 SOLAS, 2001, 570, 500B, 500, 2002, 430, 2001R
• Volvo Penta TID121KG, TID121KGP, TID121KP, TID121KPB, TID121L, TID121LG, TID121LGP, TID121LP, TID121LPB, TID121FG, TID121K, TID121K-87
• Volvo Penta DP-C, DP-C1, DP-D, DP-D1, DP-A, DP-A1, DP-A2, DP-B, DP-B1
• Volvo Penta TD100G-85, TD100G, TD100GG, TD100GGP, TD100HP, TD100HPB, TD100GG-85, TD100GP, TD100GP-85
• Volvo Penta TID100KG, TID100KGP, TID100K, TID100K-87, TID100KGP-87, TID100KP, TID100KP-87, TID100KPB-87
• Volvo Penta TD61A, TD61ACE, TD61AG, TD61AGP, TD61AP, TD61APB, TD61AW
• Volvo Penta TD71A, TD71ACE, TD71AG, TD71AGP, TD71AP, TD71APB, TD71AW
• Volvo Penta MS2B-A, MS2B-L, MS2L-E, MS2B, MS2V, MS2A-E
• Volvo Penta TD121GGP-87, TD121G, TD121GG, TD121GGP, TD121GP, TD121GPB
• Volvo Penta AD31, AD31B, AD31D, AD31D-A, AD31XD
• Volvo Penta AD41P-B, AD41B, AD41, AD41A, AD41BJ
• Volvo Penta B230, B230E, B230F, B230FB, B230FX
• Volvo Penta D2-40F, D2-55F, D2-50F, D2-75F, D2-60F
• Volvo Penta SP-C, SP-A2, SP-C1, SP-A, SP-A1
• Volvo Penta AQ130C, AQ130D, AQ130A, AQ130B
• Volvo Penta AQ131A, AQ131B, AQ131C, AQ131D
• Volvo Penta BB225A, BB225AV, BB225B, BB225C
• Volvo Penta MD22, MD22A, MD22L, MD22P
• Volvo Penta TAMD31M, TAMD31A, TAMD31B, TAMD31D
• Volvo Penta TAMD41B, TAMD41D, TAMD41M-A, TAMD41A
• Volvo Penta TID71AG, TID71AGP, TID71AP, TID71APB
• Volvo Penta AQ151A, AQ151B, AQ151C
• Volvo Penta AQ170B, AQ170C, AQ170A
• Volvo Penta AQ225D, AQ225E, AQ225F
• Volvo Penta BB115A, BB115B, BB115C
• Volvo Penta BB170B, BB170C, BB170A
• Volvo Penta BB260AV, BB260B, BB260C
• Volvo Penta D1-30F, D1-13F, D1-20F
• Volvo Penta MB20A, MB20B, MB20C
• Volvo Penta MD100A, MD100B, MD100B-CC
• Volvo Penta MD5A, MD5B, MD5C
• Volvo Penta TMD22A, TMD22B, TMD22P-C
• Volvo Penta TMD31A, TMD31B, TMD31D
• Volvo Penta TMD40A, TMD40B, TMD40C
• Volvo Penta AQ115A, AQ115B
• Volvo Penta AQ125B, AQ125A
• Volvo Penta AQ145B, AQ145A
• Volvo Penta AQ260A, AQ260B
• Volvo Penta AQAD40B, AQAD40A
• Volvo Penta AQD21A, AQD21B
• Volvo Penta D41, D41B
• Volvo Penta MD11C, MD11D
• Volvo Penta MD17C, MD17D
• Volvo Penta MD21B, MD21A
• Volvo Penta MD6A, MD6B
• Volvo Penta MD7B, MD7A
• Volvo Penta MS3B, MS3C
• Volvo Penta MS4B, MS4A
• Volvo Penta MS5A, MS5B
• Volvo Penta TAMD120A, TAMD120B
• Volvo Penta TAMD40A, TAMD40B
• Volvo Penta TAMD71B, TAMD71A
• Volvo Penta TD120HP, TD120HPP
• Volvo Penta TD730ME, TD730VE
• Volvo Penta TID61AG, TID61AGP
• Volvo Penta TMD100A, TMD100C
• Volvo Penta TMD120A, TMD120B
• Volvo Penta TMD41A, TMD41B
• Volvo Penta AD40B
• Volvo Penta AQ120B
• Volvo Penta AQ140A
• Volvo Penta AQ165A
• Volvo Penta AQD40A
• Volvo Penta B20
• Volvo Penta BB140A
• Volvo Penta BB145A
• Volvo Penta BB165A
• Volvo Penta BB231A
• Volvo Penta BB261A
• Volvo Penta BB740A
• Volvo Penta D2002AG
• Volvo Penta D2003AG
• Volvo Penta DPX
• Volvo Penta KAD44P
• Volvo Penta KAMD44P-A
• Volvo Penta MD120A
• Volvo Penta MD2010
• Volvo Penta MD2020
• Volvo Penta MD2030
• Volvo Penta MD2040
• Volvo Penta MD30A
• Volvo Penta MD31A
• Volvo Penta MD40A
• Volvo Penta MD67C
• Volvo Penta MD70C
• Volvo Penta TAMD22P-B
• Volvo Penta TAMD30A
• Volvo Penta TAMD61A
• Volvo Penta TAMD62A
• Volvo Penta TAMD72P-A
• Volvo Penta TD31ACE
• Volvo Penta TD610M
• Volvo Penta TD630ME
• Volvo Penta TID120HPP
• Volvo Penta TMD30A
• Volvo Penta TMD70C
• Volvo Penta TWD1210P
• Volvo Penta TWD1211P