# 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 ## Details - **Price:** 1.08 AUD - **Vendor:** Volvo Penta - **Tags:** Volvo Penta ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 1.08 AUD | In stock | ## Images - 946577 Lock Nut | Genuine Volvo Penta Part --- > Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/946577-lock-nut-genuine-volvo-penta) > Updated: 2026-08-22