1581184 Round Nut/Starter Switch | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta round nut/starter switch is a structural fastening, locking or support component used in the starter-switch and instrument-panel mounting. It is manufactured to the original Volvo Penta dimensions and interface requirements so the assembly retains its designed clamp load, support and alignment. In service, it secures the starter switch through the instrument panel at the correct clamping depth. Fitment is controlled by the exact engine or product configuration and serialised parts list; confirm OEM number 1581184 against the installed assembly before ordering.

🚤 Compatibility

• Engine Family: TD, MD, TMD, AD, TAMD, AQAD, TID, AQD, BB

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 1581184
• System group: Other Electrical Equipment
• Round nut for starter switch mounting
• Net weight 0.018 kg (18 g)
• Fits 2001, 2002 and 2003 series, MD, TMD, TAMD and AD/AQAD 30/31/40/41 series, and TD/TID 60, 70, 100, 120, 121, 122 and 162 series marine and industrial engines

🔌 Function

The round nut threads onto the barrel of the starter switch to clamp it securely to the instrument panel or mounting bracket. It maintains correct switch alignment and prevents the switch rotating or working loose when the key is turned.

⚠️ Common Signs of Failure

• Starter switch turning or rotating in the panel when the key is operated
• Corrosion or salt build-up seizing the nut on the switch thread
• Stripped or cross-threaded nut that will no longer tighten
• Loose switch causing intermittent starting or electrical contact
• Cracked or distorted nut that no longer clamps the switch square to the panel

🛠️ Service Notes

• This exact round nut is listed across a very wide span of engines — from the petrol 2001-2003 series through the diesel MD/TMD/AD/TAMD/AQAD 30-41 range to the TD/TID 60-162 series — so the same nut has secured panel-mounted starter switches across several engine generations; check thread engagement rather than assuming a size change between an older and a newer engine
• Tighten only enough to hold the switch square and steady in the panel — overtightening a thin barrel-mounted nut like this can crack the switch body or distort the panel cut-out

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 2003, 2003R, 2003R SOLAS, 740A, 2003TB, 2001B, 2001D, 2003D, 2003T, 2003TR, 2002B, 2002D, 2003B, 2003B SOLAS, 2003 SOLAS, 2001, 2002, 2001R
• Volvo Penta TID121KG, TID121KGP, TID121KP, TID121KPB, TID121L, TID121LG, TID121LGP, TID121LP, TID121LPB, TID121FG, TID121K, TID121K-87
• 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 TAMD122A, TAMD122A/C, TAMD122D, TAMD122P-A, TAMD122P-B, TAMD122P-C
• Volvo Penta TD121GGP-87, TD121G, TD121GG, TD121GGP, TD121GP, TD121GPB
• Volvo Penta TD70G, TD70G-83, TD70GG, TD70GG-83, TD70GPP, TD70GPP-83
• Volvo Penta TD71ACE, TD71AG, TD71AGP, TD71AP, TD71APB, TD71AW
• Volvo Penta TD60D-83, TD60D, TD60G, TD60DG-83
• Volvo Penta TID162AG, TID162AGP, TID162AP, TID162APB
• Volvo Penta TID71AG, TID71AGP, TID71AP, TID71APB
• Volvo Penta TID70G, TID70GG, TID70GPP
• Volvo Penta TMD40A, TMD40B, TMD40C
• Volvo Penta AD31, AD31B
• Volvo Penta AQAD40B, AQAD40A
• Volvo Penta TAMD31A, TAMD31B
• Volvo Penta TAMD40A, TAMD40B
• Volvo Penta TAMD41B, TAMD41A
• Volvo Penta TAMD70E, TAMD70D
• Volvo Penta TAMD71B, TAMD71A
• Volvo Penta TD120HP, TD120HPP
• Volvo Penta TID60DG, TID60D
• Volvo Penta TID61AG, TID61AGP
• Volvo Penta TMD31A, TMD31B
• Volvo Penta AD30A
• Volvo Penta AD40B
• Volvo Penta AD41A
• Volvo Penta AQAD30A
• Volvo Penta AQD40A
• Volvo Penta AQD70D
• Volvo Penta BB740A
• Volvo Penta MD22A
• Volvo Penta MD30A
• Volvo Penta MD31A
• Volvo Penta MD40A
• Volvo Penta TAMD121D
• Volvo Penta TAMD30A
• Volvo Penta TAMD60C
• Volvo Penta TAMD61A
• Volvo Penta TAMD62A
• Volvo Penta TAMD72A
• Volvo Penta TID120HPP
• Volvo Penta TMD100C
• Volvo Penta TMD120B
• Volvo Penta TMD121C
• Volvo Penta TMD122A
• Volvo Penta TMD30A
• Volvo Penta TMD41A