833927 Thermo Monitor | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta thermo monitor set to 93 degrees C, from the Instruments group, weighing 0.064 kg and listed for 66 applications across MD, TMD, AD, AQAD, D and TAMD series engines. It supersedes part number 840077. The 93 degrees C rating is the ordering detail - a switch of a different rating will alarm at the wrong point.

🚤 Compatibility

• Engine Family: MD, TMD, AD, AQAD, D, TAMD, DP, DPX, SP, AQD, KAD, KAMD

Full model list at the end of this description.

⚙️ Key Features

• 93 degrees C set point
• 0.064 kg
• Supersedes 840077
• 66 applications across MD, TMD, AD, AQAD, D and TAMD series engines

🔌 Function

Closes an alarm circuit when coolant temperature reaches its set point, warning the operator of overheating.

⚠️ Common Signs of Failure

• Overheat alarm sounding with the gauge reading normal
• No alarm at all when the engine genuinely overheats
• Alarm cutting in and out as the engine warms
• Corroded or damp terminal at the switch body
• Coolant weeping from the switch thread

🛠️ Service Notes

• This is an alarm device - test it after fitting rather than assuming it works, because a silent failure is only found when the engine is already hot
• Renew the sealing washer on the thread and check the earth path
• Confirm the set point needed for your installation before ordering

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 833927 → Supersedes 840077

OEM / Related Numbers

• 840077 earlier number superseded by this part

📦 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, 290A, 2001B, 2001D, 2003D, 2003T, 2003TR, 2002B, 2002D, 2003B, 2003B SOLAS, 2003 SOLAS, 2001, 2002, 2001R
• Volvo Penta AD41P-B, AD41B, AD41, AD41A, AD41BJ
• Volvo Penta DP-A, DP-A1, DP-B, DP-B1
• Volvo Penta MD5A, MD5B, MD5C
• Volvo Penta TAMD41B, TAMD41M-A, TAMD41A
• Volvo Penta TMD40A, TMD40B, TMD40C
• Volvo Penta AD31, AD31B
• Volvo Penta AQAD40B, AQAD40A
• Volvo Penta D41, D41B
• Volvo Penta MD7B, MD7A
• Volvo Penta SP-A, SP-A1
• Volvo Penta TAMD31A, TAMD31B
• Volvo Penta TAMD40A, TAMD40B
• Volvo Penta TMD31A, TMD31B
• Volvo Penta TMD41A, TMD41B
• Volvo Penta AQAD30A
• Volvo Penta AQD40A
• Volvo Penta DPX
• Volvo Penta KAD42A
• Volvo Penta KAMD42A
• Volvo Penta MD30A
• Volvo Penta MD31A
• Volvo Penta MD40A
• Volvo Penta MD6B
• Volvo Penta TAMD30A
• Volvo Penta TMD30A