845879 Pressure Cap | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta pressure cap, listed as the filler cap where an extra expansion tank is fitted, weighing 0.057 kg and listed for 34 applications across the TMD, TAMD, AD, AQAD, D and MD series engines. Filler cap 845587 covers the same duty on a wider 75-application list, and pressure cap 844624 is the 30 kPa cap for installations without the extra tank, so check which arrangement your engine has.

🚤 Compatibility

• Engine Family: TMD, TAMD, AD, AQAD, D, MD

Full model list at the end of this description.

⚙️ Key Features

• For installations with an extra expansion tank
• 0.057 kg
• 34 applications across the TMD, TAMD, AD, AQAD, D and MD series
• Related to filler cap 845587 and the 30 kPa pressure cap 844624

🔌 Function

Seals the cooling system filler and holds the coolant under pressure, releasing through its valve when the set pressure is exceeded.

⚠️ Common Signs of Failure

• Coolant loss with no traceable external leak
• Coolant pushed out into the expansion tank when hot
• Sealing rubber perished, swollen or flattened
• Cap will not hold pressure on a tester
• Scale or corrosion on the filler neck seat

🛠️ Service Notes

• Establish whether an extra expansion tank is fitted before ordering — this cap, 845587 and 844624 are not interchangeable
• Never release a cap on a hot system, as escaping coolant will scald
• Renew the cap with each coolant change

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta AD41B, AD41A, AD41BJ
• Volvo Penta TAMD72A, TAMD72P-A, TAMD72WJ-A
• Volvo Penta TMD40A, TMD40B, TMD40C
• Volvo Penta AD31, AD31B
• Volvo Penta AQAD40B, AQAD40A
• Volvo Penta D41, D41B
• Volvo Penta TAMD31A, TAMD31B
• Volvo Penta TAMD40A, TAMD40B
• Volvo Penta TAMD41B, TAMD41A
• Volvo Penta TAMD71B, TAMD71A
• Volvo Penta TMD31A, TMD31B
• Volvo Penta TMD41A, TMD41B
• Volvo Penta AQAD30A
• Volvo Penta MD30A
• Volvo Penta MD31A
• Volvo Penta TAMD30A
• Volvo Penta TAMD61A
• Volvo Penta TAMD62A
• Volvo Penta TMD30A