859656 Exhaust Valve | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta exhaust valve from the Engine group, weighing 0.073 kg and listed for 9 applications across the TMD, MS, TAMD and MD series. Inlet valve 859650 is the matching item on the same 9 applications — the two are separate parts and must not be swapped.

🚤 Compatibility

Typically suits:

• Volvo Penta TMD22A
• Volvo Penta TMD22B
• Volvo Penta TMD22P-C
• Volvo Penta MS2B-A
• Volvo Penta TAMD22P-B
• Volvo Penta MD22
• Volvo Penta MD22A
• Volvo Penta MD22L
• Volvo Penta MD22P

• Engine Family: TMD, MS, TAMD, MD

⚙️ Key Features

• Exhaust valve, not the inlet valve
• 0.073 kg
• 9 applications across the TMD, MS, TAMD and MD series
• Inlet valve 859650 is the companion item

🔌 Function

Opens to release the burnt gas into the exhaust port and seals against its seat for the rest of the cycle, running far hotter than the inlet valve as it does so.

⚠️ Common Signs of Failure

• Low compression and a puffing or chuffing note at the exhaust
• Hard starting with rough running until warm
• Valve clearances closing up between services
• Seat face burnt, pitted or blowing black witness marks on strip-down
• Stem worn or the head tuliped from running hot

🛠️ Service Notes

• A burnt exhaust valve is usually a symptom — check injection and the valve clearance before fitting a new one
• Guide 859658 and sealing rings 859659 and 859660 are listed in this run and are worth renewing at the same time

📦 Condition

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