21528644 Exhaust Valve | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Exhaust Valve - Part Number: 21528644

Heat-resistant cylinder-head exhaust valve for Volvo Penta D5/D8 industrial and D8 marine engines. It opens to release combustion gas into the exhaust manifold and closes against the matching exhaust-valve seat to retain compression. Correct valve stem, face and seat contact are essential in high-temperature turbocharged service.

⚙️ Key Features

• Genuine Volvo Penta exhaust valve

• Heat-resistant valve material for turbocharged diesel service

• Used with the matching valve seat and valve-stem seal arrangement

• Precision stem and face geometry

• Suitable for marine, generator and industrial D8-family cylinder heads

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21528644 (current OEM service number)

OEM / Related Numbers:

• VOE21528644

• VOL-21528644

• Common associated valve-stem seal: 21990221

• Associated spring: 21757071

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta D5/D8 industrial and D8 marine cylinder heads

Typically suits:

• Engine models / systems:

• TAD540VE

• TAD541VE

• TAD542VE

• TAD550VE

• TAD551VE

• TAD552VE

• TAD570VE

• TAD571VE-B

• TAD572VE

• TAD580VE

• TAD581VE

• TAD582VE

• TAD583VE

• TAD840VE

• TAD841VE

• TAD842VE

• TAD843VE

• TAD840GE

• TAD841GE

• TAD842GE

• TAD843GE

• TAD850VE

• TAD851VE

• TAD852VE

• TAD851GE

• TAD852GE

• TAD853GE

• TAD853VE

• TAD870VE

• TAD871VE

• TAD872VE

• TAD873VE

• TAD880GE

• TAD881GE

• TAD882GE

• TAD880VE

• TAD881VE

• TAD882VE

• TAD883VE

• TAD884VE

• D8A1-A MP

• D8A2-A MP

• D8A3-A MP

• D8A4-A MP

• D8A5-A MH

• D8A6-A MH

• D8A5-A MG

• D8A6-A MG

• Engine Type: Inline-six turbocharged diesel

• Fitment Note: Confirm cylinder-head casting, valve-seat version and engine serial number

🔌 Function

Controls the exhaust-gas outlet from each cylinder and seals the combustion chamber during compression and power strokes.

Common signs replacement may be required:

• Low compression or difficult starting

• Misfire or rough running

• Exhaust valve leakage or burnt valve face

• Excessive valve clearance or stem wear

• High exhaust temperature and reduced power

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging