21026496 Cylinder Head | Genuine Volvo Penta Part

🔧 Product Description

Brand-new genuine Volvo Penta cylinder head for use in the Volvo Penta TAD420VE cylinder-head and valvetrain assembly. The machined casting forms the combustion-chamber roof and houses the valve, injector, coolant and lubrication passages required by the engine.

🚤 Compatibility

Typically suits:

• Volvo Penta TD420VE
• Volvo Penta TAD420VE

• Engine Family: TD, TAD
• Serial Range: SN10155364-

⚙️ Key Features

• Genuine precision-machined cylinder-head reference
• Correct combustion, valve and injector geometry
• Integrated coolant and oil passages
• Matched to the specified engine family and serial range
• Head gasket, bolts, injectors and external installation parts are separate unless listed
• Engine type: Volvo Penta four-cylinder industrial diesel

🔌 Function

Seals the top of the cylinders, supports the valvetrain and injectors, and routes intake, exhaust, coolant and lubricating oil through the upper engine.

⚠️ Common Signs of Failure

• Coolant pressurisation or unexplained coolant loss
• Low compression, misfire or difficult starting
• Cracks around valve seats, injector bores or water passages
• Repeated head-gasket failure or overheating

🛠️ Service Notes

• Check the head for cracks and check the head and block faces for flatness with a straight edge before assembly, and have any doubt about the face or the valve seats resolved before the gasket goes on
• Clean the gasket faces with care and without scoring them — do not attack an aluminium face with abrasive discs or scrapers, and keep debris out of the bores, coolant passages and bolt holes
• Always use a new head gasket, and tighten in the stages, sequence and torque-plus-angle steps given in the workshop manual for your engine, with the threads and mating faces clean and lubricated exactly as that manual specifies
• Head bolts on modern engines are angle-tightened and stretch permanently, so renew them wherever the manual calls for it rather than reusing them
• Refill and bleed the cooling system properly, then run the engine and carry out any retightening or valve clearance recheck the manual requires after the first running period

🔄 Supersession & Cross Reference

OEM / Related Numbers

• Inlet valve 21026535
• Exhaust valve 21026536
• Cylinder-head gaskets 20570520 / 20882841 / 20882839 / 20570522 / 20882838

Other-Brand OEM Numbers

• VOE21026496

OEM Reman Alternatives

• Exchange/remanufactured head 3801232

📦 Condition

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