20799762 Cylinder Head | Genuine Volvo Penta Part

🔧 Product Description

Complete common-rail cylinder head for TAD550/TAD750 engines, with Volvo Penta exchange cylinder head 3803975 listed as the service alternative.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD750GE
• Volvo Penta TAD751GE
• Volvo Penta TAD750VE
• Volvo Penta TAD760VE

• Engine Family: TAD
• HP Range: Approximately 300 HP
• Year Range: Approximately 2000s-2010s

⚙️ Key Features

• OEM-machined combustion, valve and injector interfaces
• Supports the original valves, seats, guides, injector and coolant/oil passages
• Available with a Volvo Penta exchange service alternative where listed
• Requires the correct graded head gasket and tightening procedure
• All mating surfaces and reusable valve components must be inspected during installation
• Engine type: 5.7 L and 7 L common-rail diesel

🔌 Function

Seals the top of the cylinders and carries the valves, injector, upper valve mechanism and internal coolant/oil passages required for combustion.

⚠️ Common Signs of Failure

• Low compression, hard starting or persistent cylinder misfire
• Coolant or oil leakage at the head joint
• Cracked casting, damaged valve seats or injector bore
• Recurring overheating or cylinder-head-gasket failure

🛠️ 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 Supersession Chain

• 3803975 (Volvo Penta exchange/remanufactured cylinder head)

OEM / Related Numbers

• 20799722 cylinder-head cap plug
• 20459962; 20580079; 20580080 inlet valve-seat references
• 20845144; 20580082; 20580083 exhaust valve-seat references
• 20412733 cap plug
• 20405897 valve guide
• 20798699 inlet valve
• 20798533 exhaust valve
• 20459855 valve-stem seal
• 20459851 valve spring
• 20840747 spring disc
• 20459857 valve cotter
• 20840807 thrust washer
• 20850047; 20850048; 20850049 graded cylinder-head gaskets

Aftermarket / Verified Equivalents

• SRP: CH-99762

📦 Condition

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