21808530 Gasket Kit | Genuine Volvo Penta Part

🔧 Product Description

Volvo Penta lists this part as the gasket kit supplied inside its published overhaul kits. It appears in 3 of them: 877645 for TAD520VE (Tier 1); 3843579 for TAD520GE (Tier 2); 3842345 for TD520GE (Tier 1), TAD520GE (Tier 1).

🚤 Compatibility

• HP Range: Approximately 120-250 HP
• Year Range: Approximately 1990s-2000s

⚙️ Key Features

• Complete major-overhaul gasket package
• Includes the cylinder-head sealing group
• Covers lubrication, cooling, induction and exhaust joints
• For selected D5A, D7A, D7C, TAD5 and TAD7 engines
• Engine build must be confirmed because head-gasket specification can vary
• Engine type: Volvo Penta inline 4-cylinder and inline 6-cylinder diesel
• Listed by Volvo Penta as the gasket kit in its overhaul kits
• 1 off in overhaul kit 877645 (TAD520VE (Tier 1))
• 1 off in overhaul kit 3843579 (TAD520GE (Tier 2))
• 1 off in overhaul kit 3842345 (TD520GE (Tier 1), TAD520GE (Tier 1))
• Volvo Penta lists it as including inlet/exhaust, de-carbo and turbo connect gaskets plus additional gaskets
• Published gasket kit content: inlet/exhaust, de-carbo, turbo connect, additional gaskets
• Used in overhaul kits: 877645 x1 (TAD520VE (Tier 1)); 3843579 x1 (TAD520GE (Tier 2)); 3842345 x1 (TD520GE (Tier 1), TAD520GE (Tier 1))

📋 Kit Contents

• Complete engine gasket and seal assortment - serviced under Volvo Penta kit 21808530
• Cylinder-head gasket / sealing group - included within kit 21808530; the exact head-gasket number is engine-build dependent and is not separately stated in the public kit packing list
• Internal manifold, coolant, oil and ancillary gaskets - supplied within kit 21808530 and not individually numbered in the indexed package description

🔌 Function

The kit seals the major engine joints disturbed during a full overhaul, including the combustion joint between cylinder block and head.

⚠️ Common Signs of Failure

• Cylinder-head gasket leakage
• Coolant or oil mixing
• Compression leakage
• Major engine disassembly
• Multiple old gaskets are no longer serviceable

🛠️ Service Notes

• Check the kit contents against the joints you are actually opening before you start, and lay the parts out so nothing is left in the bag
• Renew every gasket in the kit as a set; a used gasket has already taken its crush and will not seal a second time
• Clean the mating faces properly without gouging them — a plastic or hardwood scraper and a solvent are safer than a steel blade, especially on aluminium
• Fit gaskets dry unless the workshop manual for your engine specifies a sealant, and then use only the sealant it names
• Tighten the joint evenly in the sequence and to the figures given in the manual for your engine, and re-check after the first heat cycle where the manual calls for it
• Volvo Penta's overhaul kits call for one of this part

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21808530 → Supersedes 21025445

OEM / Related Numbers

• 21025445 earlier number superseded by this part
• 21808529 - corresponding gasket package without the head-gasket group

📦 Condition

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