{"product_id":"20798183-cylinder-head-gasket-genuine-volvo-penta","title":"20798183 Cylinder Head Gasket | Genuine Volvo Penta Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n OEM sealing component used in the graded multi-layer-steel cylinder-head sealing system. It restores the specified fluid-, air- or gas-tight interface when the adjoining parts are serviced. Application note: One-hole thickness grade. Select only after measuring piston protrusion and following the Volvo Penta workshop table.\n\u003c\/p\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Volvo Penta TAD620VE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD660VE\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   Engine Family:\n  \u003c\/strong\u003e\n  TAD\n \u003c\/li\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   HP Range:\n  \u003c\/strong\u003e\n  Approximately 260 HP\n \u003c\/li\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   Year Range:\n  \u003c\/strong\u003e\n  Approximately late 1990s-2010s\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Multi-layer-steel construction for high cylinder pressure\n \u003c\/li\u003e\n \u003cli\u003e\n  Graded thickness identified by holes or dots\n \u003c\/li\u003e\n \u003cli\u003e\n  Seals combustion, coolant and lubricating-oil passages\n \u003c\/li\u003e\n \u003cli\u003e\n  Must be selected from measured piston protrusion\n \u003c\/li\u003e\n \u003cli\u003e\n  Cylinder-head and block surfaces must be checked before installation\n \u003c\/li\u003e\n \u003cli\u003e\n  Engine type: Four- and six-cylinder turbocharged\/common-rail diesel\n \u003c\/li\u003e\n \u003cli\u003e\n  TH=1.25mm \/ TH=1.26mm (Volvo assembly listing)\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n Seals the joint between cylinder head and block, containing combustion pressure in each bore while keeping the coolant and lubricating-oil passages separate from each other and from the outside of the engine.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Coolant loss, overheating or repeated cooling-system pressurisation\n \u003c\/li\u003e\n \u003cli\u003e\n  Low compression, hard starting or cylinder misfire\n \u003c\/li\u003e\n \u003cli\u003e\n  External leakage at the cylinder-head joint\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🛠️ Service Notes\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  This is the one-hole grade, listed at 1.26 mm thick; the two-hole 20798186 and the three-hole 20798191 are the thicker grades in the same family, so count the identification holes on the gasket you remove and confirm the choice against measured piston protrusion\n \u003c\/li\u003e\n \u003cli\u003e\n  It replaces the earlier 20795927 in this grade\n \u003c\/li\u003e\n \u003cli\u003e\n  Check the head and block faces for flatness and cleanliness before fitting - a graded gasket cannot compensate for a distorted or damaged face\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM Supersession Chain\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  20798183 → Supersedes 20795927 → Supersedes 24426690 → Supersedes 20522328 → Supersedes 20459843\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  20795927 earlier number superseded by this part\n \u003c\/li\u003e\n \u003cli\u003e\n  24426690 earlier number superseded by this part\n \u003c\/li\u003e\n \u003cli\u003e\n  20522328 earlier number superseded by this part\n \u003c\/li\u003e\n \u003cli\u003e\n  20459843 earlier number superseded by this part\n \u003c\/li\u003e\n \u003cli\u003e\n  21055823 cylinder head\n \u003c\/li\u003e\n \u003cli\u003e\n  20459855 valve-stem seal\n \u003c\/li\u003e\n \u003cli\u003e\n  20459851 valve spring\n \u003c\/li\u003e\n \u003cli\u003e\n  20840747 spring disc\n \u003c\/li\u003e\n \u003cli\u003e\n  20459857 valve cotter\n \u003c\/li\u003e\n \u003cli\u003e\n  20840772 lock ring\n \u003c\/li\u003e\n \u003cli\u003e\n  20840807 thrust washer\n \u003c\/li\u003e\n \u003cli\u003e\n  20459852 valve seat\n \u003c\/li\u003e\n \u003cli\u003e\n  21026535 inlet valve\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n OEM Reman Alternatives\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  3801233 exchange cylinder head\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine Volvo Penta part\n \u003c\/li\u003e\n \u003cli\u003e\n  Brand new\n \u003c\/li\u003e\n \u003cli\u003e\n  Supplied in original or equivalent packaging\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Volvo Penta","offers":[{"title":"Default Title","offer_id":53379839426852,"sku":"841963D","price":504.75,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_79e3d61a-d011-4098-b6c9-cf95934f840c.png?v=1788055601","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/20798183-cylinder-head-gasket-genuine-volvo-penta","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}