{"product_id":"20970720-cylinder-head-gasket-genuine-volvo-penta","title":"20970720 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 tad550\/tad551 graded multi-layer-steel cylinder-head sealing system. It restores the intended fluid-, air- or gas-tight interface when the adjoining parts are serviced. Application note: Two-dot grade, documented nominal thickness approximately 1.53 mm. Select only after measuring piston protrusion.\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 TAD550GE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD551GE\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 220 HP\n \u003c\/li\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   Year Range:\n  \u003c\/strong\u003e\n  Approximately 2000s-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  1.53 mm thick\n \u003c\/li\u003e\n \u003cli\u003e\n  Marked with two dots\n \u003c\/li\u003e\n \u003cli\u003e\n  Supersedes 20970717\n \u003c\/li\u003e\n \u003cli\u003e\n  0.649 kg\n \u003c\/li\u003e\n \u003cli\u003e\n  Two TAD-series applications\n \u003c\/li\u003e\n \u003cli\u003e\n  TH=1.53mm (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 cylinder head to the block, containing combustion pressure in each bore and keeping the coolant and oil galleries separate across the joint.\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 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  Two dots is the thinner of this pair - 20970725 is the three-dot grade at 1.63 mm\n \u003c\/li\u003e\n \u003cli\u003e\n  Measure piston protrusion and select the grade from that measurement rather than matching the gasket that came out\n \u003c\/li\u003e\n \u003cli\u003e\n  Supersedes 20970717 - order under the current number\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  20970720 → Supersedes 20970717\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  20970717 earlier number superseded by this part\n \u003c\/li\u003e\n \u003cli\u003e\n  20970527 cylinder head\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Other-Brand OEM Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Elring: 154.410\n \u003c\/li\u003e\n \u003cli\u003e\n  Victor Reinz: 61-43165-00\n \u003c\/li\u003e\n \u003cli\u003e\n  Glaser: H40678-00\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Aftermarket \/ Verified Equivalents\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Olsson Parts: 48147 - approximately 1.5 mm two-hole gasket\n \u003c\/li\u003e\n \u003cli\u003e\n  MEC-Diesel: MEC871505\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":53385397240100,"sku":"X127499","price":362.53,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_5fd23110-3c42-470a-ae2d-eb0bc26ac2ee.jpg?v=1788059468","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/20970720-cylinder-head-gasket-genuine-volvo-penta","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}