{"product_id":"21412527-piston-genuine-volvo-penta","title":"21412527 Piston | Genuine Volvo Penta Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n Precision hydraulic piston used inside the trim-cylinder top-end assembly of the Volvo Penta DPI-A sterndrive. It converts hydraulic pressure into linear movement and works with the specified seals, rod and cylinder components to raise, lower and hold the drive angle.\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 D6-300A-G\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D6-340A-G\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D6-380A-G\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta DPI-A\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D6-400A-G\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D6-440A-G\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D4-150A-G\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D4-230A-G\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D4-270A-G\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D4-320A-G\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D4-300A-G\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  D, DPI\n \u003c\/li\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   HP Range:\n  \u003c\/strong\u003e\n  150-440 HP\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  Genuine Volvo Penta DPI-A hydraulic piston\n \u003c\/li\u003e\n \u003cli\u003e\n  Internal component of the trim-cylinder top-end assembly\n \u003c\/li\u003e\n \u003cli\u003e\n  Precision surface for hydraulic sealing and controlled movement\n \u003c\/li\u003e\n \u003cli\u003e\n  Must be installed with correct seals and clean hydraulic fluid\n \u003c\/li\u003e\n \u003cli\u003e\n  Drive product number and cylinder version control fitment\n \u003c\/li\u003e\n \u003cli\u003e\n  Engine type: Volvo Penta DPI hydraulic sterndrive system\n \u003c\/li\u003e\n \u003cli\u003e\n  2 used per assembly\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n Separates the pressure chambers inside the trim cylinder and transfers hydraulic force to the piston rod to position the sterndrive.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Drive drifts down or will not hold trim position\n \u003c\/li\u003e\n \u003cli\u003e\n  Hydraulic bypass or slow movement\n \u003c\/li\u003e\n \u003cli\u003e\n  Scored piston surface or damaged seal lands\n \u003c\/li\u003e\n \u003cli\u003e\n  Contaminated oil and internal cylinder wear\n \u003c\/li\u003e\n \u003cli\u003e\n  Uneven or jerky trim-cylinder operation\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  Measure the bore or liner and check it against the piston, using the size and class markings and the tolerances given in the workshop manual for your engine; pistons and bores are matched, and a worn bore needs attention before a new piston goes in\n \u003c\/li\u003e\n \u003cli\u003e\n  Fit rings with the marked face up and the gaps staggered as the manual specifies, use a proper ring compressor, and oil the piston, rings and bore before entering them\n \u003c\/li\u003e\n \u003cli\u003e\n  Observe the orientation markings on the piston and the pairing marks between piston and connecting rod so each assembly goes back in its own cylinder the right way round\n \u003c\/li\u003e\n \u003cli\u003e\n  Use new pin retaining clips or circlips, check the pin fit and the rod bearing shells, and confirm the piston moves freely on the pin as the manual describes\n \u003c\/li\u003e\n \u003cli\u003e\n  Where the manual calls for a piston protrusion or crown height check to select the gasket, carry it out before final assembly; then turn the engine over by hand to confirm free movement before starting\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  21412527 → Supersedes 3861194 → Supersedes 872518\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  3861194 earlier number superseded by this part\n \u003c\/li\u003e\n \u003cli\u003e\n  872518 earlier number superseded by this part\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":53384330346788,"sku":"N624510","price":214.2,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_90824a46-2bce-4444-a534-811ef792cda9.png?v=1788058638","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/21412527-piston-genuine-volvo-penta","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}