{"product_id":"head-decarbonizing-gasket-set-fits-volvo-penta-md1b-md2b-md3b-aqd2b-d1-d2-d3-replaces-876377","title":"Head Decarbonizing Gasket Set – Fits Volvo Penta MD1B MD2B MD3B AQD2B D1 D2 D3 (Replaces 876377)","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eHead Decarbonizing Gasket Set\u003c\/strong\u003e is designed for Volvo Penta MD1B, MD2B, MD3B, AQD2B, D1, D2, and D3 diesel engine models. The set provides critical sealing components required during cylinder head decarbonizing service, ensuring proper compression and preventing exhaust leaks across a range of Volvo Penta marine diesel applications.\u003c\/p\u003e\n\u003cp\u003eThis gasket set directly replaces Volvo Penta OEM part numbers 875500, 875502, 875504, 876374, 876375, and 876377.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDrop-in replacement for multiple Volvo Penta diesel engine families\u003c\/li\u003e\n  \u003cli\u003eQuantity requirements vary by model: MD1B requires 1 kit, AQD2B and MD2B require 2 kits, MD3B requires 3 kits\u003c\/li\u003e\n  \u003cli\u003eDesigned for head decarbonizing service and routine overhaul procedures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e876377\u003c\/td\u003e\n        \u003ctd\u003ePrimary OEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e875500\u003c\/td\u003e\n        \u003ctd\u003eSuperseded\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e875502\u003c\/td\u003e\n        \u003ctd\u003eSuperseded\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e875504\u003c\/td\u003e\n        \u003ctd\u003eSuperseded\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e876374\u003c\/td\u003e\n        \u003ctd\u003eSuperseded\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e876375\u003c\/td\u003e\n        \u003ctd\u003eSuperseded\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eKits Required\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eMD1B\u003c\/td\u003e\n        \u003ctd\u003e1\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eAQD2B\u003c\/td\u003e\n        \u003ctd\u003e2\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eMD2B\u003c\/td\u003e\n        \u003ctd\u003e2\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eMD3B\u003c\/td\u003e\n        \u003ctd\u003e3\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eD1\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eD2\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eD3\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eOEM Part Number\u003c\/dt\u003e\n  \u003cdd\u003e876377\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eHead decarbonizing service\u003c\/dd\u003e\n  \u003cdt\u003eEngine Type\u003c\/dt\u003e\n  \u003cdd\u003eDiesel\u003c\/dd\u003e\n  \u003cdt\u003eKit Configuration\u003c\/dt\u003e\n  \u003cdd\u003e1 Head Decarbonizing Gasket Set\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003e1 × Head Decarbonizing Gasket Set\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eVerify the number of kits required for your specific engine model before starting work (MD1B=1, AQD2B\/MD2B=2, MD3B=3).\u003c\/li\u003e\n  \u003cli\u003eDisconnect the battery and allow the engine to cool completely.\u003c\/li\u003e\n  \u003cli\u003eRemove valve cover, fuel lines, and any components obstructing access to the cylinder head.\u003c\/li\u003e\n  \u003cli\u003eCarefully remove the cylinder head bolts in the reverse of the tightening sequence.\u003c\/li\u003e\n  \u003cli\u003eLift the cylinder head off the block and inspect mating surfaces for damage or warping.\u003c\/li\u003e\n  \u003cli\u003eClean all carbon deposits from the cylinder head, valves, and piston crowns thoroughly.\u003c\/li\u003e\n  \u003cli\u003eRemove all old gasket material from the head and block surfaces using a scraper; avoid gouging metal.\u003c\/li\u003e\n  \u003cli\u003eInstall new gaskets from this set in the correct orientation according to your engine's service manual.\u003c\/li\u003e\n  \u003cli\u003eReinstall the cylinder head and torque bolts to specification in the correct sequence.\u003c\/li\u003e\n  \u003cli\u003eReconnect all fuel lines, electrical connections, and auxiliary components.\u003c\/li\u003e\n  \u003cli\u003eRefill coolant and check all connections for leaks before starting the engine.\u003c\/li\u003e\n  \u003cli\u003eRun the engine at idle and inspect for proper operation, checking for exhaust or coolant leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know how many kits I need?\u003c\/summary\u003e\n  \u003cp\u003eThe number of kits required depends on your engine model: MD1B requires 1 kit, AQD2B and MD2B each require 2 kits, and MD3B requires 3 kits. Always confirm your exact model before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I reuse the old gaskets during decarbonizing?\u003c\/summary\u003e\n  \u003cp\u003eNo, gaskets are single-use components. Reusing compressed or deformed gaskets will result in leaks, poor compression, and potential engine damage. Always install new gaskets when performing head service.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is decarbonizing and when should I do it?\u003c\/summary\u003e\n  \u003cp\u003eDecarbonizing is the process of removing carbon buildup from combustion chambers, valves, and piston crowns. It's typically performed every 500–1000 operating hours or when you notice rough running, loss of power, or excessive smoke.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWill this kit fit D1, D2, and D3 models?\u003c\/summary\u003e\n  \u003cp\u003eYes, this gasket set is compatible with Volvo Penta D1, D2, and D3 diesel engines. However, verify your specific engine configuration and serial number against Volvo service documentation to confirm fitment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDo I need special tools to replace these gaskets?\u003c\/summary\u003e\n  \u003cp\u003eYou will need a torque wrench, socket set, gasket scraper, and a clean workspace. Refer to your engine's service manual for torque specifications and tightening sequences. Professional installation is recommended if you lack experience with engine work.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are signs that I need to replace head gaskets?\u003c\/summary\u003e\n  \u003cp\u003eCommon symptoms include white smoke from the exhaust, coolant loss without visible leaks, overheating, rough idle, or oil contamination in the coolant. Perform a compression test if you suspect gasket failure.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":51025805836603,"sku":"23GK326","price":55.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/6669330297.jpg?v=1772959271","url":"https:\/\/seasierra.com\/products\/head-decarbonizing-gasket-set-fits-volvo-penta-md1b-md2b-md3b-aqd2b-d1-d2-d3-replaces-876377","provider":"SeaSierra","version":"1.0","type":"link"}