{"product_id":"head-gasket-set-decarbonizing-kit-fits-volvo-penta-aq115a-aq130a-aq130c-mb20b-replaces-876356-875401","title":"Head Gasket Set Decarbonizing Kit – Fits Volvo Penta AQ115A AQ130A AQ130C MB20B (Replaces 876356, 875401)","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\n\u003cp\u003eThis \u003cstrong\u003eHead Gasket Set Decarbonizing Kit\u003c\/strong\u003e is designed for Volvo Penta petrol marine engines, specifically the AQ115A, AQ130A, AQ130C, and MB20B models. Engineered to deliver a reliable seal during engine overhaul or decarbonizing service, this aftermarket kit ensures proper compression and cooling system integrity for your Volvo Penta powerplant.\u003c\/p\u003e\n\n\u003cp\u003eThis kit directly replaces Volvo Penta part numbers 876356 and 875401, as well as Crom Marine 121041.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eEssential gasket set for decarbonizing and head service procedures\u003c\/li\u003e\n  \u003cli\u003eCompatible with Volvo Penta petrol marine engines\u003c\/li\u003e\n  \u003cli\u003eIncludes all necessary components for a complete head gasket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\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\u003e876356\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\u003e875401\u003c\/td\u003e\n        \u003ctd\u003eAlternate OEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCrom Marine\u003c\/td\u003e\n        \u003ctd\u003e121041\u003c\/td\u003e\n        \u003ctd\u003eAftermarket equivalent\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\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\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\u003eAQ115A\u003c\/td\u003e\n        \u003ctd\u003ePetrol marine engine\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eAQ130A\u003c\/td\u003e\n        \u003ctd\u003ePetrol marine engine\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eAQ130C\u003c\/td\u003e\n        \u003ctd\u003ePetrol marine engine\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eMB20B\u003c\/td\u003e\n        \u003ctd\u003ePetrol marine engine\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\n\u003cdl\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eHead gasket decarbonizing kit\u003c\/dd\u003e\n  \u003cdt\u003eEngine Type\u003c\/dt\u003e\n  \u003cdd\u003ePetrol marine engines\u003c\/dd\u003e\n  \u003cdt\u003eOEM Reference\u003c\/dt\u003e\n  \u003cdd\u003e876356, 875401\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n  \u003cdd\u003eOEM-spec composite gasket materials\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003e1 × Head Gasket Decarbonizing Kit\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\n\u003col\u003e\n  \u003cli\u003eDisconnect battery and allow engine to cool completely before beginning work.\u003c\/li\u003e\n  \u003cli\u003eRemove valve cover, intake manifold, and exhaust manifold as required for access to cylinder head bolts.\u003c\/li\u003e\n  \u003cli\u003eLoosen cylinder head bolts in the reverse order of the tightening sequence specified in your service manual.\u003c\/li\u003e\n  \u003cli\u003eCarefully lift cylinder head and inspect mating surfaces for warping or damage.\u003c\/li\u003e\n  \u003cli\u003eThoroughly clean all gasket surfaces on both the head and block, removing all old gasket material and carbon deposits.\u003c\/li\u003e\n  \u003cli\u003ePosition the new head gasket on the engine block, ensuring all dowel pins and alignment features are properly seated.\u003c\/li\u003e\n  \u003cli\u003ePlace the cylinder head onto the block, aligning bolt holes and dowel pins.\u003c\/li\u003e\n  \u003cli\u003eInstall cylinder head bolts hand-tight, then torque to specification in the proper sequence using a calibrated torque wrench.\u003c\/li\u003e\n  \u003cli\u003eReinstall exhaust manifold, intake manifold, and valve cover with new gaskets where applicable.\u003c\/li\u003e\n  \u003cli\u003eReconnect battery, refill coolant, and check for leaks before starting the engine.\u003c\/li\u003e\n  \u003cli\u003eRun engine to operating temperature and recheck torque on head bolts after initial heat cycle if specified by manufacturer.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if my head gasket needs replacement?\u003c\/summary\u003e\n  \u003cp\u003eCommon signs include white smoke from exhaust, coolant loss with no visible leaks, engine overheating, milky oil or coolant contamination, and loss of compression. If you notice any of these symptoms, inspect the head gasket and replace as needed.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eWhat's included in a decarbonizing kit versus a standard head gasket?\u003c\/summary\u003e\n  \u003cp\u003eA decarbonizing kit typically includes the head gasket plus additional seals and gaskets needed during a full head removal and cleaning service. This comprehensive approach ensures all critical sealing surfaces are refreshed during engine maintenance.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eDo I need to resurface the cylinder head when replacing the gasket?\u003c\/summary\u003e\n  \u003cp\u003eInspect the head for warping using a precision straight edge and feeler gauge. If warpage exceeds manufacturer specifications, the head must be resurfaced by a qualified machine shop before installing the new gasket.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eCan I reuse cylinder head bolts?\u003c\/summary\u003e\n  \u003cp\u003eConsult your engine service manual—many Volvo Penta engines use torque-to-yield bolts that must be replaced. Reusing stretched bolts can result in improper clamping force and gasket failure.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eWhat torque sequence and specifications should I use?\u003c\/summary\u003e\n  \u003cp\u003eAlways follow the torque sequence and values specified in the Volvo Penta service manual for your specific engine model. Incorrect torque or sequence can cause gasket failure and engine damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eHow long does a head gasket replacement take?\u003c\/summary\u003e\n  \u003cp\u003eFor an experienced technician, a head gasket replacement on these Volvo Penta engines typically takes 4–8 hours depending on accessibility and whether additional decarbonizing or machine work is required.\u003c\/p\u003e\n\u003c\/details\u003e\n\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\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\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\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\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":51025805771067,"sku":"23GK324","price":70.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/12_f5266bff-d365-4c02-9847-eb47d1d0ac7d.jpg?v=1772959267","url":"https:\/\/seasierra.com\/products\/head-gasket-set-decarbonizing-kit-fits-volvo-penta-aq115a-aq130a-aq130c-mb20b-replaces-876356-875401","provider":"SeaSierra","version":"1.0","type":"link"}