{"product_id":"876431-head-decarbonizing-gasket-kit-for-volvo-penta-md7a-md7b-jlm-marine","title":"876431 Head Decarbonizing Gasket Kit for Volvo Penta MD7A MD7B | JLM Marine","description":"\u003ch2\u003eHead Decarbonizing Gasket Kit for Volvo Penta MD7A MD7B Marine Engine – 876431\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003eHead Decarbonizing Gasket Kit\u003c\/strong\u003e is specifically designed for \u003cstrong\u003eVolvo Penta MD7A and MD7B\u003c\/strong\u003e marine diesel engines (S\/N: 35145 and later). It provides all the essential gaskets needed for head decarbonization and maintenance procedures, ensuring proper sealing and engine performance.\u003c\/p\u003e\n\n\u003cp\u003eThis kit directly replaces \u003cstrong\u003eVolvo Penta 876431, 875613, and 876430\u003c\/strong\u003e, as well as aftermarket equivalents from Crom Marine (121047, 121046) and Orbitrade (21431, 21430), offering broad cross-compatibility for your service needs.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete gasket kit for head decarbonization procedures\u003c\/li\u003e\n\u003cli\u003eFits Volvo Penta MD7A and MD7B marine diesel engines\u003c\/li\u003e\n\u003cli\u003eReplaces multiple OEM and aftermarket part numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands:\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\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\u003e876431\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e875613\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e876430\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrom Marine\u003c\/td\u003e\n\u003ctd\u003e121047\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrom Marine\u003c\/td\u003e\n\u003ctd\u003e121046\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrbitrade\u003c\/td\u003e\n\u003ctd\u003e21431\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrbitrade\u003c\/td\u003e\n\u003ctd\u003e21430\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\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\u003eMD7A\u003c\/td\u003e\n\u003ctd\u003eS\/N: 35145 and later\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eMD7B\u003c\/td\u003e\n\u003ctd\u003eS\/N: 35145 and later\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Number\u003c\/td\u003e\n\u003ctd\u003e876431\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eHead Decarbonizing Gasket Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eMarine Diesel Engine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Engines\u003c\/td\u003e\n\u003ctd\u003eVolvo Penta MD7A, MD7B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis package includes:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Head Decarbonizing Gasket Kit (complete set)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003eEnsure the engine is completely cool and disconnect the battery before beginning any work.\u003c\/li\u003e\n\u003cli\u003eRemove the cylinder head cover and set aside all fasteners in an organized manner.\u003c\/li\u003e\n\u003cli\u003eCarefully remove the old gaskets from all mating surfaces, ensuring no remnants remain.\u003c\/li\u003e\n\u003cli\u003eClean all sealing surfaces thoroughly with appropriate solvent and a non-abrasive scraper. Allow surfaces to dry completely.\u003c\/li\u003e\n\u003cli\u003eInspect the cylinder head and block for cracks, warping, or damage before proceeding.\u003c\/li\u003e\n\u003cli\u003ePosition the new gaskets from the kit onto the cleaned surfaces, following the correct orientation.\u003c\/li\u003e\n\u003cli\u003eReinstall the cylinder head or components, ensuring proper alignment with dowel pins if present.\u003c\/li\u003e\n\u003cli\u003eTorque all fasteners to the manufacturer's specifications in the correct sequence (consult your service manual).\u003c\/li\u003e\n\u003cli\u003eReinstall the cylinder head cover with the new gasket, tightening fasteners evenly.\u003c\/li\u003e\n\u003cli\u003eReconnect the battery and perform a visual inspection for proper gasket seating.\u003c\/li\u003e\n\u003cli\u003eStart the engine and allow it to reach operating temperature while monitoring for leaks.\u003c\/li\u003e\n\u003cli\u003eAfter initial run-in, re-check all fastener torque values as recommended by the manufacturer.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this gasket kit fits my Volvo Penta engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Verify that your engine is a \u003cstrong\u003eMD7A or MD7B model with serial number 35145 or later\u003c\/strong\u003e. Cross-reference your existing part number (876431, 875613, or 876430) with the numbers listed in the Part Number Cross-Reference table above.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's included in this head decarbonizing gasket kit?\u003c\/strong\u003e\u003cbr\u003e\nA: This is a complete head decarbonizing gasket kit that includes all necessary gaskets required for head decarbonization procedures on MD7A and MD7B engines. The kit provides all sealing components needed for proper reassembly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: When should I replace the head gaskets on my Volvo Penta MD7?\u003c\/strong\u003e\u003cbr\u003e\nA: Replace head gaskets during decarbonization services, when performing cylinder head removal for any reason, or if you notice signs of gasket failure such as coolant leaks, oil leaks, overheating, or loss of compression.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse the old gaskets if they look intact?\u003c\/strong\u003e\u003cbr\u003e\nA: No, gaskets should never be reused. Once compressed and torqued, gaskets lose their sealing ability and may cause leaks or engine damage if reinstalled.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM or aftermarket gasket kit?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":51980999786809,"sku":"23GK325","price":58.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/12_51b62e74-6818-4142-929c-8f67e760e787.jpg?v=1772414125","url":"https:\/\/jlmmarine.com\/es\/products\/876431-head-decarbonizing-gasket-kit-for-volvo-penta-md7a-md7b-jlm-marine","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}