{"id":4244,"date":"2026-09-08T13:20:30","date_gmt":"2026-09-08T13:20:30","guid":{"rendered":"https:\/\/passionwebs.com\/elite-engines\/product\/cummins-qsb6-7-425hp-marine-diesel-engine\/"},"modified":"2026-09-08T13:20:35","modified_gmt":"2026-09-08T13:20:35","slug":"cummins-qsb6-7-425hp-marine-diesel-engine","status":"publish","type":"product","link":"https:\/\/passionwebs.com\/elite-engines\/product\/cummins-qsb6-7-425hp-marine-diesel-engine\/","title":{"rendered":"Cummins QSB6.7 425HP Marine Diesel Engine"},"content":{"rendered":"<h2>Description<\/h2>\n<h2 data-section-id=\"9jwza8\" data-start=\"0\" data-end=\"43\">New Cummins QSB6.7 425HP Marine Diesel Engine for sale<\/h2>\n<p data-start=\"45\" data-end=\"467\">The Cummins QSB6.7 425HP Marine Diesel Engine delivers the perfect balance of offshore performance, fuel efficiency, and long-term reliability for demanding marine applications. Designed with advanced electronic controls and high-pressure common rail fuel injection, this powerful <span style=\"color: #808080;\"><a style=\"color: #808080;\" href=\"https:\/\/bluewakemarine.co.uk\/product-category\/inboard-engines\/cummins-marine-engines\/\" target=\"_blank\" rel=\"noopener\">Cummins marine diesel engine<\/a><\/span> is trusted by commercial operators, sportfishing captains, patrol vessels, and luxury boat owners worldwide.<\/p>\n<p data-start=\"469\" data-end=\"814\">Built on Cummins\u2019 proven 6.7-liter platform, the QSB6.7 425HP offers fast throttle response, smooth acceleration, reduced vibration, and exceptional torque across the RPM range. Whether powering a repower project or a new vessel build, this marine diesel Cummins engine is engineered for dependable operation in harsh saltwater environments.<\/p>\n<p data-start=\"816\" data-end=\"1027\">The <span style=\"color: #808080;\"><a style=\"color: #808080;\" href=\"https:\/\/bluewakemarine.co.uk\/product-category\/inboard-engines\/cummins-marine-engines\/cummins-qsb-6-7\/\" target=\"_blank\" rel=\"noopener\">Cummins QSB6.7 425HP for sale<\/a><\/span> package is ideal for fishing boats, offshore cruisers, workboats, passenger vessels, and custom marine applications requiring reliable horsepower with lower operating costs.<\/p>\n<h2 data-section-id=\"1ma7m6t\" data-start=\"1029\" data-end=\"1044\">Key Features Of Cummins QSB6.7 425HP Marine Diesel Engine<\/h2>\n<ul data-start=\"1046\" data-end=\"1486\">\n<li data-section-id=\"1hasnys\" data-start=\"1046\" data-end=\"1096\">Advanced high-pressure common rail fuel system<\/li>\n<li data-section-id=\"1l272eh\" data-start=\"1097\" data-end=\"1149\">Electronically controlled marine diesel platform<\/li>\n<li data-section-id=\"d5cwyn\" data-start=\"1150\" data-end=\"1198\">Excellent fuel economy and reduced emissions<\/li>\n<li data-section-id=\"yzvmma\" data-start=\"1199\" data-end=\"1253\">Compact design for easier engine room installation<\/li>\n<li data-section-id=\"fmmnc6\" data-start=\"1254\" data-end=\"1291\">Smooth and quiet engine operation<\/li>\n<li data-section-id=\"17j8zii\" data-start=\"1292\" data-end=\"1342\">Strong low-end torque for offshore performance<\/li>\n<li data-section-id=\"s8pzi8\" data-start=\"1343\" data-end=\"1386\">Freshwater-cooled heat exchanger system<\/li>\n<li data-section-id=\"1p184hr\" data-start=\"1387\" data-end=\"1433\">Commercial-duty reliability and durability<\/li>\n<li data-section-id=\"3uuade\" data-start=\"1434\" data-end=\"1486\">Global Cummins service and parts support network<\/li>\n<\/ul>\n<h2 data-section-id=\"10skro4\" data-start=\"1488\" data-end=\"1509\">Standard Equipment For Cummins QSB6.7 425HP Marine Diesel Engine<\/h2>\n<ul data-start=\"1511\" data-end=\"1825\">\n<li data-section-id=\"1neivke\" data-start=\"1511\" data-end=\"1556\">Cummins QSB6.7 425HP marine diesel engine<\/li>\n<li data-section-id=\"awz10v\" data-start=\"1557\" data-end=\"1597\">Marine heat exchanger cooling system<\/li>\n<li data-section-id=\"168s2sd\" data-start=\"1598\" data-end=\"1633\">Electronic control module (ECM)<\/li>\n<li data-section-id=\"36m6gc\" data-start=\"1634\" data-end=\"1673\">Turbocharger and aftercooler system<\/li>\n<li data-section-id=\"wc34a0\" data-start=\"1674\" data-end=\"1699\">Marine wiring harness<\/li>\n<li data-section-id=\"1w86of2\" data-start=\"1700\" data-end=\"1743\">Digital engine monitoring compatibility<\/li>\n<li data-section-id=\"2oxqds\" data-start=\"1744\" data-end=\"1787\">Flexible mounting configuration options<\/li>\n<li data-section-id=\"1r3s2hi\" data-start=\"1788\" data-end=\"1825\">Operator and installation manuals<\/li>\n<\/ul>\n<h2 data-section-id=\"14cnuet\" data-start=\"1827\" data-end=\"1859\">Table Technical Specification<\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"1861\" data-end=\"2311\">\n<thead data-start=\"1861\" data-end=\"1888\">\n<tr data-start=\"1861\" data-end=\"1888\">\n<th class=\"last:pe-10\" data-start=\"1861\" data-end=\"1877\" data-col-size=\"sm\">Specification<\/th>\n<th class=\"last:pe-10\" data-start=\"1877\" data-end=\"1888\" data-col-size=\"sm\">Details<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"1899\" data-end=\"2311\">\n<tr data-start=\"1899\" data-end=\"1932\">\n<td data-start=\"1899\" data-end=\"1914\" data-col-size=\"sm\">Engine Model<\/td>\n<td data-col-size=\"sm\" data-start=\"1914\" data-end=\"1932\">Cummins QSB6.7<\/td>\n<\/tr>\n<tr data-start=\"1933\" data-end=\"1982\">\n<td data-start=\"1933\" data-end=\"1947\" data-col-size=\"sm\">Engine Type<\/td>\n<td data-col-size=\"sm\" data-start=\"1947\" data-end=\"1982\">Inline 6-Cylinder Marine Diesel<\/td>\n<\/tr>\n<tr data-start=\"1983\" data-end=\"2005\">\n<td data-start=\"1983\" data-end=\"1996\" data-col-size=\"sm\">Horsepower<\/td>\n<td data-col-size=\"sm\" data-start=\"1996\" data-end=\"2005\">425HP<\/td>\n<\/tr>\n<tr data-start=\"2006\" data-end=\"2035\">\n<td data-start=\"2006\" data-end=\"2021\" data-col-size=\"sm\">Displacement<\/td>\n<td data-col-size=\"sm\" data-start=\"2021\" data-end=\"2035\">6.7 Liters<\/td>\n<\/tr>\n<tr data-start=\"2036\" data-end=\"2079\">\n<td data-start=\"2036\" data-end=\"2050\" data-col-size=\"sm\">Fuel System<\/td>\n<td data-col-size=\"sm\" data-start=\"2050\" data-end=\"2079\">High-Pressure Common Rail<\/td>\n<\/tr>\n<tr data-start=\"2080\" data-end=\"2123\">\n<td data-start=\"2080\" data-end=\"2093\" data-col-size=\"sm\">Aspiration<\/td>\n<td data-col-size=\"sm\" data-start=\"2093\" data-end=\"2123\">Turbocharged &amp; Aftercooled<\/td>\n<\/tr>\n<tr data-start=\"2124\" data-end=\"2163\">\n<td data-start=\"2124\" data-end=\"2141\" data-col-size=\"sm\">Cooling System<\/td>\n<td data-start=\"2141\" data-end=\"2163\" data-col-size=\"sm\">Freshwater Cooling<\/td>\n<\/tr>\n<tr data-start=\"2164\" data-end=\"2200\">\n<td data-start=\"2164\" data-end=\"2182\" data-col-size=\"sm\">Starting System<\/td>\n<td data-col-size=\"sm\" data-start=\"2182\" data-end=\"2200\">Electric Start<\/td>\n<\/tr>\n<tr data-start=\"2201\" data-end=\"2251\">\n<td data-start=\"2201\" data-end=\"2215\" data-col-size=\"sm\">Application<\/td>\n<td data-col-size=\"sm\" data-start=\"2215\" data-end=\"2251\">Commercial &amp; Recreational Marine<\/td>\n<\/tr>\n<tr data-start=\"2252\" data-end=\"2311\">\n<td data-start=\"2252\" data-end=\"2275\" data-col-size=\"sm\">Emissions Compliance<\/td>\n<td data-col-size=\"sm\" data-start=\"2275\" data-end=\"2311\">Modern Marine Emission Standards<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<h2 data-section-id=\"1a6r0x6\" data-start=\"2313\" data-end=\"2350\">Offshore Performance You Can Trust<\/h2>\n<p data-start=\"2352\" data-end=\"2664\">The <span style=\"color: #808080;\"><a style=\"color: #808080;\" href=\"https:\/\/coastalwavemarine.com\/product-category\/inboard-engines\/cummins-marine-engines\/\" target=\"_blank\" rel=\"noopener\">Cummins<\/a><\/span> QSB6.7 marine diesel engine is widely respected for its durability under continuous offshore operation. Captains and vessel operators value this engine for its ability to maintain consistent power delivery during long-distance cruising, heavy-load operations, and high-demand marine environments.<\/p>\n<p data-start=\"2666\" data-end=\"2839\">Its lightweight yet robust construction also makes the QSB6.7 an excellent choice for repower applications where improved efficiency and better vessel handling are required.<\/p>\n<h2 data-section-id=\"qpzftu\" data-start=\"2841\" data-end=\"2870\">Worldwide Supply &amp; Support<\/h2>\n<p data-start=\"2872\" data-end=\"3161\">We supply brand-new <span style=\"color: #808080;\"><a style=\"color: #808080;\" href=\"https:\/\/bluewakemarine.co.uk\/product-category\/inboard-engines\/\" target=\"_blank\" rel=\"noopener\">Cummins marine engines <\/a><\/span>sourced through trusted distribution channels with worldwide shipping available. Each engine package can be configured according to vessel requirements, including compatible marine gearboxes, controls, instrumentation, and propulsion options.<\/p>\n<p data-start=\"3163\" data-end=\"3285\">All engines undergo inspection and preparation prior to dispatch to ensure optimal reliability and installation readiness.<\/p>\n<h2 data-section-id=\"1anivml\" data-start=\"3287\" data-end=\"3310\">Warranty Information<\/h2>\n<p data-start=\"3312\" data-end=\"3589\">The Cummins QSB6.7 425HP includes standard manufacturer warranty coverage, with extended warranty options available depending on application and operating profile. Genuine Cummins parts and global service support help maintain long-term operational confidence and resale value.<\/p>\n<h2 data-section-id=\"py5cmj\" data-start=\"3591\" data-end=\"3624\">Request Pricing &amp; Availability<\/h2>\n<p data-start=\"3626\" data-end=\"3909\" data-is-last-node=\"\" data-is-only-node=\"\">Looking for the best <a href=\"https:\/\/bluewakemarine.co.uk\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #808080;\">Cummins QSB6.7 425HP price<\/span><\/a> or ready to secure a dependable Cummins QSB6.7 425HP marine diesel engine for sale for your vessel? Contact us today for current availability, commercial quotations, shipping options, and complete engine package configurations.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Description New Cummins QSB6.7 425HP Marine Diesel Engine for sale The Cummins QSB6.7 425HP Marine Diesel Engine delivers the perfect balance of offshore performance, fuel efficiency, and long-term reliability for demanding marine applications. Designed with advanced electronic controls and high-pressure common rail fuel injection, this powerful Cummins marine diesel engine is trusted by commercial operators, sportfishing captains, patrol vessels, and luxury boat owners worldwide. Built on Cummins\u2019 proven 6.7-liter platform, the QSB6.7 425HP offers fast throttle response, smooth acceleration, reduced vibration, and exceptional torque across the RPM range. Whether powering a repower project or a new vessel build, this marine diesel Cummins engine is engineered for dependable operation in harsh saltwater environments. The Cummins QSB6.7 425HP for sale package is ideal for fishing boats, offshore cruisers, workboats, passenger vessels, and custom marine applications requiring reliable horsepower with lower operating costs. Key Features Of Cummins QSB6.7 425HP Marine Diesel Engine Advanced high-pressure common rail fuel system Electronically controlled marine diesel platform Excellent fuel economy and reduced emissions Compact design for easier engine room installation Smooth and quiet engine operation Strong low-end torque for offshore performance Freshwater-cooled heat exchanger system Commercial-duty reliability and durability Global Cummins service and parts support network Standard Equipment For Cummins QSB6.7 425HP Marine Diesel Engine Cummins QSB6.7 425HP marine diesel engine Marine heat exchanger cooling system Electronic control module (ECM) Turbocharger and aftercooler system Marine wiring harness Digital engine monitoring compatibility Flexible mounting configuration options Operator and installation manuals Table Technical Specification Specification Details Engine Model Cummins QSB6.7 Engine Type Inline 6-Cylinder Marine Diesel Horsepower 425HP Displacement 6.7 Liters Fuel System High-Pressure Common Rail Aspiration Turbocharged &amp; Aftercooled Cooling System Freshwater Cooling Starting System Electric Start Application Commercial &amp; Recreational Marine Emissions Compliance Modern Marine Emission Standards Offshore Performance You Can Trust The Cummins QSB6.7 marine diesel engine is widely respected for its durability under continuous offshore operation. Captains and vessel operators value this engine for its ability to maintain consistent power delivery during long-distance cruising, heavy-load operations, and high-demand marine environments. Its lightweight yet robust construction also makes the QSB6.7 an excellent choice for repower applications where improved efficiency and better vessel handling are required. Worldwide Supply &amp; Support We supply brand-new Cummins marine engines sourced through trusted distribution channels with worldwide shipping available. Each engine package can be configured according to vessel requirements, including compatible marine gearboxes, controls, instrumentation, and propulsion options. All engines undergo inspection and preparation prior to dispatch to ensure optimal reliability and installation readiness. Warranty Information The Cummins QSB6.7 425HP includes standard manufacturer warranty coverage, with extended warranty options available depending on application and operating profile. Genuine Cummins parts and global service support help maintain long-term operational confidence and resale value. Request Pricing &amp; Availability Looking for the best Cummins QSB6.7 425HP price or ready to secure a dependable Cummins QSB6.7 425HP marine diesel engine for sale for your vessel? Contact us today for current availability, commercial quotations, shipping options, and complete engine package configurations.<\/p>\n","protected":false},"featured_media":4243,"comment_status":"closed","ping_status":"open","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[55],"product_tag":[],"class_list":["post-4244","product","type-product","status-publish","has-post-thumbnail","product_cat-cummins-qsb-6-7","desktop-align-left","tablet-align-left","mobile-align-left","first","instock","sale","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product\/4244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/comments?post=4244"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/media\/4243"}],"wp:attachment":[{"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/media?parent=4244"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product_brand?post=4244"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product_cat?post=4244"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product_tag?post=4244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}