{"id":4278,"date":"2026-09-08T13:27:17","date_gmt":"2026-09-08T13:27:17","guid":{"rendered":"https:\/\/passionwebs.com\/elite-engines\/product\/cummins-qsb4-5-150hp-inboard-marine-engine\/"},"modified":"2026-09-08T13:27:21","modified_gmt":"2026-09-08T13:27:21","slug":"cummins-qsb4-5-150hp-inboard-marine-engine","status":"publish","type":"product","link":"https:\/\/passionwebs.com\/elite-engines\/product\/cummins-qsb4-5-150hp-inboard-marine-engine\/","title":{"rendered":"Cummins QSB4.5 150HP Inboard Marine Engine"},"content":{"rendered":"<h2>Description<\/h2>\n<h1 data-section-id=\"6je0js\" data-start=\"180\" data-end=\"224\">Cummins QSB4.5 150HP Inboard Marine Engine<\/h1>\n<h2 data-section-id=\"9j0yeo\" data-start=\"226\" data-end=\"291\">Compact 4.5L Marine Diesel Power | Bluewake Marine Enterprises<\/h2>\n<p data-start=\"293\" data-end=\"647\">The <strong data-start=\"297\" data-end=\"343\">Cummins QSB4.5 150HP inboard marine engine<\/strong> is a compact, efficient, and highly reliable propulsion solution designed for modern marine vessels. As part of the QSB4.5 series, this engine delivers <strong data-start=\"496\" data-end=\"563\">smooth operation, excellent fuel economy, and long service life<\/strong>, making it an ideal choice for both recreational and light commercial applications.<\/p>\n<p data-start=\"649\" data-end=\"833\"><strong data-start=\"649\" data-end=\"833\">If you are looking for a Cummins QSB4.5 150HP inboard marine engine for sale, Bluewake Marine Enterprises provides competitive pricing, expert support, and fast worldwide shipping.<\/strong><\/p>\n<p data-start=\"835\" data-end=\"1115\">Built on a durable <strong data-start=\"854\" data-end=\"901\">4.5-liter inline 4-cylinder diesel platform<\/strong>, the QSB4.5 150HP incorporates advanced <strong data-start=\"942\" data-end=\"993\">high-pressure common rail (HPCR) fuel injection<\/strong>, along with turbocharging and aftercooling, ensuring efficient combustion, responsive performance, and reduced emissions.<\/p>\n<hr data-start=\"1117\" data-end=\"1120\">\n<h2 data-section-id=\"1ma7m6t\" data-start=\"1122\" data-end=\"1137\">Key Features<\/h2>\n<ul data-start=\"1139\" data-end=\"1677\">\n<li data-section-id=\"tou2dh\" data-start=\"1139\" data-end=\"1202\">150HP output for efficient and dependable marine propulsion<\/li>\n<li data-section-id=\"bc0n42\" data-start=\"1203\" data-end=\"1279\">High-pressure common rail (HPCR) fuel system for optimized fuel delivery<\/li>\n<li data-section-id=\"1nlwb79\" data-start=\"1280\" data-end=\"1343\">Turbocharged and aftercooled for improved engine efficiency<\/li>\n<li data-section-id=\"1x52y64\" data-start=\"1344\" data-end=\"1417\">Electronic Control Module (ECM) for real-time diagnostics and control<\/li>\n<li data-section-id=\"ysj0fg\" data-start=\"1418\" data-end=\"1487\">Compact design for easy installation in tight engine compartments<\/li>\n<li data-section-id=\"1wz9nh7\" data-start=\"1488\" data-end=\"1544\">Low noise and vibration for enhanced onboard comfort<\/li>\n<li data-section-id=\"1bbsax0\" data-start=\"1545\" data-end=\"1607\">Extended maintenance intervals for reduced operating costs<\/li>\n<li data-section-id=\"qz8n92\" data-start=\"1608\" data-end=\"1677\">Supported globally by Cummins and <strong data-start=\"1644\" data-end=\"1675\">Bluewake Marine Enterprises<\/strong><\/li>\n<\/ul>\n<hr data-start=\"1679\" data-end=\"1682\">\n<h2 data-section-id=\"mu966k\" data-start=\"1684\" data-end=\"1699\">Applications<\/h2>\n<p data-start=\"1701\" data-end=\"1761\">The Cummins QSB4.5 150HP inboard marine engine is ideal for:<\/p>\n<ul data-start=\"1763\" data-end=\"1940\">\n<li data-section-id=\"1jll8u4\" data-start=\"1763\" data-end=\"1803\">Small to mid-size recreational boats<\/li>\n<li data-section-id=\"14scvst\" data-start=\"1804\" data-end=\"1843\">Coastal and inshore fishing vessels<\/li>\n<li data-section-id=\"8h5bg1\" data-start=\"1844\" data-end=\"1879\">Light-duty commercial workboats<\/li>\n<li data-section-id=\"10fvag3\" data-start=\"1880\" data-end=\"1910\">Patrol and service vessels<\/li>\n<li data-section-id=\"1ek04fe\" data-start=\"1911\" data-end=\"1940\">Passenger transport boats<\/li>\n<\/ul>\n<hr data-start=\"1942\" data-end=\"1945\">\n<h2 data-section-id=\"1cgu054\" data-start=\"1947\" data-end=\"1974\">Technical Specifications<\/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=\"1976\" data-end=\"2410\">\n<thead data-start=\"1976\" data-end=\"2003\">\n<tr data-start=\"1976\" data-end=\"2003\">\n<th class=\"\" data-start=\"1976\" data-end=\"1992\" data-col-size=\"sm\">Specification<\/th>\n<th class=\"\" data-start=\"1992\" data-end=\"2003\" data-col-size=\"sm\">Details<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"2028\" data-end=\"2410\">\n<tr data-start=\"2028\" data-end=\"2061\">\n<td data-start=\"2028\" data-end=\"2043\" data-col-size=\"sm\">Engine Model<\/td>\n<td data-start=\"2043\" data-end=\"2061\" data-col-size=\"sm\">Cummins QSB4.5<\/td>\n<\/tr>\n<tr data-start=\"2062\" data-end=\"2111\">\n<td data-start=\"2062\" data-end=\"2076\" data-col-size=\"sm\">Engine Type<\/td>\n<td data-start=\"2076\" data-end=\"2111\" data-col-size=\"sm\">Inline 4-cylinder marine diesel<\/td>\n<\/tr>\n<tr data-start=\"2112\" data-end=\"2142\">\n<td data-start=\"2112\" data-end=\"2126\" data-col-size=\"sm\">Rated Power<\/td>\n<td data-start=\"2126\" data-end=\"2142\" data-col-size=\"sm\">150 HP (MHP)<\/td>\n<\/tr>\n<tr data-start=\"2143\" data-end=\"2172\">\n<td data-start=\"2143\" data-end=\"2158\" data-col-size=\"sm\">Displacement<\/td>\n<td data-start=\"2158\" data-end=\"2172\" data-col-size=\"sm\">4.5 Liters<\/td>\n<\/tr>\n<tr data-start=\"2173\" data-end=\"2223\">\n<td data-start=\"2173\" data-end=\"2187\" data-col-size=\"sm\">Fuel System<\/td>\n<td data-start=\"2187\" data-end=\"2223\" data-col-size=\"sm\">High-pressure common rail (HPCR)<\/td>\n<\/tr>\n<tr data-start=\"2224\" data-end=\"2267\">\n<td data-start=\"2224\" data-end=\"2237\" data-col-size=\"sm\">Aspiration<\/td>\n<td data-start=\"2237\" data-end=\"2267\" data-col-size=\"sm\">Turbocharged &amp; aftercooled<\/td>\n<\/tr>\n<tr data-start=\"2268\" data-end=\"2319\">\n<td data-start=\"2268\" data-end=\"2285\" data-col-size=\"sm\">Cooling System<\/td>\n<td data-start=\"2285\" data-end=\"2319\" data-col-size=\"sm\">Heat exchanger or keel cooling<\/td>\n<\/tr>\n<tr data-start=\"2320\" data-end=\"2357\">\n<td data-start=\"2320\" data-end=\"2337\" data-col-size=\"sm\">Control System<\/td>\n<td data-start=\"2337\" data-end=\"2357\" data-col-size=\"sm\">Electronic (ECM)<\/td>\n<\/tr>\n<tr data-start=\"2358\" data-end=\"2410\">\n<td data-start=\"2358\" data-end=\"2374\" data-col-size=\"sm\">Configuration<\/td>\n<td data-start=\"2374\" data-end=\"2410\" data-col-size=\"sm\">Inboard marine propulsion engine<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<hr data-start=\"2412\" data-end=\"2415\">\n<h2 data-section-id=\"czclqn\" data-start=\"2417\" data-end=\"2455\"><span role=\"text\"><strong data-start=\"2420\" data-end=\"2455\">Manufacturer Warranty &amp; Support<\/strong><\/span><\/h2>\n<p data-start=\"2457\" data-end=\"2674\">The <strong data-start=\"2461\" data-end=\"2507\">Cummins QSB4.5 150HP inboard marine engine<\/strong> is backed by a <strong data-start=\"2523\" data-end=\"2556\">Cummins manufacturer warranty<\/strong>, providing long-term protection and confidence for vessel owners and operators. Warranty coverage typically includes:<\/p>\n<ul data-start=\"2676\" data-end=\"2899\">\n<li data-section-id=\"1lizan3\" data-start=\"2676\" data-end=\"2739\"><strong data-start=\"2678\" data-end=\"2737\">Protection against defects in materials and workmanship<\/strong><\/li>\n<li data-section-id=\"1al6h5k\" data-start=\"2740\" data-end=\"2782\"><strong data-start=\"2742\" data-end=\"2780\">Coverage for key engine components<\/strong><\/li>\n<li data-section-id=\"13wwrk3\" data-start=\"2783\" data-end=\"2843\"><strong data-start=\"2785\" data-end=\"2841\">Access to Cummins\u2019 global authorized service network<\/strong><\/li>\n<li data-section-id=\"1x1pbao\" data-start=\"2844\" data-end=\"2899\"><strong data-start=\"2846\" data-end=\"2897\">Availability of genuine Cummins parts worldwide<\/strong><\/li>\n<\/ul>\n<p data-start=\"2901\" data-end=\"3090\"><strong data-start=\"2901\" data-end=\"3090\">Warranty terms may vary depending on application type, installation, and region. Bluewake Marine Enterprises provides full assistance with warranty registration and after-sales support.<\/strong><\/p>\n<hr data-start=\"3092\" data-end=\"3095\">\n<h2 data-section-id=\"iy809f\" data-start=\"3097\" data-end=\"3155\"><span role=\"text\"><strong data-start=\"3100\" data-end=\"3155\">Gearbox Compatibility &amp; Marine Transmission Options<\/strong><\/span><\/h2>\n<p data-start=\"3157\" data-end=\"3345\">The Cummins QSB4.5 150HP is engineered for seamless integration with a wide range of <strong data-start=\"3242\" data-end=\"3285\">marine gearboxes and propulsion systems<\/strong>, ensuring adaptability for different vessel configurations.<\/p>\n<p data-start=\"3347\" data-end=\"3405\"><strong data-start=\"3347\" data-end=\"3405\">Common compatible marine transmission systems include:<\/strong><\/p>\n<ul data-start=\"3407\" data-end=\"3622\">\n<li data-section-id=\"j9p7vb\" data-start=\"3407\" data-end=\"3456\"><strong data-start=\"3409\" data-end=\"3454\">ZF Marine Transmissions (ZF\/Hurth series)<\/strong><\/li>\n<li data-section-id=\"4k7qlb\" data-start=\"3457\" data-end=\"3491\"><strong data-start=\"3459\" data-end=\"3489\">Twin Disc marine gearboxes<\/strong><\/li>\n<li data-section-id=\"1sb7b4j\" data-start=\"3492\" data-end=\"3537\"><strong data-start=\"3494\" data-end=\"3535\">ZF Mathers electronic control systems<\/strong><\/li>\n<li data-section-id=\"9bl0es\" data-start=\"3538\" data-end=\"3622\"><strong data-start=\"3540\" data-end=\"3620\">Other compatible marine reduction gearboxes depending on vessel requirements<\/strong><\/li>\n<\/ul>\n<p data-start=\"3624\" data-end=\"3645\">This engine supports:<\/p>\n<ul data-start=\"3647\" data-end=\"3817\">\n<li data-section-id=\"1dcqmut\" data-start=\"3647\" data-end=\"3711\"><strong data-start=\"3649\" data-end=\"3709\">Multiple gear ratios for optimized propulsion efficiency<\/strong><\/li>\n<li data-section-id=\"vs6thf\" data-start=\"3712\" data-end=\"3767\"><strong data-start=\"3714\" data-end=\"3765\">Electronic and mechanical control compatibility<\/strong><\/li>\n<li data-section-id=\"1up9qop\" data-start=\"3768\" data-end=\"3817\"><strong data-start=\"3770\" data-end=\"3815\">Straight shaft and V-drive configurations<\/strong><\/li>\n<\/ul>\n<p data-start=\"3819\" data-end=\"3965\"><strong data-start=\"3819\" data-end=\"3965\">Bluewake Marine Enterprises provides expert consultation to ensure correct engine and gearbox pairing for optimal performance and reliability.<\/strong><\/p>\n<hr data-start=\"3967\" data-end=\"3970\">\n<h2 data-section-id=\"o243aj\" data-start=\"3972\" data-end=\"4038\"><span role=\"text\"><strong data-start=\"3975\" data-end=\"4038\">Cummins QSB4.5 150HP for Sale \u2013 Bluewake Marine Enterprises<\/strong><\/span><\/h2>\n<p data-start=\"4040\" data-end=\"4223\">At <strong data-start=\"4043\" data-end=\"4074\">Bluewake Marine Enterprises<\/strong>, we supply <strong data-start=\"4086\" data-end=\"4142\">Cummins QSB4.5 150HP inboard marine engines for sale<\/strong> to customers worldwide, ensuring quality, reliability, and professional support.<\/p>\n<p data-start=\"4225\" data-end=\"4246\">Our services include:<\/p>\n<ul data-start=\"4248\" data-end=\"4475\">\n<li data-section-id=\"gxbs9r\" data-start=\"4248\" data-end=\"4291\">Verified sourcing and quality assurance<\/li>\n<li data-section-id=\"7ue1os\" data-start=\"4292\" data-end=\"4322\">Competitive global pricing<\/li>\n<li data-section-id=\"4xmj\" data-start=\"4323\" data-end=\"4361\">Fast and secure worldwide shipping<\/li>\n<li data-section-id=\"18dgppb\" data-start=\"4362\" data-end=\"4420\">Technical guidance for engine and drivetrain selection<\/li>\n<li data-section-id=\"1l6tfuy\" data-start=\"4421\" data-end=\"4475\">Support for new installations and repower projects<\/li>\n<\/ul>\n<hr data-start=\"4477\" data-end=\"4480\">\n<h2 data-section-id=\"149t64s\" data-start=\"4482\" data-end=\"4519\"><span role=\"text\"><strong data-start=\"4485\" data-end=\"4519\">Repower &amp; Replacement Solution<\/strong><\/span><\/h2>\n<p data-start=\"4521\" data-end=\"4655\">The <strong data-start=\"4525\" data-end=\"4549\">Cummins QSB4.5 150HP<\/strong> is a practical and efficient choice for <strong data-start=\"4590\" data-end=\"4621\">marine repower applications<\/strong>, replacing older engines such as:<\/p>\n<ul data-start=\"4657\" data-end=\"4757\">\n<li data-section-id=\"1nz3r5e\" data-start=\"4657\" data-end=\"4680\">Cummins 4BTA series<\/li>\n<li data-section-id=\"11f3yjg\" data-start=\"4681\" data-end=\"4716\">Older mechanical diesel engines<\/li>\n<li data-section-id=\"m89x3u\" data-start=\"4717\" data-end=\"4757\">Comparable 4-cylinder marine engines<\/li>\n<\/ul>\n<p data-start=\"4759\" data-end=\"4868\">Upgrading to this model improves fuel efficiency, reduces emissions, and enhances overall vessel performance.<\/p>\n<hr data-start=\"4870\" data-end=\"4873\">\n<h2 data-section-id=\"ivd1mz\" data-start=\"4875\" data-end=\"4927\"><span role=\"text\"><strong data-start=\"4878\" data-end=\"4927\">Advanced Engineering &amp; Operational Efficiency<\/strong><\/span><\/h2>\n<p data-start=\"4929\" data-end=\"4997\">The QSB4.5 150HP incorporates modern Cummins engineering, including:<\/p>\n<ul data-start=\"4999\" data-end=\"5241\">\n<li data-section-id=\"1s3dk5o\" data-start=\"4999\" data-end=\"5065\">Electronically controlled fuel systems for precise performance<\/li>\n<li data-section-id=\"16uu344\" data-start=\"5066\" data-end=\"5122\">Improved combustion efficiency for cleaner operation<\/li>\n<li data-section-id=\"6jhhf\" data-start=\"5123\" data-end=\"5185\">Durable internal components designed for long service life<\/li>\n<li data-section-id=\"1rmo8dq\" data-start=\"5186\" data-end=\"5241\">Compatibility with modern marine propulsion systems<\/li>\n<\/ul>\n<p data-start=\"5243\" data-end=\"5356\">With <strong data-start=\"5248\" data-end=\"5279\">Bluewake Marine Enterprises<\/strong>, customers benefit from reliable supply, expert advice, and ongoing support.<\/p>\n<hr data-start=\"5358\" data-end=\"5361\">\n<h2 data-section-id=\"6pemx4\" data-start=\"5363\" data-end=\"5376\">Sales FAQs<\/h2>\n<p data-start=\"5378\" data-end=\"5567\"><strong data-start=\"5378\" data-end=\"5453\">Q: Do you have the Cummins QSB4.5 150HP inboard marine engine for sale?<\/strong><br data-start=\"5453\" data-end=\"5456\">A: Yes, <strong data-start=\"5464\" data-end=\"5567\">Bluewake Marine Enterprises offers this engine with worldwide availability and competitive pricing.<\/strong><\/p>\n<p data-start=\"5569\" data-end=\"5732\"><strong data-start=\"5569\" data-end=\"5624\">Q: Does the engine include a manufacturer warranty?<\/strong><br data-start=\"5624\" data-end=\"5627\">A: <strong data-start=\"5630\" data-end=\"5732\">Yes, it is backed by a Cummins manufacturer warranty, and we assist with registration and support.<\/strong><\/p>\n<p data-start=\"5734\" data-end=\"5911\"><strong data-start=\"5734\" data-end=\"5788\">Q: What gearboxes are compatible with this engine?<\/strong><br data-start=\"5788\" data-end=\"5791\">A: <strong data-start=\"5794\" data-end=\"5911\">It is compatible with ZF Marine and Twin Disc transmissions, among others, depending on application requirements.<\/strong><\/p>\n<p data-start=\"5913\" data-end=\"6063\"><strong data-start=\"5913\" data-end=\"5969\">Q: Is this engine suitable for repower applications?<\/strong><br data-start=\"5969\" data-end=\"5972\">A: <strong data-start=\"5975\" data-end=\"6063\">Yes, it is a reliable solution for upgrading older 4-cylinder marine diesel engines.<\/strong><\/p>\n<hr data-start=\"6065\" data-end=\"6068\">\n<h2 data-section-id=\"lto9yn\" data-start=\"6070\" data-end=\"6088\">Request a Quote<\/h2>\n<p data-start=\"6090\" data-end=\"6251\">For pricing, availability, and shipping details for the <strong data-start=\"6146\" data-end=\"6201\">Cummins QSB4.5 150HP inboard marine engine for sale<\/strong>, contact <strong data-start=\"6211\" data-end=\"6242\">Bluewake Marine Enterprises<\/strong> today.<\/p>\n<p data-start=\"6253\" data-end=\"6343\">We provide dependable marine engine solutions, expert support, and trusted global service.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Description Cummins QSB4.5 150HP Inboard Marine Engine Compact 4.5L Marine Diesel Power | Bluewake Marine Enterprises The Cummins QSB4.5 150HP inboard marine engine is a compact, efficient, and highly reliable propulsion solution designed for modern marine vessels. As part of the QSB4.5 series, this engine delivers smooth operation, excellent fuel economy, and long service life, making it an ideal choice for both recreational and light commercial applications. If you are looking for a Cummins QSB4.5 150HP inboard marine engine for sale, Bluewake Marine Enterprises provides competitive pricing, expert support, and fast worldwide shipping. Built on a durable 4.5-liter inline 4-cylinder diesel platform, the QSB4.5 150HP incorporates advanced high-pressure common rail (HPCR) fuel injection, along with turbocharging and aftercooling, ensuring efficient combustion, responsive performance, and reduced emissions. Key Features 150HP output for efficient and dependable marine propulsion High-pressure common rail (HPCR) fuel system for optimized fuel delivery Turbocharged and aftercooled for improved engine efficiency Electronic Control Module (ECM) for real-time diagnostics and control Compact design for easy installation in tight engine compartments Low noise and vibration for enhanced onboard comfort Extended maintenance intervals for reduced operating costs Supported globally by Cummins and Bluewake Marine Enterprises Applications The Cummins QSB4.5 150HP inboard marine engine is ideal for: Small to mid-size recreational boats Coastal and inshore fishing vessels Light-duty commercial workboats Patrol and service vessels Passenger transport boats Technical Specifications Specification Details Engine Model Cummins QSB4.5 Engine Type Inline 4-cylinder marine diesel Rated Power 150 HP (MHP) Displacement 4.5 Liters Fuel System High-pressure common rail (HPCR) Aspiration Turbocharged &amp; aftercooled Cooling System Heat exchanger or keel cooling Control System Electronic (ECM) Configuration Inboard marine propulsion engine Manufacturer Warranty &amp; Support The Cummins QSB4.5 150HP inboard marine engine is backed by a Cummins manufacturer warranty, providing long-term protection and confidence for vessel owners and operators. Warranty coverage typically includes: Protection against defects in materials and workmanship Coverage for key engine components Access to Cummins\u2019 global authorized service network Availability of genuine Cummins parts worldwide Warranty terms may vary depending on application type, installation, and region. Bluewake Marine Enterprises provides full assistance with warranty registration and after-sales support. Gearbox Compatibility &amp; Marine Transmission Options The Cummins QSB4.5 150HP is engineered for seamless integration with a wide range of marine gearboxes and propulsion systems, ensuring adaptability for different vessel configurations. Common compatible marine transmission systems include: ZF Marine Transmissions (ZF\/Hurth series) Twin Disc marine gearboxes ZF Mathers electronic control systems Other compatible marine reduction gearboxes depending on vessel requirements This engine supports: Multiple gear ratios for optimized propulsion efficiency Electronic and mechanical control compatibility Straight shaft and V-drive configurations Bluewake Marine Enterprises provides expert consultation to ensure correct engine and gearbox pairing for optimal performance and reliability. Cummins QSB4.5 150HP for Sale \u2013 Bluewake Marine Enterprises At Bluewake Marine Enterprises, we supply Cummins QSB4.5 150HP inboard marine engines for sale to customers worldwide, ensuring quality, reliability, and professional support. Our services include: Verified sourcing and quality assurance Competitive global pricing Fast and secure worldwide shipping Technical guidance for engine and drivetrain selection Support for new installations and repower projects Repower &amp; Replacement Solution The Cummins QSB4.5 150HP is a practical and efficient choice for marine repower applications, replacing older engines such as: Cummins 4BTA series Older mechanical diesel engines Comparable 4-cylinder marine engines Upgrading to this model improves fuel efficiency, reduces emissions, and enhances overall vessel performance. Advanced Engineering &amp; Operational Efficiency The QSB4.5 150HP incorporates modern Cummins engineering, including: Electronically controlled fuel systems for precise performance Improved combustion efficiency for cleaner operation Durable internal components designed for long service life Compatibility with modern marine propulsion systems With Bluewake Marine Enterprises, customers benefit from reliable supply, expert advice, and ongoing support. Sales FAQs Q: Do you have the Cummins QSB4.5 150HP inboard marine engine for sale?A: Yes, Bluewake Marine Enterprises offers this engine with worldwide availability and competitive pricing. Q: Does the engine include a manufacturer warranty?A: Yes, it is backed by a Cummins manufacturer warranty, and we assist with registration and support. Q: What gearboxes are compatible with this engine?A: It is compatible with ZF Marine and Twin Disc transmissions, among others, depending on application requirements. Q: Is this engine suitable for repower applications?A: Yes, it is a reliable solution for upgrading older 4-cylinder marine diesel engines. Request a Quote For pricing, availability, and shipping details for the Cummins QSB4.5 150HP inboard marine engine for sale, contact Bluewake Marine Enterprises today. 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