{"id":3623,"date":"2026-09-08T09:34:10","date_gmt":"2026-09-08T09:34:10","guid":{"rendered":"https:\/\/passionwebs.com\/elite-engines\/product\/mercruiser-350-mpi-alpha-bravo-300-hp-8m0136293-2\/"},"modified":"2026-09-08T09:34:10","modified_gmt":"2026-09-08T09:34:10","slug":"mercruiser-350-mpi-alpha-bravo-300-hp-8m0136293-2","status":"publish","type":"product","link":"https:\/\/passionwebs.com\/elite-engines\/product\/mercruiser-350-mpi-alpha-bravo-300-hp-8m0136293-2\/","title":{"rendered":"MerCruiser 350 MPI ALPHA BRAVO 300 HP (8M0136293)"},"content":{"rendered":"<h2>Description<\/h2>\n<h2 data-start=\"0\" data-end=\"91\">MerCruiser 350 MPI ALPHA BRAVO 300 HP (8M0136293) \u2013 High-Performance Inboard Engine<\/h2>\n<p data-start=\"172\" data-end=\"577\">The MerCruiser 350 MPI ALPHA\/BRAVO 300 HP (8M0136293) is a fully dressed, high-performance marine engine designed to deliver exceptional power, efficiency, and durability. Featuring Multi-Port Fuel Injection (MPI) with Cool Fuel II, this engine provides 300 horsepower at 5000 RPM, making it an ideal upgrade for boaters looking to enhance performance, fuel economy, and reliability.<\/p>\n<p data-start=\"579\" data-end=\"926\">This <a href=\"https:\/\/seawavemarine.de\/product-category\/inboard-engines\/mercruiser-engines\/\" target=\"_blank\" rel=\"noopener\">MerCruiser inboard motor<\/a> is built with 100% new Quicksilver components, including a cast iron engine block, SmartCraft-ready ECM555 system, Engine Guardian protection, and Dry Joint Exhaust. It is an excellent repower solution for boats previously powered by 5.0 EFI, 5.0L MPI, 5.7L EFI, and 350 MPI sterndrive Alpha models.<\/p>\n<h2 data-start=\"933\" data-end=\"965\">Key Features &amp; Benefits<\/h2>\n<h3 data-start=\"967\" data-end=\"1006\">Superior Power &amp; Acceleration<\/h3>\n<ul data-start=\"1007\" data-end=\"1389\">\n<li data-start=\"1007\" data-end=\"1091\">300 HP @ 5000 RPM \u2013 Provides smooth acceleration and high torque output.<\/li>\n<li data-start=\"1092\" data-end=\"1229\">350 Cubic Inch Displacement \u2013 An ideal upgrade over older inboard boat motors for better performance and fuel efficiency.<\/li>\n<li data-start=\"1230\" data-end=\"1389\">Multi-Port Fuel Injection (MPI) with Cool Fuel II \u2013 Optimizes fuel delivery for better power output, cleaner emissions, and increased fuel economy.<\/li>\n<\/ul>\n<h3 data-start=\"1391\" data-end=\"1440\">Durable &amp; Marine-Optimized Construction<\/h3>\n<ul data-start=\"1441\" data-end=\"1851\">\n<li data-start=\"1441\" data-end=\"1568\">100% New Quicksilver Cast Iron Engine Block \u2013 Engineered for long-lasting performance in harsh marine environments.<\/li>\n<li data-start=\"1569\" data-end=\"1703\">Raw Water Cooling System with Warm Exhaust Manifolds \u2013 Ensures efficient temperature control for extended engine lifespan.<\/li>\n<li data-start=\"1704\" data-end=\"1851\">Dry Joint Exhaust \u2013 Designed to reduce corrosion and improve engine durability, making it perfect for saltwater and freshwater use.<\/li>\n<\/ul>\n<h3 data-start=\"1853\" data-end=\"1897\">Fuel Efficiency &amp; Smart Monitoring<\/h3>\n<ul data-start=\"1898\" data-end=\"2301\">\n<li data-start=\"1898\" data-end=\"2045\">ECM555 Engine Management System with Engine Guardian \u2013 Provides real-time monitoring and protection to prevent potential engine damage.<\/li>\n<li data-start=\"2046\" data-end=\"2215\">SmartCraft Ready \u2013 Fully compatible with SmartCraft digital gauges and diagnostics, allowing for precise performance tracking and fuel efficiency monitoring.<\/li>\n<li data-start=\"2216\" data-end=\"2301\">Runs on 87 Octane Fuel \u2013 Delivers cost-effective and efficient operation.<\/li>\n<\/ul>\n<h3 data-start=\"2303\" data-end=\"2350\">Seamless Installation &amp; Compatibility<\/h3>\n<ul data-start=\"2351\" data-end=\"2812\">\n<li data-start=\"2351\" data-end=\"2458\">1.5:1 Stamped Rocker Arms &amp; Roller Camshaft \u2013 Ensures smooth operation and improved efficiency.<\/li>\n<li data-start=\"2459\" data-end=\"2593\">Mechanical Throttle &amp; Shift with 10-Pin Harness \u2013 Designed for easy installation and compatibility with existing controls.<\/li>\n<li data-start=\"2594\" data-end=\"2812\">Compatible with Alpha One (Gen I) Drive \u2013 If used with Alpha One (Gen I) drive, this engine requires Seawater Pump Kit 46-8M0139983 and Serpentine Belt 57-865615Q03 (sold separately) for proper cooling.<\/li>\n<\/ul>\n<h2 data-start=\"2819\" data-end=\"2852\">Technical Specifications<\/h2>\n<table data-start=\"2854\" data-end=\"3602\">\n<thead data-start=\"2854\" data-end=\"2891\">\n<tr data-start=\"2854\" data-end=\"2891\">\n<th data-start=\"2854\" data-end=\"2874\">Specification<\/th>\n<th data-start=\"2874\" data-end=\"2891\">Details<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"2928\" data-end=\"3602\">\n<tr data-start=\"2928\" data-end=\"2970\">\n<td>Power Output<\/td>\n<td>300 HP @ 5000 RPM<\/td>\n<\/tr>\n<tr data-start=\"2971\" data-end=\"3005\">\n<td>Displacement<\/td>\n<td>350 cu in<\/td>\n<\/tr>\n<tr data-start=\"3006\" data-end=\"3046\">\n<td>Engine Type<\/td>\n<td>V8 Marine Engine<\/td>\n<\/tr>\n<tr data-start=\"3047\" data-end=\"3120\">\n<td>Fuel System<\/td>\n<td>Multi-Port Fuel Injection (MPI) with Cool Fuel II<\/td>\n<\/tr>\n<tr data-start=\"3121\" data-end=\"3159\">\n<td>Compression Ratio<\/td>\n<td>Standard<\/td>\n<\/tr>\n<tr data-start=\"3160\" data-end=\"3211\">\n<td>Crankshaft Material<\/td>\n<td>High-Strength Steel<\/td>\n<\/tr>\n<tr data-start=\"3212\" data-end=\"3253\">\n<td>Camshaft Type<\/td>\n<td>Roller Camshaft<\/td>\n<\/tr>\n<tr data-start=\"3254\" data-end=\"3326\">\n<td>Cylinder Heads<\/td>\n<td>Quicksilver Cast Iron with Black-X Valve Tech<\/td>\n<\/tr>\n<tr data-start=\"3327\" data-end=\"3391\">\n<td>Ignition System<\/td>\n<td>ECM555 with SmartCraft Compatibility<\/td>\n<\/tr>\n<tr data-start=\"3392\" data-end=\"3464\">\n<td>Cooling System<\/td>\n<td>Raw Water Cooling with Warm Exhaust Manifolds<\/td>\n<\/tr>\n<tr data-start=\"3465\" data-end=\"3509\">\n<td>Exhaust System<\/td>\n<td>Dry Joint Exhaust<\/td>\n<\/tr>\n<tr data-start=\"3510\" data-end=\"3563\">\n<td>Starter &amp; Harness<\/td>\n<td>10-Pin Harness Included<\/td>\n<\/tr>\n<tr data-start=\"3564\" data-end=\"3602\">\n<td>Recommended Fuel<\/td>\n<td>87 Octane<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 data-start=\"3609\" data-end=\"3671\">Why Choose the MerCruiser 350 MPI ALPHA BRAVO 300 HP?<\/h2>\n<ul data-start=\"3672\" data-end=\"4263\">\n<li data-start=\"3672\" data-end=\"3792\">Perfect for Repowering \u2013 Directly replaces 5.0 EFI, 5.0L MPI, 5.7L EFI, and 350 MPI sterndrive Alpha models.<\/li>\n<li data-start=\"3793\" data-end=\"3887\">Smooth &amp; Efficient Acceleration \u2013 Optimized for strong torque and fuel efficiency.<\/li>\n<li data-start=\"3888\" data-end=\"3986\">SmartCraft Digital Integration \u2013 Provides real-time engine monitoring and diagnostics.<\/li>\n<li data-start=\"3987\" data-end=\"4106\">Durable &amp; Corrosion-Resistant \u2013 Designed with marine-grade materials for longevity in all water conditions.<\/li>\n<li data-start=\"4107\" data-end=\"4263\">Seamless Compatibility \u2013 Works with both Alpha and Bravo sterndrives, with optional components available for Alpha One (Gen I) installation.<\/li>\n<\/ul>\n<h2 data-start=\"4270\" data-end=\"4297\">Warranty &amp; Support<\/h2>\n<p data-start=\"4298\" data-end=\"4496\">The <a href=\"https:\/\/www.mercurymarine.com\/us\/en\/engines\/sterndrives-and-inboards\/mercruiser-sterndrives-and-inboards\" target=\"_blank\" rel=\"noopener\">MerCruiser<\/a> 350 MPI ALPHA\/BRAVO 300 HP (8M0136293) comes with a 3-Year Limited Factory Warranty, ensuring protection against manufacturing defects and providing long-term peace of mind.<\/p>\n<h3 data-start=\"4498\" data-end=\"4541\">Frequently Asked Questions (FAQs)<\/h3>\n<p data-start=\"4543\" data-end=\"4767\">What boats are compatible with this engine?<br data-start=\"4590\" data-end=\"4593\">This engine is an ideal repower option for boats using 5.0 EFI, 5.0L MPI, 5.7L EFI, and 350 MPI sterndrive Alpha models, making it a versatile and powerful upgrade.<\/p>\n<p data-start=\"4769\" data-end=\"4969\">Is this engine suitable for saltwater use?<br data-start=\"4815\" data-end=\"4818\">Yes, it is built with marine-grade corrosion-resistant components, ensuring reliable operation in both freshwater and saltwater environments.<\/p>\n<p data-start=\"4971\" data-end=\"5130\">What type of fuel does this engine require?<br data-start=\"5018\" data-end=\"5021\">This engine is optimized to run on 87 Octane fuel, offering cost-effective and efficient operation.<\/p>\n<p data-start=\"5132\" data-end=\"5339\">Does the price include installation?<br data-start=\"5172\" data-end=\"5175\">No, the price is for the engine only. However, <a href=\"https:\/\/seawavemarine.de\/\" target=\"_blank\" rel=\"noopener\">Seawave Marine<\/a> provides installation guidance and expert recommendations for professional marine mechanics.<\/p>\n<p data-start=\"5341\" data-end=\"5557\">Can I install this engine myself?<br data-start=\"5378\" data-end=\"5381\">While some experienced boat owners may choose to install it themselves, professional installation is recommended to ensure proper alignment, cooling, and performance.<\/p>\n<p data-start=\"5559\" data-end=\"5810\">Why is my old engine required for return?<br data-start=\"5604\" data-end=\"5607\">Since this is a completely new engine and not a major repower assembly, the old engine being replaced must be returned per EPA Rule 1068.240, ensuring compliance with environmental regulations.<\/p>\n<p data-start=\"5812\" data-end=\"5984\">What additional parts are needed if using this engine with an Alpha One (Gen I) drive?<br data-start=\"5902\" data-end=\"5905\">If installing this engine with an Alpha One (Gen I) drive, you will need:<\/p>\n<ul data-start=\"5985\" data-end=\"6160\">\n<li data-start=\"5985\" data-end=\"6025\">Seawater Pump Kit (46-8M0139983)<\/li>\n<li data-start=\"6026\" data-end=\"6160\">Serpentine Belt (57-865615Q03)<br data-start=\"6062\" data-end=\"6065\">These components are sold separately and are required for proper cooling system function.<\/li>\n<\/ul>\n<h2 data-start=\"6167\" data-end=\"6230\">Order Your MerCruiser 350 MPI ALPHA BRAVO 300 HP Today<\/h2>\n<p data-start=\"6231\" data-end=\"6519\">Upgrade your boat with the most advanced, fuel-efficient, and reliable inboard marine engine available. The MerCruiser 350 MPI ALPHA\/BRAVO 300 HP delivers exceptional performance, fuel efficiency, and durability, making it the perfect choice for boaters who demand the best.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Description MerCruiser 350 MPI ALPHA BRAVO 300 HP (8M0136293) \u2013 High-Performance Inboard Engine The MerCruiser 350 MPI ALPHA\/BRAVO 300 HP (8M0136293) is a fully dressed, high-performance marine engine designed to deliver exceptional power, efficiency, and durability. Featuring Multi-Port Fuel Injection (MPI) with Cool Fuel II, this engine provides 300 horsepower at 5000 RPM, making it an ideal upgrade for boaters looking to enhance performance, fuel economy, and reliability. This MerCruiser inboard motor is built with 100% new Quicksilver components, including a cast iron engine block, SmartCraft-ready ECM555 system, Engine Guardian protection, and Dry Joint Exhaust. It is an excellent repower solution for boats previously powered by 5.0 EFI, 5.0L MPI, 5.7L EFI, and 350 MPI sterndrive Alpha models. Key Features &amp; Benefits Superior Power &amp; Acceleration 300 HP @ 5000 RPM \u2013 Provides smooth acceleration and high torque output. 350 Cubic Inch Displacement \u2013 An ideal upgrade over older inboard boat motors for better performance and fuel efficiency. Multi-Port Fuel Injection (MPI) with Cool Fuel II \u2013 Optimizes fuel delivery for better power output, cleaner emissions, and increased fuel economy. Durable &amp; Marine-Optimized Construction 100% New Quicksilver Cast Iron Engine Block \u2013 Engineered for long-lasting performance in harsh marine environments. Raw Water Cooling System with Warm Exhaust Manifolds \u2013 Ensures efficient temperature control for extended engine lifespan. Dry Joint Exhaust \u2013 Designed to reduce corrosion and improve engine durability, making it perfect for saltwater and freshwater use. Fuel Efficiency &amp; Smart Monitoring ECM555 Engine Management System with Engine Guardian \u2013 Provides real-time monitoring and protection to prevent potential engine damage. SmartCraft Ready \u2013 Fully compatible with SmartCraft digital gauges and diagnostics, allowing for precise performance tracking and fuel efficiency monitoring. Runs on 87 Octane Fuel \u2013 Delivers cost-effective and efficient operation. Seamless Installation &amp; Compatibility 1.5:1 Stamped Rocker Arms &amp; Roller Camshaft \u2013 Ensures smooth operation and improved efficiency. Mechanical Throttle &amp; Shift with 10-Pin Harness \u2013 Designed for easy installation and compatibility with existing controls. Compatible with Alpha One (Gen I) Drive \u2013 If used with Alpha One (Gen I) drive, this engine requires Seawater Pump Kit 46-8M0139983 and Serpentine Belt 57-865615Q03 (sold separately) for proper cooling. Technical Specifications Specification Details Power Output 300 HP @ 5000 RPM Displacement 350 cu in Engine Type V8 Marine Engine Fuel System Multi-Port Fuel Injection (MPI) with Cool Fuel II Compression Ratio Standard Crankshaft Material High-Strength Steel Camshaft Type Roller Camshaft Cylinder Heads Quicksilver Cast Iron with Black-X Valve Tech Ignition System ECM555 with SmartCraft Compatibility Cooling System Raw Water Cooling with Warm Exhaust Manifolds Exhaust System Dry Joint Exhaust Starter &amp; Harness 10-Pin Harness Included Recommended Fuel 87 Octane Why Choose the MerCruiser 350 MPI ALPHA BRAVO 300 HP? Perfect for Repowering \u2013 Directly replaces 5.0 EFI, 5.0L MPI, 5.7L EFI, and 350 MPI sterndrive Alpha models. Smooth &amp; Efficient Acceleration \u2013 Optimized for strong torque and fuel efficiency. SmartCraft Digital Integration \u2013 Provides real-time engine monitoring and diagnostics. Durable &amp; Corrosion-Resistant \u2013 Designed with marine-grade materials for longevity in all water conditions. Seamless Compatibility \u2013 Works with both Alpha and Bravo sterndrives, with optional components available for Alpha One (Gen I) installation. Warranty &amp; Support The MerCruiser 350 MPI ALPHA\/BRAVO 300 HP (8M0136293) comes with a 3-Year Limited Factory Warranty, ensuring protection against manufacturing defects and providing long-term peace of mind. Frequently Asked Questions (FAQs) What boats are compatible with this engine?This engine is an ideal repower option for boats using 5.0 EFI, 5.0L MPI, 5.7L EFI, and 350 MPI sterndrive Alpha models, making it a versatile and powerful upgrade. Is this engine suitable for saltwater use?Yes, it is built with marine-grade corrosion-resistant components, ensuring reliable operation in both freshwater and saltwater environments. What type of fuel does this engine require?This engine is optimized to run on 87 Octane fuel, offering cost-effective and efficient operation. Does the price include installation?No, the price is for the engine only. However, Seawave Marine provides installation guidance and expert recommendations for professional marine mechanics. Can I install this engine myself?While some experienced boat owners may choose to install it themselves, professional installation is recommended to ensure proper alignment, cooling, and performance. Why is my old engine required for return?Since this is a completely new engine and not a major repower assembly, the old engine being replaced must be returned per EPA Rule 1068.240, ensuring compliance with environmental regulations. What additional parts are needed if using this engine with an Alpha One (Gen I) drive?If installing this engine with an Alpha One (Gen I) drive, you will need: Seawater Pump Kit (46-8M0139983) Serpentine Belt (57-865615Q03)These components are sold separately and are required for proper cooling system function. Order Your MerCruiser 350 MPI ALPHA BRAVO 300 HP Today Upgrade your boat with the most advanced, fuel-efficient, and reliable inboard marine engine available. The MerCruiser 350 MPI ALPHA\/BRAVO 300 HP delivers exceptional performance, fuel efficiency, and durability, making it the perfect choice for boaters who demand the best.<\/p>\n","protected":false},"featured_media":3607,"comment_status":"open","ping_status":"closed","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":[30],"product_tag":[],"class_list":["post-3623","product","type-product","status-publish","has-post-thumbnail","product_cat-mercruiser-marine-engines","desktop-align-left","tablet-align-left","mobile-align-left","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product\/3623","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=3623"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/media\/3607"}],"wp:attachment":[{"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/media?parent=3623"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product_brand?post=3623"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product_cat?post=3623"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product_tag?post=3623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}