{"id":15951,"date":"2024-10-01T11:51:18","date_gmt":"2024-10-01T10:51:18","guid":{"rendered":"https:\/\/dale-sailing.co.uk\/chandlery\/?post_type=product&#038;p=15951"},"modified":"2024-10-10T10:11:25","modified_gmt":"2024-10-10T09:11:25","slug":"yanmar-4jh45-marine-diesel-engine-45hp","status":"publish","type":"product","link":"https:\/\/dale-sailing.co.uk\/chandlery\/product\/yanmar-4jh45-marine-diesel-engine-45hp\/","title":{"rendered":"Yanmar 4JH45 Marine Diesel Engine &#8211; 45hp"},"content":{"rendered":"<p>The <strong>Yanmar 4JH45 Marine Diesel Engine<\/strong> is a 4-cylinder, 4-stroke common rail (CR) direct injection diesel engine that delivers <strong>45hp at 3000 rpm<\/strong>. As part of the <strong>4JH series<\/strong>, the <strong>4JH45<\/strong> is designed for sailboats, yachts, and light-duty commercial vessels, offering excellent power, fuel efficiency, and low emissions. With its <strong>common rail direct injection<\/strong> system, this engine provides smooth operation, superior fuel efficiency, and low exhaust emissions, making it compliant with the latest global environmental regulations, including <strong>EPA Tier 3<\/strong> and <strong>EU RCD Stage II<\/strong>.<\/p>\n<p>The <strong>4JH45<\/strong> is equipped with a <strong>freshwater cooling system<\/strong> via a heat exchanger, ensuring optimal operating temperatures and preventing corrosion. This engine is compact and lightweight, making it easy to install in most engine compartments. It is known for its <strong>low vibration and quiet performance<\/strong>, contributing to a comfortable onboard experience.<\/p>\n<p><strong>Technical Specifications:<\/strong><\/p>\n<ul>\n<li><strong>Engine Model:<\/strong> 4JH45<\/li>\n<li><strong>Engine Type:<\/strong> 4-cylinder, 4-stroke, vertical water-cooled diesel engine<\/li>\n<li><strong>Displacement:<\/strong> 2.19 litres (2190 cc)<\/li>\n<li><strong>Bore x Stroke:<\/strong> 84 mm x 90 mm<\/li>\n<li><strong>Power Output:<\/strong> 45hp (33.1 kW) at 3000 rpm<\/li>\n<li><strong>Compression Ratio:<\/strong> 18.9:1<\/li>\n<li><strong>Fuel System:<\/strong> Common rail direct injection (CR)<\/li>\n<li><strong>Cooling System:<\/strong> Freshwater cooling with heat exchanger<\/li>\n<li><strong>Alternator Output:<\/strong> 12V &#8211; 125A<\/li>\n<li><strong>Lubrication System:<\/strong> Forced lubrication by gear pump<\/li>\n<li><strong>Oil Capacity:<\/strong> 7.4 litres<\/li>\n<li><strong>Starting System:<\/strong> Electric start<\/li>\n<li><strong>Direction of Rotation:<\/strong> Counterclockwise (viewed from flywheel)<\/li>\n<li><strong>Weight:<\/strong> 192 kg (without gearbox)<\/li>\n<li><strong>Gearbox Options:<\/strong> KM35P, KM4A2 (mechanical or hydraulic)<\/li>\n<li><strong>Reduction Ratios:<\/strong> 2.14:1, 2.61:1 (KM35P) or 2.20:1, 3.12:1 (KM4A2)<\/li>\n<li><strong>Exhaust System:<\/strong> Water-cooled, with wet exhaust manifold<\/li>\n<li><strong>Fuel Consumption:<\/strong> Approx. 7.0 litres\/hour at cruising speed<\/li>\n<li><strong>Emission Compliance:<\/strong> EPA Tier 3, EU RCD Stage II compliant<\/li>\n<\/ul>\n<p><strong>Key Features:<\/strong><\/p>\n<ul>\n<li><strong>Common Rail Direct Injection (CR):<\/strong> Enhances fuel efficiency, reduces emissions, and improves power output.<\/li>\n<li><strong>Compact and Lightweight Design:<\/strong> Ideal for sailboats and yachts with limited engine compartment space.<\/li>\n<li><strong>Freshwater Cooling System:<\/strong> Protects engine from corrosion and maintains optimal operating temperatures.<\/li>\n<li><strong>Low Noise and Vibration:<\/strong> Designed for smooth, quiet operation, enhancing onboard comfort.<\/li>\n<li><strong>Environmentally Friendly:<\/strong> Complies with EPA Tier 3 and EU RCD Stage II regulations, ensuring low emissions.<\/li>\n<li><strong>Fuel Efficiency:<\/strong> Delivers excellent fuel economy, especially during extended cruising.<\/li>\n<\/ul>\n<p><strong>Yanmar<\/strong> is a globally recognised leader in marine diesel engine manufacturing, known for producing reliable, fuel-efficient, and environmentally-friendly engines. The <strong>4JH45<\/strong> is part of Yanmar\u2019s advanced <strong>JH-series<\/strong>, offering modern common rail technology and compliance with strict emissions regulations for sailboats and small vessels.<\/p>\n<p>Yanmar provide several transmission options for various marine applications. The<strong>\u00a0KM35P<\/strong> is a mechanical marine gearbox with hydraulic control, suitable for inboard installations. The<strong>\u00a0KM4A-2<\/strong> is designed specifically for sailboats, featuring a mechanical servo cone clutch and multiple gear ratios for efficient propulsion. The <strong>SD60 SailDrive<\/strong> offers a smooth, low-vibration drive system for sailboats, optimizing performance with specific Yanmar engines. Additionally, <strong>ZF25A<\/strong> is another reliable transmission option for Yanmar engines, known for its durability in demanding marine environments. A <strong>bobtail engine<\/strong> is a fully assembled replacement engine, designed to replace existing engines and their systems, available for stern drive and inboard setups. These come with critical systems such as fuel, electrical, cooling, and exhaust, providing a comprehensive solution for repowering boats.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Yanmar 4JH45 Marine Diesel Engine delivers 45hp with advanced common rail technology, freshwater cooling, and low emissions. Ideal for sailboats and small vessels.<br \/>\nAvailable at Dale Sailing.<\/p>\n<p><a href=\"https:\/\/www.yanmar.com\/marine\/product\/engines\/4jh45\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14968 size-thumbnail\" src=\"https:\/\/dale-sailing.co.uk\/chandlery\/wp-content\/uploads\/2024\/07\/Yanmar-Logo-150x150.png\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><\/p>\n","protected":false},"featured_media":15957,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[2398],"product_tag":[1719],"class_list":["post-15951","product","type-product","status-publish","has-post-thumbnail","product_cat-inboard-engines-engine-propulsion","product_tag-yanmar","first","instock","taxable","shipping-taxable","purchasable","product-type-variable"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Yanmar 4JH45 Marine Diesel Engine - 45hp - Dale Sailing<\/title>\n<meta name=\"description\" content=\"Yanmar 4JH45 Marine Diesel Engine - 45hp, 4-cylinder, common rail direct injection, freshwater-cooled engine. 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