{"product_id":"mercury-proxs-300-hp-p300-xl-cxl-v8-cms-4-zamanli-yuksek-performans-uzun-saft-distan-takma-deniz-motoru","title":"Mercury 300 HP ProXS V8 Long Shaft Outboard Motor with Electric Start, Steering, and Trim\/Tilt","description":"\u003cp\u003eThe Mercury \u003cstrong\u003e300 L ProXS V8\u003c\/strong\u003e is a 4-stroke outboard marine engine designed for sport fishing boats, speed-oriented fiberglass boats, and performance-focused users who require a long shaft. It features a 300 HP \/ 224 kW, 4600 cc V8 (8-cylinder) engine. The ProXS series offers optimized high-performance configurations compared to standard FourStroke engines. It is developed for boat usage where speed and responsiveness are prioritized, thanks to its high RPM range and performance-oriented fine-tuning.\u003c\/p\u003e\n\n\u003ch2\u003e300 L ProXS V8 Series Features and Technology Advantages\u003c\/h2\u003e\n\u003cp\u003eProXS models operate at a higher RPM range compared to their standard FourStroke counterparts. Performance-oriented ECU calibration shifts the power band to higher RPMs, increasing responsiveness and top speed.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eV8 (8-Cylinder) Engine (4600 cc):\u003c\/strong\u003e ProXS models operate at a higher RPM range compared to their standard FourStroke counterparts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Shaft (508 mm (20\")):\u003c\/strong\u003e The propeller operates at optimal depth with the correct transom height.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProXS Performance Configuration:\u003c\/strong\u003e Enhanced responsiveness and maximum speed with a high RPM range and optimized ECU calibration.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eElectric Start:\u003c\/strong\u003e Instant activation with key or button — comfortable and quick starting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Trim \u0026amp; Tilt:\u003c\/strong\u003e Adjust trim angle with a button while cruising — optimizes fuel efficiency; full engine lift with tilt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFloat-Type External Fuel System:\u003c\/strong\u003e Connection for a large-capacity external tank — range is determined by user needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eLong Shaft — Which Boat Type Is It Suitable For?\u003c\/h2\u003e\n\u003cp\u003eThe long shaft (508 mm (20\")) is suitable for the vast majority of inflatable boats, aluminum boats, and fiberglass boat models. For boats with a transom height of 381 mm, a short shaft model should be preferred.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300 HP \/ 224 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplacement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4600 cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCylinder Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eV8 (8 Cylinders)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4-stroke, High Performance V8, DOHC, 32 valves, EFI electronic fuel injection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShaft Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLong Shaft \/ 508 mm (20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGear System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eF – N – R (Forward \/ Neutral \/ Reverse)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStarting System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrim System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower Trim \u0026amp; Tilt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExternal float-type system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight (Dry)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e232 KG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTiller (Handle)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Code\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300 L ProXS V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWho Is This Engine For?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSport fishing boats:\u003c\/strong\u003e fast planing and quick positioning with a high RPM range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance-oriented fiberglass boats:\u003c\/strong\u003e increased responsiveness and speed with ProXS calibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTournament fishing:\u003c\/strong\u003e fast relocation and efficient fuel usage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoat owners seeking speed and performance:\u003c\/strong\u003e a superior performance tier compared to standard FourStroke.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eMaintenance and Longevity\u003c\/h2\u003e\n\u003cp\u003e4-stroke Mercury engines operate smoothly for many years with regular oil changes and end-of-season maintenance protocols. The impeller of the water-cooled system should be checked every 100 hours or every two seasons. In saltwater use, freshwater flushing is mandatory after each use.\u003c\/p\u003e\n\u003cp\u003eRelated maintenance categories: \u003ca href=\"\/en-eu\/collections\/bakim-kiti\"\u003eMaintenance Kit\u003c\/a\u003e | \u003ca href=\"\/en-eu\/collections\/motor-yagi\"\u003eEngine Oil\u003c\/a\u003e | \u003ca href=\"\/en-eu\/collections\/impeller\"\u003eImpeller\u003c\/a\u003e | \u003ca href=\"\/en-eu\/collections\/mercury-yedek-parca\"\u003eMercury Spare Parts\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat is the difference between ProXS and standard FourStroke 300 HP?\u003c\/h3\u003e\n\u003cp\u003eProXS models offer the same engine block with a higher RPM range and performance-oriented ECU calibration. Compared to the standard model, it provides a higher maximum RPM, increased responsiveness, and superior top speed performance. Fuel consumption at full throttle positions might be slightly higher.\u003c\/p\u003e\n\n\u003ch3\u003eWhich propeller works best with the ProXS engine?\u003c\/h3\u003e\n\u003cp\u003eSince ProXS models are optimized for a high RPM range, a propeller with less pitch (lower pitch) is generally preferred. Propeller selection should be determined by a Mercury service technician based on boat type, weight, and desired speed-acceleration balance.\u003c\/p\u003e\n\n\u003ch3\u003eAre ProXS maintenance requirements different from standard FourStroke?\u003c\/h3\u003e\n\u003cp\u003eBasic maintenance requirements are similar: regular oil changes, impeller checks, and end-of-season maintenance. However, due to high RPM usage, more attention to oil quality is recommended. Service intervals should be followed according to manufacturer recommendations.\u003c\/p\u003e\n\n\u003ch3\u003eWith which boat and inflatable boat brands is the 300 L ProXS V8 compatible?\u003c\/h3\u003e\n\u003cp\u003eMercury outboard engines are compatible with many fiberglass, aluminum, and inflatable boat models thanks to their universal transom clamp or transom mounting system. The only criteria are your boat's transom height of 508 mm (20\") and the maximum engine power approved by the manufacturer. You can share your boat model to get compatibility confirmation from Clever Marin.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Products and Categories\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-eu\/collections\/mercury-distan-takma-motorlar\"\u003eMercury Outboard Motors\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-eu\/collections\/mercury-urunleri\"\u003eMercury Marine Products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-eu\/collections\/mercury-yedek-parca\"\u003eMercury Spare Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-eu\/collections\/proxs-115-150hp-motorlar\"\u003eMercury ProXS 115–150 HP\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-eu\/collections\/fourstroke-175-300-hp\"\u003eMercury 175–300 HP FourStroke\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-eu\/collections\/distan-takma-motorlar\"\u003eOutboard Motors\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-eu\/collections\/tekne-motorlari\"\u003eBoat Engines\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-eu\/collections\/bakim-kiti\"\u003eMaintenance Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-eu\/collections\/impeller\"\u003eImpeller\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-eu\/collections\/anot\"\u003eAnode\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIs This the Right Configuration for Your Boat?\u003c\/h2\u003e\n\u003cp\u003eShare your boat model, transom height, and intended use — let's confirm together if the Mercury \u003cstrong\u003e300 L ProXS V8\u003c\/strong\u003e engine is suitable for your boat and ensure the correct shaft selection.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46237628203205,"sku":null,"price":1692999.99,"currency_code":"TRY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/9332\/8581\/files\/mercury-proxs-p300-xl-cxl-v8-cms-extra-uzun-saft-distan-takma-deniz-motoru-p300proxs.jpg?v=1765271621","url":"https:\/\/clevermarin.com\/en-eu\/products\/mercury-proxs-300-hp-p300-xl-cxl-v8-cms-4-zamanli-yuksek-performans-uzun-saft-distan-takma-deniz-motoru","provider":"CLEVER MARIN","version":"1.0","type":"link"}