Mercruiser 5.7L/350 MPI Horizon Inline Drop-in Engine Package with Closed Cooling

Brand New Quicksiver 5.7L/350 CID MPI Horizon Inline Turn Key Engine w/ Closed Cooling

The 5.7L MPI Horizon (inboard) Turn Key Quicksilver engine package is the perfect repower to replace 5.7L & 6.2L inboard engine models. This engine package is 100% complete and ready to drop in and connect to your transmission. 

This engine will only fit those applications using a down angle transmission. 

3 year warranty through Mercruiser

Specifications

• 5.7L, 350 CID Inboard Down Angle Transmission Engine Only.
• 300 HP @ 4800 RPM. 350 Cubic Inch Fully Dressed Marine Engine.

Engine Features 100% New Quicksilver: Cast Iron Engine Block, Closed Cooled Engine Block & Exhaust Manifolds, Flush System, Special Flame Graphics, Multi‑Port Fuel Injection using Cool fuel II, Dry Joint Exhaust, Roller Camshaft, Quicksilver Cast Iron Cylinder Heads featuring Black‑X Valve Tech, 1.5:1 stamped steel rocker arms, ECM555, Engine Guardian, SmartCraft Ready, Mechanical Throttle and Shift, Premium Dual‑Stage Driveplate, Inboard High‑Mount Starter, and 10‑Pin Harness. Runs on 87 Octane Fuel.

NOTE: Dealer must change driveplate if used with in‑line transmissions

About Mercruiser's Plus Series Engines

The PLUS‑SERIES ENGINES from QUICKSILVER are 100% new construction, and contain all the parts a CRATE ENGINE lacks. These are drop‑in‑ready new marine engines. Based on popular MerCruiser and Mercury Remanufacturing models, these are 100% new engines that are built with marine‑grade engine internals and other NEW marine components. QUICKSILVER PLUS‑SERIES engines are 100% new factory engines for repowering classic boats built before 2008 in California, and prior 2010 for the other 49‑states. Because these are completely new engines and not a major repair assembly, the old engine being replaced is to be returned per EPA 1068.240.

Since the focus of PLUS‑SERIES ENGINES is repower, many parts included in new MerCruiser engines used for new boat construction are not included. Parts such as: transoms, trim pumps, Y‑Pipes, rigging, props, boat harnesses, riser kits, closed cooling kits, steering cylinders, lubes, and many other parts required for a successful repower must all be purchased separately.

Adapting Plus Series engines to specific applications may require some parts to be transferred from the engines coming out of the boat or purchased separately. Examples include:

• Transfer of flywheel housings, couplers, and other hardware to adapt to various makes of drives and transoms
• Changing engine couplers to match specific transmissions, or customer preferences
• Changing engine mounts from front to side, or using solid engine mounts
• Use of various Quicksilver kits to meet customer preferences or the specified installation requirements found in the Repower Reference Manual included with the engine