Mercury-Mercruiser 8M0130012 8.1 Inboard Engine

8.1L Down‑Angle Inboard Engine Only. 370 HP @ 4600 RPM. 8.1L Fully Dressed Marine Engine.

Engine Features 100% new Quicksilver: Heavy Duty Iron Block with Splayed 4‑bolt Main Bearing Caps, Priority Main Oiling System, 8.6:1 Hypereutectic Pistons, Roller Camshaft, 1.7:1 Rocker Arms, Forged Steel
Crankshaft, Quicksilver Iron Cylinder Heads featuring Black‑X Valve Tech, Multi‑Port Fuel Injection using Cool Fuel 3, Closed Cooling, Dry Joint Exhaust, 316 Stainless Steel Exhaust Elbows, +2" Risers standard, PCM 555, Engine Guardian, SmartCraft Ready, Mechanical Throttle and Shift, Serpentine Accessory Drive, Oil
Cooler, Inboard High‑Mount Starter, 14‑Pin Harness. Runs on 87 octane Fuel.

NOTE: Engine is not equipped with a decorative plastic engine cover. An old cover can be transferred from an older engine or simply left off.

NOTE: Because this is a completely new engine and not a major repower assembly, the old engine being replaced is to be returned per EPA 1068.240. We make it easy. We will ship it back to the factory for you. 

Replaces all makes of big block & LS inboard engines: 6.0L, 6.2L, 7.4L, 454, 8.1L & 502

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 your preferences or the specified installation requirements found in the Repower Reference Manual included with the engine