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Remanufactured Marine Engines

  • Sale
    7.4L (454 ci) Marine Engine MK4 (1978-1990) 7.4L (454 ci) Marine Engine MK4 (1978-1990) 7.4L (454 ci) Marine Engine MK4 (1978-1990) 7.4L (454 ci) Marine Engine MK4 (1978-1990) 7.4L (454 ci) Marine Engine MK4 (1978-1990)

    Michigan Motorz Reman

    7.4L (454 ci) Marine Engine MK4 (1978-1990)

    This 7.4L (454ci) Mark Four (MK4) marine engine (1978-1990) has been professionally remanufactured to meet or exceed GM OEM marine engine stock specifications. It is a standard rotation GM marine...

    Was: $7,479.00
    Now: $6,049.00
  • Sale
    7.4L (454 ci) Marine Engine (1991-95) 7.4L (454 ci) Marine Engine (1991-95) 7.4L (454 ci) Marine Engine (1991-95) 7.4L (454 ci) Marine Engine (1991-95) 7.4L (454 ci) Marine Engine (1991-95)

    Michigan Motorz Reman

    7.4L (454 ci) Marine Engine (1991-95)

    This 7.4L (454ci) Gen 5 marine engine (1991-1995) has been professionally remanufactured to meet or exceed GM OEM marine engine stock specifications. It is a standard rotation GM marine engine and a...

    Was: $7,899.00
    Now: $6,199.00
  • Sale
    7.4L (454 ci) HO Marine Engine (1996-2002) 7.4L (454 ci) HO Marine Engine (1996-2002) 7.4L (454 ci) HO Marine Engine (1996-2002) 7.4L (454 ci) HO Marine Engine (1996-2002) 7.4L (454 ci) HO Marine Engine (1996-2002)

    Michigan Motorz Reman

    7.4L (454 ci) HO Marine Engine (1996-2002)

    This 7.4L (454ci) Generation Six HIGH OUTPUT (HO) marine engine (1997-2002) has been professionally remanufactured to meet or exceed GM OEM marine engine stock specificati

    Was: $12,099.00
    Now: $9,989.00
  • Sale
    8.1L Marine Engine  (2001-2020) 8.1L Marine Engine  (2001-2020) 8.1L Marine Engine  (2001-2020) 8.1L Marine Engine  (2001-2020) 8.1L Marine Engine  (2001-2020)

    Michigan Motorz Reman

    8.1L Marine Engine (2001-2020)

    8.1L (496ci) (Standard Output or High Output) marine engine (one-piece rear main seal, roller cam & roller lifters). This motor has been professionally remanufactured to meet or exceed GM OEM marine...

    Was: $8,939.00
    Now: $7,599.00

At Michigan Motorz, we carefully select only the most premium, low-hour engines to professionally remanufacture. These engines all undergo a 15-point inspection to insure quality, reliability and durability.

To give you an idea of all that goes into a Michigan Motorz remanufactured engine… the engine block and cylinder heads are completely disassembled, baked and blasted, checked again for cracks (magnafluxed), then reassembled using only the finest components. The engine block is always decked to insure proper sealing with the cylinder heads. The crank is either turned, polished or replaced, new Federal Mogul teflon-coated hypereutectic pistons (standard to .030 over) are installed, new or remanufactured rods, new Melling oil pump and timing set, new Hastings rings, new brass freeze plugs, new marine roller cam shaft and roller lifters (in applicable applications), new Durabond main bearings, cam bearings and rod bearings are used in all engines.

Cylinder heads are 3-angle cut for proper seating, and all of our heads are resurfaced and not milled. Before shipping out each Michigan Motorz remanufactured engine, we pressure check, spin test and compression test the engine to ensure 100% quality and reliability.

Most Michigan Motorz remanufactured engines come with the valve covers, marine oil pan, circulation pump and timing cover installed, unless otherwise specified.

For more information, call us at: (248) 524-9600