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NEW Base Marine Engines

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  • 7.4L (HO) Marine Engine  (385 HP) 7.4L (HO) Marine Engine  (385 HP) 7.4L (HO) Marine Engine  (385 HP) 7.4L (HO) Marine Engine  (385 HP) 7.4L (HO) Marine Engine  (385 HP)

    GM Marine

    7.4L (HO) Marine Engine (385 HP)

    BRAND NEW 7.4L HI OUTPUT base marine engine (standard rotation) made for 1991-2002 marine engine applications. Engine includes 7.4L High output engine block, rectangular port cylinder heads, valve covers, forged steel crankshaft, high performance cam...

    $13,978.00
  • Sale
    8.1L (496ci) Bare Block NEW 8.1L (496ci) Bare Block NEW 8.1L (496ci) Bare Block NEW 8.1L (496ci) Bare Block NEW 8.1L (496ci) Bare Block NEW

    GM Marine

    8.1L (496ci) Bare Block NEW

    GM BARE BLOCK - 8.1L (496ci) NEWGM Marine engines are at the top of their class thanks to their great performance and durability. GM Marine puts the same advanced technology from their automobiles into their marine engines. This NEW 8.1L bare block is...

    Was: $5,369.00
    Now: $3,199.00
  • Sale
    8.1L MerCruiser Base Marine Engine 8.1L MerCruiser Base Marine Engine 8.1L MerCruiser Base Marine Engine 8.1L MerCruiser Base Marine Engine

    MerCruiser

    8.1L MerCruiser Base Marine Engine

    NEW 8.1L base marine engine features: New 8.1L (496 ci) Marine Engine Standard Rotation Rated 370-375HP OR 420-425 HP with upgraded cam shaft Heavy duty iron block with splayed 4-Bolt main bearing caps 8.6:1 hypereutectic pistons Roller camshaft 1.7:1...

    Was: $21,379.00
    Now: $18,499.00
  • Mercruiser 8.2L Longblock Mercruiser 8.2L Longblock Mercruiser 8.2L Longblock Mercruiser 8.2L Longblock Mercruiser 8.2L Longblock

    GM Marine

    Mercruiser 8.2L Longblock

    MerCruiser 8.2L (502 ci) NEW Longblock – GEN VI Direct Replacement for 2010-2025 MerCruiser 8.2L Engines This factory-assembled NEW Mercury Marine 8 cylinder, 8.2-liter (502 ci) GEN-VI V8 longblock is a premium replacement engine designed to meet...

    $18,987.14
  • 8.2L (502ci) Base Marine Engine (425 HP) 8.2L (502ci) Base Marine Engine (425 HP) 8.2L (502ci) Base Marine Engine (425 HP) 8.2L (502ci) Base Marine Engine (425 HP) 8.2L (502ci) Base Marine Engine (425 HP)

    GM Marine

    8.2L (502ci) Base Marine Engine (425 HP)

    BRAND NEW 502ci base marine engine (standard rotation) made for 1991-2002 marine engine applications. Engine includes block, 8.2L (502ci) rectangular port cylinder heads, valve covers, forged steel crankshaft, high performance cam shaft, 8 quart marine...

    $12,399.00
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The GM base marine engines that Michigan Motorz offers are the EXACT engines that MerCruiser, Volvo Penta, Malibu, Marine Power, Crusader, Indmar, etc., purchase directly from GM Marine Powertrain.

Genuine base marine engines are marinized by GM Marine Powertrain and frequently include the marine oil pan, valve covers, circulation pump, harmonic balancer, cylinder heads and all internal parts, including marine specific parts. OEM's (MerCruiser, Volvo Penta, Marine Power, etc.) purchase these engines from GM and install their own unique accessories (such as exhaust manifolds, ignition systems, etc.), thereby creating their own private label marine engine.