Marine Power

Base Engine

[140- HP]
GM Powertrain Logo

Displacement Options: 3.0, 4.3, 5.3, 5.7, 6.2, 7.4

Authentic GM Marine longblock engines manufactured on GM production lines strictly for marine use. Available in both standard and counter rotations in multiple displacements. Serves as the base for all Marine Power engines.

Our base engines are the ideal replacement for your engine if the existing components are still good and can be reused. With the ability to be configured and built up to match any application, our base engines offer ultimate flexibility.

GM Authenticity, outstanding performance, variety, and versatility make our marine base engines the premium longblock replacement option.

New 3.0L GM Marine Long Block Engine

3.0L LONGBLOCK

Part Number: 881301

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Rebuilt 4.3L V6 Long Block [1996-2008]

REBUILT 4.3L V6 LONGBLOCK [1996-2008]

Part Number: 880043

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Rebuilt 4.3L V6 Long Block [2007-2011]

REBUILT 4.3L V6 LONGBLOCK [2007-2011]

Part Number: 880044

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New 5.3L DI L83 Base Engine

5.3L L83 LONGBLOCK

Part Number: 881530

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New 5.7L GM Marine Long Block Engine

5.7L LONGBLOCK

Part Number: 881571

Counter Rotation: 881575

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New 6.2L LS3 GM Marine Long Block Engine

6.2L LS3 LONGBLOCK

Part Number: 881662

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New 6.2 DI L86 Base Engine

6.2L DI L86 LONGBLOCK

Part Number: 881674

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New 6.2L LSA GM Marine Long Block Engine

6.2L LSA LONGBLOCK

Part Number: 881648

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New 7.4L GM Marine Long Block Engine

7.4L LONGBLOCK

Part Number: 881740

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New 7.4L GM Marine Long Block Engine

7.4L HIGH OUTPUT LONGBLOCK

Part Number: 881745

Counter Rotation: 881741

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