The ECOTEC 1.0L engine (L5Q) is engineered to deliver strong performance with excellent efficiency. The L5Q features an aluminum cylinder block and head that help reduce the vehicle’s overall mass to enhance performance and efficiency, while technologies such as continuously Variable Valve Timing with broad power bands make for an optimal balance of strong performance and low fuel consumption. This is a Brand New 1.0L marine base engine. Available for order now and ready to ship. Please note, these engines are unpainted.

This is a Brand New 3.0L marine base engine. This 3.0L Marine engine is built strictly for marine use. Available for order now.

This is a brand new Authentic General Motors heavy duty marine base engine. This 5.7L Marine engine is built strictly for marine use on GM production lines. The price includes intake manifold gaskets. The 5.7L L31 is the premier industrial workhorse, providing the power needed to get the job done without sacrificing fuel efficiency or durability. Includes: Vortec Engine with High Flow Cylinder Heads, Harmonic Balancer, Oil Pan, and Valve Covers. Replaces MerCruiser: 8M0088397, 866138A03, 807449R5, 807449R50, 863661R5, 8M0124238, 866138R03, 8M0124033, and Volvo Penta 3801527.

This is a brand new Authentic General Motors heavy duty marine base engine. This 5.7L Marine engine is built strictly for marine use on GM production lines. The price includes intake manifold gaskets. The 5.7L L31 is the premier industrial workhorse, providing the power needed to get the job done without sacrificing fuel efficiency or durability. Includes: Vortec Engine with High Flow Cylinder Heads, Harmonic Balancer, Oil Pan, and Valve Covers. Replaces MerCruiser: 8M0088397, 866138A03, 807449R5, 807449R50, 863661R5, 8M0124238, 866138R03, 8M0124033, and Volvo Penta 3801527.

The L87 builds upon the previous 6.2L L86 with integral components for Automatic Start/Stop capability and available Dynamic Fuel Management (DFM) for even greater efficiency. Efficient, robust technologies including Direction Injection, Variable Valve Timing, oil-jet piston cooling, and a two-stage oil pump continue to part of the 6.2L heritage.