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The beauty of our Selective Catalytic Reduction (SCR) system is that it’s not complicated. It doesn’t affect engine efficiency and durability like other emissions-reduction solutions. There’s no alteration to core engine components and no increase in the injector, in cylinder pressure or in heat rejection. Maintenance is simple, with long life to overhaul, and installation flexes with your vessel design. Best of all, our marine engine Tier 4 Final solution improves fuel efficiency, lowering your costs. Here’s how it works in three simple steps: