fits model: Xs. make: Mercury. year: 2015.

( Manufacturer Part Number: 858961A35 ), ( Part Type: Block ), ( Color: Black ), ( Country Of Manufacture: United States )
The Mercury 858961A35 Optimax Pro XS 175hp Outboard Engine is a powerful and efficient marine propulsion system designed for serious anglers and boaters. This 2015 model features a 2.5L Direct Fuel Injection (DFI) block, which delivers exceptional fuel efficiency and performance.
The engine is equipped with Mercury's proprietary 175hp Optimax Pro XS four-stroke powerhead, which is known for its reliability and durability. The engine's DFI system delivers precise fuel injection for optimal combustion, resulting in reduced emissions and improved fuel economy. The engine's advanced electronics also include an electronic throttle and shift system (ETHS), which allows for smooth and precise control of the engine's speed and direction.
The Mercury 858961A35 Optimax Pro XS 175hp Outboard Engine is also equipped with a high-performance gearcase, which provides excellent thrust and maneuverability. The engine's gearcase features Mercury's proprietary Power Steer system, which makes it easy to turn and maneuver the boat, even in tight quarters.
The engine's exterior is finished in a sleek and stylish design, with a corrosion-resistant aluminum alloy construction. The engine is also equipped with a high-quality paint finish that is designed to withstand the harsh marine environment.
Overall, the Mercury 858961A35 Optimax Pro XS 175hp Outboard Engine is a top-of-the-line marine propulsion system that delivers exceptional power, efficiency, and reliability. Whether you're fishing, cruising, or just having fun on the water, this engine is sure to provide the power and performance you need to get the most out of your boating experience.
Pros of buying Mercury 858961a35 2015 Optimax Pro XS 175hp 2.5l DFI Block:1. Powerful engine: The 175hp engine provides ample power for water sports and fishing, ensuring a fast and enjoyable experience on the water.
2. Reliability: Mercury is known for its high-quality engines, and the Optimax Pro XS is no exception. It is built to last and is backed by a strong warranty.
3. Fuel efficiency: The engine features Mercury's Dual Fuel Injection (DFI) technology, which improves fuel efficiency and reduces emissions.
4. Versatility: The Optimax Pro XS is suitable for a wide range of watercraft, including boats, jet skis, and personal watercraft.
Cons of buying Mercury 858961a35 2015 Optimax Pro XS 175hp 2.5l DFI Block:1. Price: The Optimax Pro XS is a high-end engine, and it comes with a correspondingly high price tag.
2. Maintenance: Like any engine, the Optimax Pro XS requires regular maintenance to keep it running at its best. This can be time-consuming and expensive.
3. Weight: The engine is relatively heavy, which can impact the performance and fuel efficiency of lighter watercraft.
Conclusion:The Mercury 858961a35 2015 Optimax Pro XS 175hp 2.5l DFI Block is a powerful, reliable, and fuel-efficient engine that is well-suited for water sports and fishing. However, it is also expensive and requires regular maintenance. If you have the budget and are willing to invest in the long-term maintenance of the engine, the Optimax Pro XS is a great choice. If you are looking for a more budget-friendly option, you may want to consider a less powerful engine or a different brand.
Recommendation:If you value power, reliability, and fuel efficiency, and are willing to invest in the long-term maintenance of the engine, the Mercury 858961a35 2015 Optimax Pro XS 175hp 2.5l DFI Block is a great choice for your watercraft. However, if you are on a tighter budget or prefer a lighter engine, you may want to explore other options.
This is a good block to rebuild. This is a 2015 2.5L 175HP Pros block. Comes with the mounting studs and Crankcase bolts. The front half does have damage that is pictured.
The exhaust port has some damage but no punctures through or into the water cavity. All the damage is able to be repaired. 1-5 cylinders a clean and look good. Will need machined off.
Motor had 331 hours when it was disassembled. The number 6 cylinder has very little scaring. There are no holes in the block.