fits model: Mercruiser. year: 1970–1972.

( Brand: Quicksilver ), ( Manufacturer Part Number: 57790A2 ), ( Part Type: Valve Hp Check )
The Mercruiser 90 HP Check Valve Kit (21-57790A2) is a crucial component for maintaining the proper functioning of your marine engine. This quicksilver check valve kit is specifically designed for Mercruiser engines manufactured between 1970 and 1972.
The kit includes two check valves, part numbers 21-57790-01 and 21-57790-02, which are crucial for preventing backflow in the engine cooling system. The check valves ensure that cooling water flows in the correct direction, protecting your engine from damage caused by water flowing backwards.
The valves are made from high-quality materials, ensuring durability and longevity. They are designed to withstand the harsh marine environment, resisting corrosion and wear. The kit also includes mounting hardware, making installation a straightforward process for DIY enthusiasts or professional mechanics.
The Mercruiser 90 HP Check Valve Kit (21-57790A2) is a vital replacement part for any Mercruiser engine owner. It ensures the reliable operation of your engine, preventing costly damage and maintaining the overall performance of your marine vehicle. This quicksilver kit is a smart investment for any boat owner, providing peace of mind and ensuring your engine runs smoothly and efficiently.
Pros of buying a Mercruiser 21-57790A2 check valve kit:1. Compatibility: This kit is specifically designed for Mercruiser 90 HP engines from 1970 to 1972, ensuring a perfect fit.
2. Quality: The kit is manufactured by Quicksilver, a reputable brand known for producing high-quality marine parts.
3. Easy Installation: The kit includes all necessary components and clear instructions, making it relatively easy to install.
4. Warranty: Most Quicksilver products come with a limited warranty, protecting you against manufacturing defects.
Cons of buying a Mercruiser 21-57790A2 check valve kit:1. Cost: The kit might be more expensive than some aftermarket alternatives.
2. Availability: Due to its specificity, this kit might not be as readily available in all retailers or online stores.
3. Limited Longevity: While Quicksilver products are generally reliable, check valves might need replacement after a certain period due to constant use in a marine environment.
Conclusion:If you own a Mercruiser 90 HP engine from 1970 to 1972 and need a replacement check valve kit, the 21-57790A2 by Quicksilver is an excellent choice due to its compatibility and quality. Although it might be more expensive than some alternatives, the ease of installation, reliability, and warranty coverage often outweigh the cost. However, before purchasing, make sure to check with multiple retailers to ensure the best price and availability.
This water distribution check valve is for 90 hp Mercruiser stern drive motors. Fits the following: 90 stern drive thru Mercruiser Renault 96 I l4 cat-t251e. This is a new mercury Quicksilver part.