fits model: Rev, Mariner. make: Mercury.

( Manufacturer Part Number: 821889A46 )
The Mercury 821889A46 Mercury/Mariner Limiter is a essential component for any marine engine, designed specifically for use in freshwater environments. This limiter is an essential tool for protecting your engine from excess water ingression, which can cause damage and reduce the overall lifespan of the engine.
The Mercury limiter is made of high-quality materials, including a durable plastic casing and stainless steel components, ensuring long-lasting performance even in the harshest marine environments. It is designed to fit seamlessly into your engine's water pump housing, and is easy to install with included mounting hardware.
The Mercury limiter features a unique, patented design that allows it to automatically close when it detects water ingression, preventing further water from entering the engine. It is also equipped with a pressure relief valve, which releases excess pressure in the pump housing to prevent damage to the engine.
The Mercury 821889A46 Limiter is compatible with a wide range of Mercury and Mariner outboard engines, including 4-stroke and 2-stroke models. It is designed to fit most engine sizes, making it a versatile and convenient solution for boat owners.
In conclusion, the Mercury 821889A46 Mercury/Mariner Limiter is a must-have accessory for any freshwater marine engine. Its durable construction, patented design, and compatibility with a wide range of engines make it a reliable and convenient solution for protecting your engine from water ingression and ensuring long-lasting performance.
Pros of buying a Mercury 821889A46 Mercury/Mariner Limiter Freshwater:1. Reliable brand: Mercury is a well-known and reliable brand in the marine engine industry, which can give you peace of mind when making a purchase.
2. Designed for freshwater: This limiter is specifically designed for freshwater use, which can help prevent damage to the engine in saltwater environments.
3. Easy installation: The Mercury 821889A46 Limiter is easy to install, which can save you time and money on installation costs.
4. Adjustable: The limiter is adjustable, which allows you to customize the maximum RPM of your engine to meet your specific needs.
5. Durable: The Mercury 821889A46 Limiter is built to last, which can help you save money in the long run by reducing the need for replacement parts.
Cons of buying a Mercury 821889A46 Mercury/Mariner Limiter Freshwater:1. Expensive: Compared to some other limiters on the market, the Mercury 821889A46 Limiter can be quite expensive.
2. Limited availability: The Mercury 821889A46 Limiter may not be available in all locations, which can make it difficult to find and purchase.
3. May not be necessary for all engines: If your engine already has a limiter or if you don't need to limit the RPM, then purchasing the Mercury 821889A46 Limiter may not be necessary.
Conclusion:The Mercury 821889A46 Limiter is a high-quality, reliable limiter that is specifically designed for freshwater use. It is easy to install, adjustable, and durable, making it a good investment for those who need to limit the RPM of their engine. However, it is also one of the more expensive limiters on the market, and may not be necessary for all engines. Ultimately, the decision to purchase the Mercury 821889A46 Limiter should be based on your specific needs and budget.
Recommendation:If you need to limit the RPM of your engine and are willing to invest in a high-quality limiter, then the Mercury 821889A46 Limiter is a good option to consider. However, if you are looking for a more affordable option, there are other limiters on the market that may be better suited for your needs. Before making a purchase, make sure to research your options and compare prices to ensure that you are getting the best value for your money.
This was removed from a freshwater motor and comes tested in good working order. This is a good used Rev limiter off of 1999 200 EFI Mercury.