MERCURY 866576A04 Quicksilver Throttle Body Asy

( Part Type: Throttle ), ( Country Of Origin: United States ), ( Manufacturer Part Number: 866576A04 )

Review MERCURY New Quicksilver Part Throttle Body Asy Complete fits MERCRUISER

The Mercury 866576A04 Throttle Body Assembly for Mercruiser applications is an essential component of your marine engine's fuel delivery system. This throttle body is meticulously engineered to provide reliable and efficient performance, ensuring optimal power output and smooth engine operation.

The Mercury 866576A04 Throttle Body Assembly is designed with a robust construction that can withstand the demanding marine environment. It is manufactured using high-quality materials that resist corrosion and wear, prolonging its lifespan and ensuring dependable performance season after season.

This throttle body assembly includes a throttle plate, idling circuit, and accelerator pump. The throttle plate is adjustable and provides precise control of engine RPMs, ensuring optimal fuel delivery for various engine loads. The idling circuit maintains consistent engine speed during idle conditions, while the accelerator pump delivers additional fuel to the engine during acceleration.

The Mercury 866576A04 Throttle Body Assembly also features an integrated fuel pressure regulator, which maintains the correct fuel pressure for optimal engine performance. It is designed to work seamlessly with other engine components, such as the fuel injectors and intake manifold, to provide efficient and clean combustion.

The Mercury 866657A04 Throttle Body Assembly is easy to install, with clear instructions provided in the packaging. It is compatible with a wide range of Mercury and Mercruiser marine engines, making it a versatile choice for boat owners and operators.

In summary, the Mercury 866576A04 Throttle Body Assembly for Mercruiser applications is a critical engine component that ensures reliable and efficient performance. Its robust construction, precise control of engine RPMs, and integrated fuel pressure regulator make it an essential addition to your marine engine, providing you with the power and smooth operation you need to enjoy your time on the water.

The Mercury 866576A04 Mercruiser QuickSilver Throttle Body is a crucial component of your marine engine's fuel delivery system. Replacing a worn-out or faulty throttle body can improve engine performance, increase fuel efficiency, and prevent potential engine damage. Here are some pros and cons of buying this Mercury part to help you make an informed decision.

1. Improved Engine Performance: A new throttle body can help your engine run smoother and more efficiently by ensuring proper fuel delivery and air-fuel mixture.

2. Better Fuel Economy: By optimizing the fuel delivery system, a new throttle body can help improve your boat's fuel economy, saving you money on fuel costs over time.

3. Enhanced Safety: A faulty throttle body can cause various engine issues, including stalling or poor acceleration, which can be dangerous while operating a boat. Replacing a worn-out throttle body can help ensure your engine runs safely and reliably.

4. Long-Term Value: A high-quality throttle body, like the Mercury 866576A04, can last for many years with proper maintenance, making it a worthwhile investment for boat owners.

1. Cost: Replacing a throttle body can be an expensive repair, especially if you are not doing it yourself. The cost of the part, labor, and any additional tools or materials can add up.

2. Installation Complexity: Installing a throttle body can be a complex process, requiring specialized knowledge and tools. If you are not confident in your ability to install the part yourself, it may be best to hire a professional.

3. Potential for Additional Repairs: Replacing a throttle body may uncover other issues within the engine or fuel delivery system, requiring additional repairs and increasing the overall cost of the repair.

The Mercury 866576A04 Mercruiser QuickSilver Throttle Body is an essential component of your marine engine's fuel delivery system. While the cost and installation complexity may be drawbacks, the improved engine performance, better fuel economy, and enhanced safety make this an investment worth considering for boat owners.

If you are experiencing engine issues or are due for a routine maintenance check, consider replacing your old throttle body with a new Mercury 866576A04. Investing in a high-quality throttle body can help ensure your engine runs smoothly, efficiently, and safely for years to come. However, if you are not confident in your ability to install the part yourself, be sure to hire a professional to ensure the job is done correctly.

part # 866576a04 prices

• $549.99-$899.97

specifications dorycontrol:

• for models: Mercruiser
• for makes: Mercury
• part type: Throttle
• country of origin: United States
• manufacturer part number: 866576A04

returns dorycontrol:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

payments dorycontrol:

• wallet: Google-pay
• other
• credit card: Mastercard

general dorycontrol:

• condition: New
• Parts Accessories > Boat Parts > Controls Steering

offer dorycontrol:

• quantity: 1
• options: Ship-to-home
• sold: 0
• started: February 27, 2026
• availability: In Stock

seller dorycontrol:

• # reviews: 257
• rating: 100.0%

shipping dorycontrol:

• service: FedEx Ground Economy, FedEx Ground / FedEx Home Delivery
• transit: 5-11 Days
• cost: $31.72
• type: Calculated
• class: Economy, Standard
• carrier: FedEx

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