MERCURY 831978 Spark Arm Throttle Cam 831977 25HP

( Manufacturer Part Number: 831978 ), ( Part Type: Spark Arm Throttle Cam )

Review MERCURY Spark Arm Throttle Cam 25hp fits MARINE

Mercury 831978 Marine Spark Plug and 831977 Throttle Cam Kit for 25HP Outboard Motors

Experience unparalleled performance and reliability with the Mercury 831978 Marine Spark Plug and 831977 Throttle Cam Kit, specifically designed for 25HP outboard motors. This precision-engineered duo, crafted by the renowned Mercury Marine, is an essential upgrade for your engine, ensuring optimal power delivery and extended lifespan.

The Mercury 831978 Marine Spark Plug, with its robust construction and exacting specifications, guarantees efficient combustion for a more potent and consistent engine response. It features a high-temperature nickel-silicon center electrode for enhanced durability and improved spark performance, even under the most challenging conditions. The plug is also equipped with a copper ground electrode, providing excellent conductivity and heat dissipation to protect against pre-ignition and engine knock.

The Mercury 831977 Throttle Cam, on the other hand, optimizes the air-fuel mixture and engine timing for increased horsepower and smoother operation. Its unique design offers improved throttle response, reduced fuel consumption, and lower emissions, making it an environmentally-friendly choice for your 25HP outboard motor. The cam is meticulously crafted from high-quality materials, ensuring long-lasting performance and unwavering reliability.

By combining the Mercury 831978 Marine Spark Plug and 831977 Throttle Cam Kit, you can expect a more responsive, fuel-efficient, and powerful engine, ensuring that your outboard motor delivers the performance you need, whether you're cruising leisurely or tackling rough waters. This kit is a perfect investment for boat owners who demand the best from their equipment and are committed to maintaining a well-performing and reliable outboard motor.

Upgrade your 25HP outboard motor today with the Mercury 831978 Marine Spark Plug and 831977 Throttle Cam Kit and experience the difference that precision engineering can make on the water.

Product: Mercury 831978 Marine Spark Plug and 831977 Throttle Cam (for 25hp)

1. High-quality parts from a reputable brand: Mercury is a well-known and trusted manufacturer in the marine industry, ensuring durability and reliability.

2. Designed for 25hp engines: This specific product is designed to fit and optimize the performance of 25hp engines, which could lead to better engine efficiency and longevity.

3. Potential for improved engine performance: A new spark plug and throttle cam may help the engine run smoother, reduce emissions, and potentially increase horsepower.

1. Potential compatibility issues: Always ensure that the parts are compatible with your specific engine model and year.

2. Cost: While these may be high-quality parts, they could be more expensive than aftermarket alternatives.

3. Availability: Depending on your location, these parts may not be readily available at local marine stores, which could lead to delays in repairs or upgrades.

The Mercury 831978 Marine Spark Plug and 831977 Throttle Cam appear to be high-quality parts designed specifically for 25hp engines, which could lead to improved engine performance. However, it's essential to ensure compatibility with your engine model and year, and to be aware of potential costs and availability issues.

If you have a Mercury 25hp engine and are looking to replace your spark plug and throttle cam, the Mercury 831978 Marine Spark Plug and 831977 Throttle Cam could be a good choice, provided they are compatible with your engine model and year. Always consult the Mercury Marine website or a certified Mercury dealer for the most accurate information. If you're looking to save costs, aftermarket alternatives may also be worth considering, but ensure they are compatible with your engine.

Details:

Please refer to all pictures for a detailed view of its condition. This used part is in working condition but may show some signs of wear.

part #: 831978 prices

• $6.00-$37.45

specifications ouboaen:

• for models: Marine
• for makes: Mercury
• mpn: 831978
• part type: Spark Arm Throttle Cam

payments ouboaen:

• credit card: Diners-club
• wallet: Google-pay
• other

offer ouboaen:

• options: Ship-to-home
• started: July 8, 2025
• availability: In Stock
• sold: 0
• quantity: 1

shipping ouboaen:

• service: USPS Ground Advantage
• carrier: USPS
• type: Fixed
• cost: $10.00
• class: Standard
• transit: 3-9 Days

seller ouboaen:

• city: Lake Placid, Florida
• # reviews: 6892
• rating: 100.0%

returns ouboaen:

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

general ouboaen:

• condition: Used
• Boat Parts > Outboard Engines Components > Other

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