12-76451

Introducing the Quicksilver 12-76451 Diaphragm Washer, an essential replacement part for Mercury Outboard 135 HP engines manufactured in 1990. This high-quality diaphragm washer is specifically designed to ensure the optimal performance and longevity of your outboard engine.

The Quicksilver 12-76451 Diaphragm Washer is made from premium materials to deliver superior durability and flexibility. Its design closely matches the original equipment, ensuring a perfect fit and seamless integration into your engine system. The material used in this diaphragm washer is resilient to the harsh marine environment, including UV radiation, saltwater, and extreme temperatures.

The Quicksilver 12-76451 Diaphragm Washer plays a crucial role in the cooling system of your Mercury Outboard 135 HP engine. It helps maintain the correct engine temperature by allowing water to flow evenly through the engine. Over time, the diaphragm washer can wear out, resulting in poor cooling efficiency and potential engine damage. By replacing this component with a genuine Quicksilver Diaphragm Washer, you can restore the cooling system's performance and protect your engine from costly repairs.

Installing the Quicksilver 12-76451 Diaphragm Washer is a straightforward process. It comes pre-assembled with the gasket, making installation quick and hassle-free. Simply remove the old washer, clean the area, and install the new one. No need for any specialized tools or extensive mechanical knowledge.

The Quicksilver 12-76451 Diaphragm Washer is a vital component for maintaining the overall health and reliability of your Mercury Outboard 135 HP engine. By investing in this genuine replacement part, you can enjoy peace of mind knowing that your engine is operating at its best, allowing you to focus on the enjoyment of your time on the water.

Quicksilver 135 HP Mercury Outboard Diaphragm Washer Replacement: A Worthy Investment?

The Quicksilver 12-76451 diaphragm washer is an essential component for the cooling system of Mercury outboard engines, particularly those with a 135 HP rating. Replacing this part can be necessary due to wear and tear or engine failure. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this diaphragm washer.

1. Enhanced Engine Performance: A faulty or worn-out diaphragm washer can negatively impact engine performance. Replacing the part ensures that the cooling system functions optimally, enabling the engine to run efficiently and effectively.

2. Preventing Costly Repairs: Neglecting to replace a faulty diaphragm washer can lead to more extensive and expensive engine damage. By addressing the issue promptly through a washer replacement, costly repairs can be avoided.

3. Improved Engine Lifespan: Regular maintenance, including diaphragm washer replacement, can contribute to a longer engine lifespan. By ensuring that the engine is well-maintained, it can continue to provide reliable performance for an extended period.

1. Cost: Replacing a diaphragm washer is an additional expense that may not be budgeted for. However, the cost of the part itself is relatively affordable, with prices ranging from $15 to $30. The total cost will depend on the labor and installation fees, which can vary significantly based on location and service provider.

2. Time and Convenience: Having the diaphragm washer replaced requires scheduling time for the repair. If the boat is used frequently, this downtime can be inconvenient. Additionally, if the boat owner is not mechanically inclined, they may need to hire a professional for the replacement, adding to the time and cost.

The decision to purchase a Quicksilver 12-76451 diaphragm washer for a Mercury 135 HP outboard engine depends on the individual boat owner's priorities and circumstances. The advantages, such as improved engine performance and potential cost savings from avoiding more extensive repairs, can outweigh the disadvantages, like the initial cost and inconvenience. Regular maintenance, including diaphragm washer replacement, is crucial for ensuring the engine's longevity and optimal performance. Ultimately, investing in a replacement diaphragm washer can save boat owners money and frustration in the long run.

If you own a Mercury 135 HP outboard engine and have not had the diaphragm washer checked or replaced recently, it is recommended that you consider doing so. Regular maintenance, including diaphragm washer replacement, is essential for the engine's continued performance and longevity. By addressing this issue promptly, you can potentially save yourself from costly repairs and ensure that your boat remains a reliable means of transportation and enjoyment.

Details:

The image to watch on YouTube. This new oem Quicksilver diaphragm washer is a genuine replacement component for the fuel pump assembly in various Mercury/mariner outboard and Mercuries stern drive engines. It is essential for maintaining proper fuel pressure and efficient delivery, ensuring reliable engine performance.fitment confidence score: 98%. 1969-1985 Kawasaki kHz HS kWh trans change drum gasket nos oem 92065-090 qty 2.

Fits: fits 1990 -2006 Mercury outboard 135 hp. Spotlight: a day inside .

specifications inboardfuel:

• for makes: Mercury
• for years: 1990
• brand: Quicksilver
• mpn: 12-76451
• part type: Hp Washer
• country of origin: United States
• manufacturer warranty: Unspecified Length
• storage location: B3 Mro-n Buk 35 Bin 4

general inboardfuel:

• category: Boat Parts > Inboard Engines Components > Intake Fuel Systems

seller inboardfuel:

• rating: 99.2%
• city: odessa, florida
• # reviews: 2000 52

offer inboardfuel:

• options: ship-to-home
• in stock #: 5
• best offers: true
• started: december 11, 2025
• sold #: 12
• availability: in stock
• prices: $1.83–$24.99
• item condition:
  • New other (see details)
  • New
  • Brand New

returns inboardfuel:

• policy: returns accepted
• paid by: seller
• time: 30 days

payments inboardfuel:

• other
• wallet: google-pay
• credit card: discover

shipping inboardfuel:

• type: fixed
• service: usps ground advantage, usps priority mail, fedex 2day, overnight
• class: standard, expedited, one-day
• transit: 5-9 days
• carrier: usps, fedex

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