1. Used Boat Parts
  2. sku: 12312625620955983
  3. MERCURY 878492T

MERCURY 878492T Quicksilver Junction Box Boat 4-WAY

fits make: Mercury.

878492t Mercury New Quicksilver 4-way Junction Box Oem Factory Boat Parts

( Part Type: Box ), ( Manufacturer Part Number: 878492T ), ( Country Of Origin: United States )

Review MERCURY New Quicksilver 4-way Junction Box Oem Factory Boat Parts

The Mercury 878492 Quicksilver 4-Way Junction Box is a versatile and essential accessory for boat owners who require additional power outlets for their marine electrical systems. This 4-way junction box, manufactured by Mercury Marine, is part of the Quicksilver line of marine electrical components, known for their durability and reliability.

The Mercury 878492 Quicksilver 4-Way Junction Box is designed to provide boaters with the ability to connect and distribute power from multiple sources to various accessories, such as lights, pumps, or charging stations. This junction box is constructed using marine-grade materials, ensuring that it can withstand the harsh marine environment. It features a gasketed, watertight design to protect internal components from water intrusion, making it suitable for use in even the most challenging boating conditions.

Measuring 3.6 inches in height, 3.6 inches in width, and 5.2 inches in depth, the Mercury 878492 Quicksilver 4-Way Junction Box is compact yet capable of handling up to four power sources. Each of the four power terminals is clearly labeled and color-coded, making it easy for users to identify and connect the correct wires. The junction box also includes four ground terminals, ensuring a safe and secure ground connection for all accessories.

The Mercury 878492 Quicksilver 4-Way Junction Box is compatible with various marine electrical systems and can be easily installed using the included mounting hardware. It features a conveniently located fuse holder, allowing users to add additional fuses if necessary for added safety and protection against electrical overloads.

In summary, the Mercury 878492 Quicksilver 4-Way Junction Box is a high-quality, durable, and versatile accessory for boat owners in need of additional power outlets. Its marine-grade construction, watertight design, and compatibility with various electrical systems make it an essential component for any boat's electrical system.

Mercury's Qualsilver 878492T 4-way junction box is a popular choice among boat owners for distributing power to various accessories on their watercraft. Let's examine the pros and cons of purchasing this junction box.

Pros:

1. Durable: The Qualsilver 4-way junction box is built to withstand the harsh marine environment. It is designed with a gasketed seal and is rated as watertight and UV-resistant.

2. Versatile: The 4-way design allows for multiple power sources to be connected and distributed to various accessories.

3. Easy to Install: The junction box comes with pre-attached wiring terminals, making installation quick and easy.

4. Safety Features: The junction box has a built-in fuse block to protect against overcurrent and short circuits.

Cons:

1. Limited Capacity: The 4-way design may not be sufficient for boats with many power accessories. In such cases, a larger junction box may be required.

2. Price: The Mercury Qualsilver 4-way junction box is more expensive compared to some other brands and models.

3. Size: The junction box is relatively large, which may require more space for installation.

Conclusion:

The Mercury Qualsilver 4-way junction box offers several advantages, including durability, versatility, ease of installation, and safety features. However, it may not be the best choice for boats with a large number of power accessories due to its limited capacity. Additionally, the price and size may be a concern for some boat owners.

Recommendation:

If you have a moderate number of power accessories on your boat, the Mercury Qualsilver 4-way junction box is an excellent choice due to its durability, versatility, and safety features. However, if you have a larger number of accessories, consider purchasing a larger junction box with more capacity. If price or size is a concern, you may want to explore other brands and models that offer similar features at a lower cost or smaller size.

Details:

Mercury Quicksilver 878492T 4-Way Junction Box OEM New Factory Boat Parts.

part #: 878492t prices

  • $43.16-$59.97

specifications vesselveep:

  • for makes: Mercury
  • part type: Box
  • manufacturer part number: 878492T
  • country of origin: United States

offer vesselveep:

  • quantity: 1
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • started: January 30, 2026
  • best offers: True

payments vesselveep:

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

seller vesselveep:

  • # reviews: 1
  • city: Gravois Mills, Missouri
  • rating: 100.0%

returns vesselveep:

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

general vesselveep:

  • condition: New
  • Parts Accessories > Boat Parts > Other

shipping vesselveep:

  • type: Calculated
  • transit: 7-11 Days
  • class: Standard
  • service: USPS Ground Advantage
  • cost: $5.89
  • carrier: USPS
for makes: mercury, part type: box, country of origin: united states,
sku: 12312625620955983,

Mercury 878492T Is Similar To:

vesselveep logo
5 offers $43.16–$59.97 USD
  • New. Offer #1 priced at $52.00 + $7.42 delivery = $59.42* total. New 4-Way Junction Box Mercury Marine OEM.+$7.42 shipping
  • New. Offer #2 priced at $43.16 + $6.95 delivery = $50.11* total. +$6.95 shipping
  • New. Offer #3 priced at $59.97 + $0.00 delivery = $59.97* total. FREE SHIPPING
  • New other (see details). Offer #4 priced at $96.88 + $47.81 delivery = $144.69* total. No original box. Cummins Part Number: 4939815.+$47.81 shipping
  • New. Offer #5 priced at $45.00 + $6.37 delivery = $51.37* total. +$6.37 shipping

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