ATTWOOD 48421 Boat Shower Sump Pump 750GPH

( Brand: Attwood ), ( Size: 4 1/2 H X 7 W X 13 1/2 D Overall ), ( Color: White ), ( Manufacturer Part Number: 48421 ), ( Material: Plastic ), ( Type: Shower Sump ), ( Boat Brand: Regal Boats )

Review ATTWOOD Boat Shower Sump System 750gph Pump White Plastic

The Attwood 48421 Boat Shower Sump Pump is a high-performing and reliable solution for providing freshwater shower facilities on boats. This pump is designed to move water efficiently, delivering a impressive flow rate of 750 gallons per hour (GPH). The sump pump is constructed from heavy-duty materials, including a corrosion-resistant bronze impeller and a thermoplastic housing, ensuring durability and longevity even in harsh marine environments.

The Attwood 48421 Boat Shower Sump Pump features a self-priming design, which means it can automatically draw water from a low point and pump it up to the shower head without the need for manual priming. This makes it a convenient and hassle-free option for boaters. The pump also includes a 10-foot power cord, allowing for flexible installation options, and a built-in check valve that prevents backflow and ensures that water is always flowing in the correct direction.

The pump's compact size makes it easy to install and integrate into existing boat systems. It can be easily connected to a water tank or other water source, and the included mounting bracket allows for secure attachment to the boat's surface. The pump is also relatively lightweight, weighing in at just under 10 pounds, making it easy to transport and handle.

The Attwood 48421 Boat Shower Sump Pump is designed to operate quietly and efficiently, with a low power consumption of just 1.6 amps. It is also UL and CE listed, ensuring that it meets strict safety standards. The pump is backed by Attwood's one-year limited warranty, providing peace of mind and protection against manufacturer defects.

In summary, the Attwood 48421 Boat Shower Sump Pump is a powerful and efficient solution for providing freshwater shower facilities on boats. With its heavy-duty construction, self-priming design, and easy-to-install features, it is a popular choice among boaters looking to upgrade their onboard shower systems.

The Attwood 48421 Boat Shower Sump Pump is a popular choice among boat owners for providing continuous freshwater supply for onboard showers. Here are some pros and cons to help you make an informed decision about purchasing this pump:

1. High Flow Rate: This pump offers a flow rate of 750 gallons per hour, making it suitable for larger boats or those with multiple shower heads.

2. Self-Priming: The self-priming feature allows the pump to start automatically even when the water level drops, ensuring a continuous water supply.

3. Durable Construction: The pump housing is made of heavy-duty thermoplastic material, making it resistant to corrosion and ideal for marine use.

4. Easy Installation: The pump comes with a pre-assembled suction strainer and a 10-foot power cord, making the installation process relatively simple.

5. Adjustable Flow Control: The pump features an adjustable flow control valve that allows you to regulate the water flow to your shower head.

1. Power Consumption: The pump consumes a significant amount of power, and you may need to upgrade your boat's electrical system to support it.

2. Noisy Operation: Some users have reported that the pump operates loudly, which may be a concern for those seeking a quiet onboard shower experience.

3. Potential Leaking: A few users have reported issues with leaks, particularly around the impeller shaft or the pump housing.

The Attwood 48421 Boat Shower Sump Pump is a reliable and high-performing option for boat owners looking to install an onboard shower system. Its durable construction, high flow rate, and self-priming feature make it a popular choice. However, its power consumption and potential noise and leaking issues are drawbacks that should be considered before making a purchase.

If you are in the market for a boat shower sump pump, the Attwood 48421 is a solid choice, especially if you have a larger boat or multiple shower heads. However, it is essential to ensure that your boat's electrical system can support the pump's power consumption and consider using sound insulation to minimize the noise level. Additionally, be prepared to address any potential leaking issues promptly to prevent any potential damage to your boat.

part # 48421 prices

• $134.67-$147.99

specifications vesselvent:

• brand: Attwood
• size: 4 1/2 H X 7 W X 13 1/2 D Overall
• color: White
• manufacturer part number: 48421
• material: Plastic
• type: Shower Sump
• boat brand: Regal Boats

shipping vesselvent:

• carrier: USPS, FedEx
• transit: 2-6 Days
• service: USPS Ground Advantage, USPS Priority Mail, FedEx Ground / FedEx Home Delivery, USPS Priority Mail Express
• class: Standard, Expedited
• type: Calculated
• cost: $0.00

seller vesselvent:

• rating: 99.7%
• # reviews: 197563

general vesselvent:

• Parts Accessories > Boat Parts > Plumbing Ventilation
• condition: New

payments vesselvent:

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

offer vesselvent:

• started: January 27, 2026
• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 3

returns vesselvent:

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

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