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A.A

A.A 42 Gallon RV Fresh/Gray Water Tank 39" x 18" x 14" - BPA Free (42 Gallon)

  • Based on 852 reviews
Condition: New
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Availability: 15 left in stock
Fulfilled by Amazon

Arrives Sunday, Jul 12
Order within 15 hours and 37 minutes
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Size: 42 Gallon


Features

  • This 42 gallon water tank measures 39" x 18" x 14" (not including fittings)
  • All tanks come with (1) 1.25" water fill inlet and (3) 3/8" NPT connections. Non-Pressurized Tank - The tank must be vented
  • These rotational molded fresh water tanks are made from a high quality durable polyethylene material.
  • One piece seamless construction - No Seams to burst
  • Stain, corrosion and rust resistant features make them ideal for replacement or OEM installation on RVs, horse trailers or marine products.

Description

Concession & Food Vendors You must verify requirements with health department where inspection will be made before purchasing. Verify Requirements on Fresh Water Tank, Gray Water Tank, fittings, drainage, and mounting placement. Preparation of The Water Tank As with any food related purchase sanitize each tank prior to use. There may be debris to remove from the manufacturing process. Wipe with damp cloth to remove surface dust or scuffs from the warehouse. Installation Tips For The Water Tank -This is a Non-Pressurized Water Tank that must be vented allowing air in and out when in use. -The purchase of additional fittings to install the tank and connect water lines will needed. -Do not hook a pressurized garden hose directly to tank without venting it, damage can and will occur. -Do not over-tighten fitting on top the water tank, damage can and will occur. -We stock many different fill dishes and food grade water fill hoses, check out our stock for more information. -It is recommended to have a certified technician install all parts to prevent tank damage -There are no installation instructions included. Mounting & Bracing The Water Tank -Place tank on level surface and brace to prevent the water tank from shifting or moving during transit. -Do not hang tank by straps, as this can damage the water tank. -Do not place weight on top of the water tank. Warranty -Cutting or modifying the tank in any way voids any/all warranty. Using this tank for any purpose other than fresh or gray water storage will void any/all warranty. Tank Measurements -14” x 18” x 39” Longest Length (not including fittings) -Rotate the tank to change height or width -Average thickness 1/8” +/- -The fittings are roughly 2.5" long -All measures are within +/- 0.5" Water Tank Fittings -(1) 1.25" Water Fill Inlet -(3) 3/8" NPT Connections.

Brand: A.A


Color: White


Material: Polyethylene (PE)


Product Dimensions: 39"L x 18"W x 14"H


Capacity: 42 gallons


Brand Name: A.A


UPC: 701231042356


Manufacturer: Automotive Authority LLC


Manufacturer Part Number: FWT-RV


Item Dimensions L x W x H: 39"L x 18"W x 14"H


Capacity: 42 gallons


Color: White


Shape: Rectangular


Material Type: Polyethylene (PE)


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jul 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Works great for our camper.
Size: 16 Gallon
I recently ordered the 16 Gallon RV Fresh/Gray Water Tank (24" x 15" x 10") to replace the tank in our camper, and I couldn’t be happier with our choice! Right from the start, this tank impressed us with its quality and performance. The size is absolutely perfect for our needs. It fits seamlessly into the designated space in our camper, and we had no issues fitting it into place. This was a concern for us, as we wanted something that would not only work well but also fit snugly without any modifications. Installation was a breeze! I appreciated how straightforward the process was, with clear instructions that made it easy to hook everything up. Within no time, we were fully operational and ready for our next camping trip. The tank’s design allows for easy access to all necessary attachments, which simplifies the installation process significantly. Durability is another major advantage of this tank. It's made from BPA-free materials, which gives me peace of mind knowing it's safe for fresh water use. The construction feels incredibly sturdy, and I’m confident it can withstand the rigors of camping trips, from rough terrains to temperature changes. Overall, I highly recommend the 16 Gallon RV Fresh/Gray Water Tank to any RV or camper owner looking for a reliable and high-quality replacement. Its perfect size, easy installation, and durable build make it an excellent choice. Thanks to this tank, we’re all set for many more adventures on the road! ... show more
Reviewed in the United States on December 5, 2024 by Sean

  • Very nice tank !
Size: 16 Gallon
Very nice tank, well constructed and fitting are perfect.
Reviewed in the United States on December 28, 2025 by Harold W

  • Smooth operation and solid feel.
Size: 10 Gallon & 16 Gallon
Smooth operation and solid feel.
Reviewed in the United States on March 16, 2026 by Dr. Jalyn Mraz

  • Fast shipping
Size: 10 Gallon & 16 Gallon
Great tanks
Reviewed in the United States on February 19, 2026 by Rw

  • Works Great
Size: 42 Gallon
My 42 Gallon tank works great and if I had to buy another one, I will the price is just right for my budget.
Reviewed in the United States on February 5, 2026 by Amazon Customer

  • Well Made
Size: 16 Gallon
Well made and durable. Just the right size and configuration.
Reviewed in the United States on November 24, 2025 by Mike Williamson

  • Good Product
Size: 30 Gallon
The plastic material is sturdy and there are enough fittings that the tank can be positioned height high or turned 90 degrees (on its side). The 3/8" fittings (3 total) come with threaded plugs and fill hole has an insert to seal the opening. I would like to see baffles inside the tank to reduce the water movement when transporting in a vehicle but not taking off points for none in the 30 gallon tank. ... show more
Reviewed in the United States on June 2, 2024 by KC Gilbert

  • Don't buy! Don't buy!
Size: 30 Gallon
LOTS of plastic sediments inside that could damage your equipment, handwriting on the tank, warped and out of shape. THE WORST is finding 3/8" pvc adapters for this nonsense outlets they placed. I've spend 2 days looking through the stores and had to settle for brass which is the only thing available. Right when I make my connections and about to fill it, I found out their 1.25" inlet doesn't allow for the water hose to neither get in nor attach unless I cut my hose tip so it can get in. So now I have to do more engineering just to fill the damn tank. What neanderthal designed the inlet/outlets? ... show more
Reviewed in the United States on October 9, 2021 Reviewed in the United States on October 9, 2021 by Jeffrey

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