A combination set of two different-sized, black-coated boat tanks, displayed against a checkered background. The set consists of a large, long rectangular fuel tank in the background and a much smaller, compact water tank in the foreground. The large tank is equipped with multiple mounting tabs and a lifting lug, while the small tank features two prominent curved white pipes on its top surface
A 3D schematic of the replacement fuel tank for a 1987 Mako 261, shown against a black background. Text on the image identifies the tank as having a 182-gallon net capacity. Dimension lines detail its measurements as 91 inches long, 31 ½ inches wide, and 17 inches high. The silver-colored schematic features a curved front bottom edge, four mounting tabs, and numerous fittings on its top surface. The 'WW' anchor logo for Welding World is in the bottom right corner
A 3D schematic of the modified water tank for a 1987 Mako 261, shown against a black background. Text on the image identifies the tank as having a 23-gallon net capacity. Dimension lines detail its measurements as 31 ½ inches long, 12 inches wide, and 12 inches high. The silver-colored schematic shows a central fitting assembly with two curved pipes on its top surface. The 'WW' anchor logo for Welding World is in the bottom right corner
A combination set of two black-coated boat tanks, one large and one small, displayed against a checkered background. The primary tank is a long, rectangular belly tank with a rounded front bottom edge, equipped with multiple mounting tabs and a fuel sending unit. Positioned behind it, a much smaller, compact rectangular tank features its own set of fittings and mounting tabs
A long, rectangular boat fuel tank with a black coating, viewed from a front corner against a checkered background. A heavy-duty mounting bracket with a circular hole is centered on the front face, which features prominent vertical welding beads. Multiple L-shaped tabs line the top edges, and the front bottom edge is cut into a shallow V-shape. The top surface is equipped with a fuel sending unit and other fittings
A combination set of two different-sized, black boat tanks with a heavy, textured coating, displayed against a checkered background. A small, compact tank, likely for fresh water, sits in the foreground and features two prominent curved white pipes on top. In the background, a much longer rectangular fuel tank is shown with multiple mounting tabs and its own set of fuel fittings
A long, rectangular boat fuel tank with a black coating, viewed from a high, three-quarter profile angle against a checkered background. Multiple flat mounting tabs are welded along the top edges. Two clusters of fittings are located at opposite ends of the top surface; one includes a fuel sending unit, while the other features a fuel fill assembly with a curved white pipe
A compact, rectangular boat tank with a very heavy, textured black coating, viewed from a high three-quarter angle against a checkered background. The top surface features a cluster of fittings, including a large silver fuel fill assembly, a curved white vent pipe, and a white manufacturer's label. A black mounting bracket is visible on the far corner of the tank
A close-up of a white manufacturer's label on a heavily textured black surface, situated between a fuel sending unit on the left and a brass fitting below. The "Welding World, Inc." label identifies the product as a "Mako 261 Fuel Tank" with a 182-gallon capacity, made on September 8, 2022. A black wire from the sending unit curves across the bottom of the frame. The label also features ABYC and NMMA compliance logos
A close-up of a white manufacturer's label on a heavily textured black surface, with a white pipe visible along the right edge. The "Welding World, Inc." label identifies the product as a "Mako 261 Water Tank" with a 23-gallon capacity, made on September 8, 2022. Although recommended for water, the label includes a standard warning about fuel leaks and displays ABYC and NMMA compliance logos
A combination set of two different-sized, black-coated boat tanks, displayed against a checkered background. The set consists of a large, long rectangular fuel tank in the background and a much smaller, compact water tank in the foreground. The large tank is equipped with multiple mounting tabs and a lifting lug, while the small tank features two prominent curved white pipes on its top surface
A 3D schematic of the replacement fuel tank for a 1987 Mako 261, shown against a black background. Text on the image identifies the tank as having a 182-gallon net capacity. Dimension lines detail its measurements as 91 inches long, 31 ½ inches wide, and 17 inches high. The silver-colored schematic features a curved front bottom edge, four mounting tabs, and numerous fittings on its top surface. The 'WW' anchor logo for Welding World is in the bottom right corner
A 3D schematic of the modified water tank for a 1987 Mako 261, shown against a black background. Text on the image identifies the tank as having a 23-gallon net capacity. Dimension lines detail its measurements as 31 ½ inches long, 12 inches wide, and 12 inches high. The silver-colored schematic shows a central fitting assembly with two curved pipes on its top surface. The 'WW' anchor logo for Welding World is in the bottom right corner
A combination set of two black-coated boat tanks, one large and one small, displayed against a checkered background. The primary tank is a long, rectangular belly tank with a rounded front bottom edge, equipped with multiple mounting tabs and a fuel sending unit. Positioned behind it, a much smaller, compact rectangular tank features its own set of fittings and mounting tabs
A long, rectangular boat fuel tank with a black coating, viewed from a front corner against a checkered background. A heavy-duty mounting bracket with a circular hole is centered on the front face, which features prominent vertical welding beads. Multiple L-shaped tabs line the top edges, and the front bottom edge is cut into a shallow V-shape. The top surface is equipped with a fuel sending unit and other fittings
A combination set of two different-sized, black boat tanks with a heavy, textured coating, displayed against a checkered background. A small, compact tank, likely for fresh water, sits in the foreground and features two prominent curved white pipes on top. In the background, a much longer rectangular fuel tank is shown with multiple mounting tabs and its own set of fuel fittings
A long, rectangular boat fuel tank with a black coating, viewed from a high, three-quarter profile angle against a checkered background. Multiple flat mounting tabs are welded along the top edges. Two clusters of fittings are located at opposite ends of the top surface; one includes a fuel sending unit, while the other features a fuel fill assembly with a curved white pipe
A compact, rectangular boat tank with a very heavy, textured black coating, viewed from a high three-quarter angle against a checkered background. The top surface features a cluster of fittings, including a large silver fuel fill assembly, a curved white vent pipe, and a white manufacturer's label. A black mounting bracket is visible on the far corner of the tank
A close-up of a white manufacturer's label on a heavily textured black surface, situated between a fuel sending unit on the left and a brass fitting below. The "Welding World, Inc." label identifies the product as a "Mako 261 Fuel Tank" with a 182-gallon capacity, made on September 8, 2022. A black wire from the sending unit curves across the bottom of the frame. The label also features ABYC and NMMA compliance logos
A close-up of a white manufacturer's label on a heavily textured black surface, with a white pipe visible along the right edge. The "Welding World, Inc." label identifies the product as a "Mako 261 Water Tank" with a 23-gallon capacity, made on September 8, 2022. Although recommended for water, the label includes a standard warning about fuel leaks and displays ABYC and NMMA compliance logos

Mako 261 Modified Version - Fuel (182 gal.) + Water (23 gal.) Tanks Combo | OEM Replacement

$ 2,900.00
/
  • Local pickup available
  • Over-sized & over-weight item.
  • Only Ships LTL Freight.
  • Call us Mon.-Fri. 8:30 a.m. to 4:40 p.m. if in any doubt.

  • Guaranteed to Fit Your Mako
    Every tank is engineered using OEM drawings and/or reverse-engineered from an original unit to ensure a precise, 100% guaranteed fit.

 

  • Fully Certified Manufacturing
    Our tanks are built by an NMMA-type certified manufacturer and produced in accordance with all ABYC standards.

 

  • USCG Compliant & Pressure Tested
    Each tank meets all USCG requirements and is individually pressure-tested in house. All federal regulations are followed throughout our manufacturing process to ensure maximum safety and reliability.

 

  • .125-Thickness Alcoa® 5052 H32 Aluminum Construction
    Built from premium marine-grade Alcoa® 5052 H32 aluminum at .125 thickness for exceptional strength and long-term durability.

 

  • Complete, Ready-to-Install System
    Each tank comes fully equipped with all required components — including the sender, fittings, and hardware.

 

  • Precision Hand-Welded Construction
    Every tank is hand-crafted using GTAW (TIG) welding, exceeding ASME and AWS D3.7:2004 standards for marine aluminum fabrication.                                                   

 

  • Sherwin-Williams® TarGard® Epoxy Coating
    Finished with Sherwin-Williams® TarGard® Epoxy to provide added protection against corrosion and harsh marine environments, extending the overall life of the tank.

 

  • KUS® (formerly WEMA USA®) Reed-Switch Fuel Level Sender
    Features a high-quality KUS® reed-switch sender with an NBR float, providing accurate and reliable fuel-level measurement.

 

Buy with confidence. Shortly after your payment clears you'll be sent via e-mail a complete set of detailed drawings for you to check all dimensions and fittings positions. If there's any difference from your old tank we can make any reasonable modifications to accommodate your needs. Fabrication of your new tank won't start until you send us your specs confirmation.  

 

IMPORTANT NOTE: The base price is for local pickup in our SW Miami Shop. Check options above for crating and shipping to the contiguous 48 States. All tanks are made to order and the fabrication lead time is 1-2 work weeks. The finished tank pickup window is also 1-2 work weeks, so make sure you will be able to take delivery of your finished tank within that timeframe.     

 

NOTE: Check your tank dimensions thoroughly! Once a tank is manufactured and/or shipped we can't be responsible for mismatches and refunds or returns won't be accepted. All sales are final!

 

Shipping: Only freight to the 48 contiguous states. Contact us for extra-cost shipping options for HI and AK. Orders for international shipping from US-based carriers are welcome but contact us first to coordinate details.

 

Return Policy: No refunds are accepted, as all of our products are made to order. Our policy is strictly limited to the repair or replacement of qualifying defective or damaged goods. Please note that shipping costs are non-refundable. 

 

Fabrication lead time (before shipping): 1-2 work weeks. 

Due to this item's size and weight we can only ship it in an economical way via Less Than Truckload (LTL) consolidated land shipping, and only to the contiguous 48 States.

For shipping inquiries to AK, HI, PR, US-VI, and international shipping, please contact us first at sales@weldingworldinc.com.

All of the destinations above we can only serve as a Free Carrier (or FCA) modality, that requires the customer to contract and pay for their carrier service of choice. We can still ship the item, but only to a warehouse/receiving office within the 48-contiguous States.

In plain terms what this means is that if you want to ship your product to any non-contiguous US territory or internationally, you, the customer, has to provide us with the warehouse address of the carrier that serves your locality with an address within the contiguous 48-US States, as we do not ship overseas on our own.

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