High-angle perspective of a 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank replacement featuring a rugged Coal Tar Epoxy finish. This view highlights the dual internal baffles, offset fuel pickups, and heavy-duty welded mounting tabs, ensuring a guaranteed OEM fit and maximum corrosion resistance in foamed-in hull environments.
Dimensional diagram of a Yellowfin 21 Bay-Hybrid (2010–2023) replacement fuel tank. The image highlights key measurements—59" length, 23" width, and 10" height—confirming a guaranteed OEM fit for this 50-gallon marine-grade aluminum unit featuring heavy-duty mounting tabs and offset fuel ports.
Close-up of a 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank showing the heavy-duty Coal Tar Epoxy coating and official manufacturing label. This view highlights the precision-welded fuel pickups, sending unit, and 90-degree vent fittings required for a guaranteed OEM fit and long-term corrosion resistance in offshore marine environments.
Close-up of the 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank showcasing the rugged Coal Tar Epoxy finish and precision-welded mounting tabs. This detail highlights the high-quality aluminum construction and fuel pickup ports, ensuring a guaranteed OEM fit and superior corrosion protection for bay boat fuel system restorations.
A 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank replacement shown with a full Coal Tar Epoxy coating. The image highlights the rugged aluminum construction, precision-welded mounting tabs, and top-mounted fuel system fittings, ensuring a guaranteed OEM fit and superior protection against corrosion in offshore bay boat applications.
Close-up of the Welding World Inc. manufacturing label and KUS sending unit on a 50-gallon Yellowfin 21 Bay-Hybrid fuel tank. The label confirms the .125" aluminum thickness, 5052-H32 material grade, and 5 psi pressure test certification, ensuring this Coal Tar Epoxy coated tank meets all USCG and ABYC safety standards for a guaranteed OEM fit.
Side-profile view of a 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank showcasing the uniform Coal Tar Epoxy encapsulation. The image highlights the tank's low-profile 10-inch height and the strategic placement of welded mounting tabs and top-mounted fuel fittings, ensuring a guaranteed OEM fit within the hull's internal stringer system.
Top-down plan view of a 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank replacement. This overhead perspective highlights the precision placement of the fuel fill, vent, and dual pickup ports, as well as the heavy-duty welded mounting tabs and Coal Tar Epoxy encapsulation required for a guaranteed OEM fit.
A rear-perspective view of the 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank replacement featuring a full Coal Tar Epoxy coating. The image showcases the precision-welded mounting tabs and the specific layout of the fuel sender and pickup ports, engineered for a guaranteed OEM fit within the boat's center stringer system.
Bottom-perspective view of a 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank replacement, highlighting the heavy-duty Coal Tar Epoxy coating and specialized hull-conforming geometry. This view showcases the structural integrity and high-build finish required for a guaranteed OEM fit and maximum durability within the boat's internal stringer cavity.
High-angle perspective of a 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank replacement featuring a rugged Coal Tar Epoxy finish. This view highlights the dual internal baffles, offset fuel pickups, and heavy-duty welded mounting tabs, ensuring a guaranteed OEM fit and maximum corrosion resistance in foamed-in hull environments.
Dimensional diagram of a Yellowfin 21 Bay-Hybrid (2010–2023) replacement fuel tank. The image highlights key measurements—59" length, 23" width, and 10" height—confirming a guaranteed OEM fit for this 50-gallon marine-grade aluminum unit featuring heavy-duty mounting tabs and offset fuel ports.
Close-up of a 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank showing the heavy-duty Coal Tar Epoxy coating and official manufacturing label. This view highlights the precision-welded fuel pickups, sending unit, and 90-degree vent fittings required for a guaranteed OEM fit and long-term corrosion resistance in offshore marine environments.
Close-up of the 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank showcasing the rugged Coal Tar Epoxy finish and precision-welded mounting tabs. This detail highlights the high-quality aluminum construction and fuel pickup ports, ensuring a guaranteed OEM fit and superior corrosion protection for bay boat fuel system restorations.
A 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank replacement shown with a full Coal Tar Epoxy coating. The image highlights the rugged aluminum construction, precision-welded mounting tabs, and top-mounted fuel system fittings, ensuring a guaranteed OEM fit and superior protection against corrosion in offshore bay boat applications.
Close-up of the Welding World Inc. manufacturing label and KUS sending unit on a 50-gallon Yellowfin 21 Bay-Hybrid fuel tank. The label confirms the .125" aluminum thickness, 5052-H32 material grade, and 5 psi pressure test certification, ensuring this Coal Tar Epoxy coated tank meets all USCG and ABYC safety standards for a guaranteed OEM fit.
Side-profile view of a 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank showcasing the uniform Coal Tar Epoxy encapsulation. The image highlights the tank's low-profile 10-inch height and the strategic placement of welded mounting tabs and top-mounted fuel fittings, ensuring a guaranteed OEM fit within the hull's internal stringer system.
Top-down plan view of a 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank replacement. This overhead perspective highlights the precision placement of the fuel fill, vent, and dual pickup ports, as well as the heavy-duty welded mounting tabs and Coal Tar Epoxy encapsulation required for a guaranteed OEM fit.
A rear-perspective view of the 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank replacement featuring a full Coal Tar Epoxy coating. The image showcases the precision-welded mounting tabs and the specific layout of the fuel sender and pickup ports, engineered for a guaranteed OEM fit within the boat's center stringer system.
Bottom-perspective view of a 50-gallon Yellowfin 21 Bay-Hybrid (2010–2023) fuel tank replacement, highlighting the heavy-duty Coal Tar Epoxy coating and specialized hull-conforming geometry. This view showcases the structural integrity and high-build finish required for a guaranteed OEM fit and maximum durability within the boat's internal stringer cavity.

Yellowfin 21 Bay-Hybrid (50 gal) Fuel Tank | 2010-2023 OEM Replacement

$ 1,200.00
/
  • 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.

Engineered to meet the exact performance standards of the 2010–2023 Yellowfin 21 Bay-Hybrid, this 50-gallon replacement fuel tank is the ultimate solution for a seamless "one-and-done" restoration. This unit is precision-designed to fit perfectly within the original stringer grid, ensuring your vessel maintains the factory-specified weight distribution and shallow-draft capabilities essential for elite bay boat performance. To provide a massive upgrade in longevity, the entire tank is encapsulated in a high-build Coal Tar Epoxy shield, creating a permanent moisture barrier that prevents corrosion in foamed-in hull environments. This drop-in replacement aligns perfectly with all factory fill, vent, and pickup locations, offering a rugged, long-term upgrade that far outlasts standard aluminum alternatives.

 

  • Guaranteed to Fit Your Yellowfin
    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 5052 H32 Aluminum Construction
    Built from premium marine-grade 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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