DKIIGAME Lawn Mower Fuel Tank for Briggs & Stratton 594112 – 1.5-Gallon Direct-Fit with Child-Resistant Cap

DKIIGAME's 1.5-gallon fuel tank is a direct replacement for Briggs & Stratton 594112 (part #84004115), designed to restore fuel capacity and prevent spills with a child-resistant screw cap.

This replacement fuel tank fits a wide range of Briggs & Stratton engines that use the 594112 configuration. Molded from reinforced plastic, it delivers an OEM-style fit without modifications, making it a practical repair option for mowers, garden tractors, and other small engine equipment. The integrated cap and pre-drilled mounting points simplify installation and help keep contaminants out of your fuel system.

How easy is it to replace my old Briggs & Stratton fuel tank?

Swap-in installation is straightforward: remove the drained old tank, unfasten the fuel line and mounting screws, then position and secure the replacement. No cutting, drilling, or special tools are required for most compatible models.

• Direct-fit for 594112 engines and part #84004115 replacement
• Pre-formed mounting holes match original locations
• Includes screw-on child-resistant cap to secure fuel
• Installation typically completed in under 30 minutes

What materials and features protect the tank from damage?

The tank is constructed from durable, high-density plastic with reinforced walls to resist cracking and warping from vibration and weather exposure. Screw ports are strengthened to keep the fuel cap tight, and the cap design reduces spill risk during refueling and transport.

• Heavy-duty plastic resists UV and impact
• Reinforced screw ports prevent cap loosening
• Integrated cap design minimizes fuel evaporation and leaks
• Corrosion-free construction versus metal tanks

Which engine models and mower setups is this tank compatible with?

This tank replaces Briggs & Stratton part #84004115 and fits machines that call for the 594112 fuel tank. Compatibility includes many popular small-engine model codes used in walk-behind mowers and other outdoor power equipment.

• Compatible with numerous B&S engine model codes (see product listing)
• Intended for units originally using the 594112 tank form factor
• Works with common consumer mowers and some commercial light-duty units
• Confirmed fit where OEM mounting and fuel-line routing match

How does the tank help with safety and maintenance?

The included child-resistant screw cap reduces accidental spills and access, while the sealed design keeps dirt and moisture out of the fuel system. Using a proper replacement tank reduces the risk of fuel leaks and helps maintain efficient engine performance when paired with routine maintenance.

• Child-resistant cap improves on-site safety
• Sealed construction keeps debris out of fuel lines and carburetor
• Restores correct fuel capacity for longer mowing sessions
• Reduces fire and spill hazards compared with damaged tanks

Who is this for: This DKIIGAME fuel tank is for homeowners, landscapers, and repair technicians seeking a reliable, direct-fit replacement for Briggs & Stratton 594112/part #84004115 tanks. If your mower needs restored fuel capacity, leak-free storage, and a durable cap solution without aftermarket modification, this tank provides a cost-effective, easy-to-install option. Contact us within 24 hours if you need help identifying fitment or require post-purchase support.