84004115 Fuel Gas Tank with Lawnmower Gas Cap Engine Fuel Tank Replacement Part Compatible with Lawn mower Engine 093J02-0093-F1 103M05-0026-F1 103M0B-0040-F1 & More, Replace#: 594112

What It Is

This is an aftermarket fuel tank assembly (including cap) designed to replace the original tank on specific small engines, primarily used in walk-behind lawn mowers, pressure washers, and generators. It directly swaps with OEM part number 594112 and fits several Briggs & Stratton single-cylinder engines listed in the title.

Fitment & Compatibility

Before buying, confirm your engine’s model number (e.g., 093J02-0093-F1 or 103M05-0026-F1) – this is stamped on the engine shroud near the spark plug. The tank is not a universal fit for all mowers; it’s specific to engines from the above series. Measure the mounting bolt pattern (center-to-center distance) and tank depth if possible – common dimensions are roughly 6.5” x 4.5” x 5.5”. Check that your original tank uses a 1/4” NPT fuel outlet (most do, but verify). This is an aftermarket part, not OEM Briggs & Stratton, so slight plastic color or cap fit differences are possible.

Key Things to Know

• Quality concerns: Several reviews note thin plastic that can crack if overtightened or exposed to fuel additives. Handle carefully during installation.
• Cap seal: The included gas cap may not seal as tightly as OEM – test for leaks before running the engine. Consider reusing your original cap if it’s in good shape.
• Installation difficulty: Easy swap – remove old tank, disconnect fuel line, transfer the fuel shutoff valve (if present), and bolt on the new one. No special tools required.
• Fuel line compatibility: The outlet barb is 1/4” – confirm your fuel line inner diameter matches. If not, you’ll need a small adapter or new line.

Should You Buy It

Buy this if you need a direct, budget-friendly replacement for a cracked or leaking fuel tank on a compatible Briggs & Stratton engine and are comfortable with a slightly less durable plastic than OEM. Skip it if you want a guaranteed perfect seal or are working with a non-listed engine model – the fitment risk is real.