RYTIME Fuel Tank Replacement for Briggs & Stratton 799863 with Cap — Polyethylene, 4-Mount Holes

RYTIME 799863 is a direct-replacement polyethylene fuel tank with cap designed to fit a wide range of small engine models, including many Briggs & Stratton 121000 and 122000 series engines.

If your mower, snowblower, blower or generator uses one of the common Briggs & Stratton engines listed in the OEM cross-reference (799863, 694260, 695736, 697779, etc.), this tank offers a corrosion-resistant plastic body, four mounting holes for a secure fit and a supplied cap for safe fuel storage. It’s built for compatibility with brands like John Deere, Toro, Troy-Bilt, MTD and Craftsman that use those engines. Before ordering, verify the shape, mounting hole pattern and cap style against your original tank to ensure proper fitment.

Which engines and models will this tank fit?

This RYTIME fuel tank fits many Briggs & Stratton engine part numbers and a number of small engine applications. It’s commonly used with 121000 and 122000 series engines and models that list OEM part numbers 799863, 694260, 695736, 697779, and similar replacements.

• Compatible with numerous Briggs & Stratton models: 110402, 110412, 110415, 110417, 110432, 110437, 110452, 110492, 111412, 121002–121162 series, and many more.
• Cross-references OEM numbers 799863, 694260, 698110, 695736, 695728, 697779.
• Suits small engines used by John Deere, Toro, Troy‑Bilt, MTD and Craftsman when those engines use matching part numbers.

How easy is installation and what hardware is needed?

Installation is straightforward: the tank includes four mounting hole positions that match common small-engine frames. You’ll typically reuse the existing fuel line, grommet and mounting bolts from the original tank, but check fitment first to avoid surprises.

• Four preformed mounting holes for bolt-on replacement.
• Reuses original grommet and fuel hose in most installations—verify hose diameter.
• Basic hand tools required: socket or wrench set and screwdrivers.
• Confirm mounting hole spacing and cap orientation before drilling or modifying.

What materials and durability features does the tank have?

The tank is molded from corrosion-resistant plastic engineered for fuel contact, which prevents rust common with metal tanks and helps extend engine longevity. The cap seals the filler to reduce spills and evaporation when installed correctly.

• Durable corrosion-resistant polyethylene construction for long-term fuel storage.
• OEM-style cap included for a secure seal.
• Resists degradation from common gasoline blends used in small engines.
• Manufactured to match shape and mounting patterns of original equipment tanks.

How can I confirm this is the right replacement for my machine?

Compare the tank’s pictures, mounting hole layout and cap style to your current tank before purchasing. Cross-check the engine model and OEM part number on your engine or parts diagram with the listed compatible numbers to avoid returns.

• Inspect your engine’s parts sticker or owner’s manual for the OEM fuel tank number.
• Match mounting hole spacing and overall tank silhouette with the photos.
• Confirm fuel line diameter and cap thread type if possible.
• Contact the seller or consult a parts diagram for borderline fits.

Who is this for: This RYTIME 799863 fuel tank is intended for DIY small-engine repairers, landscapers, homeowners and mechanics who need a reliable, corrosion-resistant replacement for Briggs & Stratton 121000/122000 series engines and compatible equipment from John Deere, Toro, Troy‑Bilt, MTD and Craftsman. If you maintain mowers, snowblowers, blowers or portable generators and your original fuel tank shows cracks, leaks or rust, this tank provides a practical, bolt‑on alternative—just verify fitment with your machine before installation.