692046 Tank Cap For Briggs & Stratton Intek Model Series 121600 Vertical 692046, 397974, PT11028 590949

What It Is

This is a replacement fuel tank cap for Briggs & Stratton Intek engines, specifically the Model Series 121600 vertical shaft engines. It seals the fuel tank to prevent leaks and keep debris out.

Fitment & Compatibility

Before buying, verify your engine’s model number (e.g., 121602, 121612) on the valve cover or blower housing—this cap fits all Intek 121600 series vertical engines. It replaces OEM part numbers 692046, 397974, and PT11028 590949. The cap has a standard twist-on design with a 1.5-inch diameter opening; measure your tank neck if unsure. This is an aftermarket cap, not genuine Briggs & Stratton, but it matches OEM specs. It does not fit horizontal shaft engines or older Briggs models without the 121600 series.

Key Things to Know

• Quality: Made of durable plastic with a rubber gasket that seals well; most users report no leaks. Slightly thinner plastic than OEM but functional.
• Installation: Twist on until snug—no tools needed. Avoid overtightening, which can crack the cap or gasket.
• Common gotcha: The cap may not fit tanks with damaged threads or debris; clean the tank neck before installing.
• Venting: This cap is vented, so it’s safe for standard fuel tanks; not for pressurized systems.

Should You Buy It

If you own a Briggs & Stratton Intek 121600 series lawn mower and need a budget-friendly, reliable replacement for a lost or cracked cap, this is a solid choice. It’s easy to install and works as expected for the price. Skip it if you prefer OEM parts or have a different engine model.