LMT 5-4993 Carburetor for Brriggs Stratton 799728 498027 28B702 28B707 28R707 12HP 28M707 289707 28V707 286707 28T707 28A707 282707 499161 Engines

What It Is

The LMT 5-4993 is an aftermarket carburetor replacement for Briggs & Stratton single-cylinder engines in the 12HP range, commonly used on riding mowers, lawn tractors, and some zero-turn mowers. It replaces OEM part numbers 799728, 498027, and 499161.

Fitment & Compatibility

Before buying, check your engine’s model, type, and code number (stamped on the valve cover or blower housing). This carb fits Briggs & Stratton engines with model numbers 28B702, 28B707, 28R707, 28M707, 289707, 28V707, 286707, 28T707, 28A707, 282707, and similar 28-series engines. It also works with engines using OEM carburetors 799728, 498027, and 499161. Measure the mounting bolt spacing (2.75 inches center-to-center) and the fuel inlet size (0.25 inch barb). Verify your engine has a vertical shaft and a bowl-type carburetor—not a side-draft or diaphragm style. This is not a direct fit for Intek or Vanguard engines without cross-referencing.

Key Things to Know

• Build quality: The LMT carb is an all-metal unit with a gasket set and fuel line included, but the adjustment screws may feel slightly less precise than OEM—plan to fine-tune idle and mixture after install.
• Installation difficulty: Moderate. You’ll need a socket set, screwdrivers, and possibly a new air filter gasket. Expect 30–60 minutes. Clean the fuel tank and replace the fuel filter if present.
• Common gotchas: The included gaskets may be thin—use a dab of gasket sealant on the intake manifold side to prevent air leaks. Also, the float bowl screw can strip easily; don’t overtighten.
• OEM vs aftermarket: This is a budget-friendly alternative to an OEM Briggs carb (often $40–$60). Performance is comparable for most users, but long-term durability on high-hour mowers may differ.

Should You Buy It

Buy this if you have a compatible Briggs 28-series engine and want a cost-effective fix for hard starting, surging, or fuel leaks without spending OEM money. It’s a solid choice for DIY repairs on older tractors or mowers with moderate use. Skip it if you need a perfect OEM match for a warranty or commercial machine.