Briggs & Stratton OEM Carburetor 594058 — Automatic‑Choke Replacement for Small Engines

The Briggs & Stratton 594058 carburetor is an OEM auto-choke replacement that meters fuel and air to restore consistent starting and smooth engine operation for compatible small engines.

If your lawn mower, pressure washer or other Briggs & Stratton–equipped outdoor power tool is experiencing hard starts, stalling, or surging, a faulty or clogged carburetor is a common cause. The 594058 is built to Briggs & Stratton's original specifications and includes the automatic-choke linkage required for the specified engine applications. Installing this genuine part helps return the engine’s fuel/air delivery to factory design, but proper fitment, correct gaskets, and careful connection checks are essential for leak-free operation.

How will the 594058 carburetor affect starting and idle?

Replacing a worn or contaminated carburetor with the 594058 can improve cold and warm starting by restoring proper choke function and consistent fuel metering. Idle behavior often smooths out when the fuel/air mixture is correct and passages are unobstructed.

• Includes automatic-choke linkage matched to OEM design for easier cold starts
• Replaces clogged or damaged throttle and fuel passages that cause stalling
• Helps restore steady idle by stabilizing fuel delivery at low rpm

Will this carburetor fit my Briggs & Stratton engine model?

The 594058 is designed to fit specific Briggs & Stratton engine applications—confirming engine model, displacement, and part cross-references is necessary before purchase. Check stamped numbers, model references, and the existing carburetor part number to ensure compatibility.

• Verify engine model and serial numbers against compatibility lists
• Compare the old part number to 594058 and any listed replacement references
• Confirm mounting hole spacing, intake size, and linkage orientation match your engine

What should I check during installation to avoid leaks and issues?

When fitting the 594058, inspect and replace any gaskets, seals, or mounting hardware that appear worn. Tighten bolts evenly, align linkages, and test for fuel leaks before full operation.

• Replace mounting and intake gaskets to maintain an airtight seal
• Ensure automatic-choke linkage is connected and moves freely without binding
• After installation, run the engine briefly and check for visible fuel or vacuum leaks

Why choose a genuine Briggs & Stratton carburetor instead of an aftermarket unit?

Genuine Briggs & Stratton parts are manufactured to OEM tolerances and tested for compatibility with their engines. Using the original part helps preserve engine performance and aligns with emission compliance where applicable.

• Made to the same specifications as the original equipment part
• Tested for fit and function on applicable Briggs & Stratton engines
• Supports proper emission performance when used as intended

Who is this for: The Briggs & Stratton 594058 carburetor is intended for owners and technicians who maintain small engine equipment that uses Briggs & Stratton powerplants—especially those experiencing starting difficulties, rough idle, stalling, or fuel-delivery problems. It’s a good choice if you want a direct-fit, manufacturer-specified replacement; just confirm model fitment, replace gaskets, and follow safe installation practices before use.

Features:

• Help keep your outdoor power equipment running at peak performance by using Briggs and Stratton replacement and maintenance parts.
• Only Briggs and Stratton genuine parts are specially designed to exact OEM standards, manufactured and tested to help deliver optimum performance in Briggs and Stratton engines.
• Not only are Briggs and Stratton genuine parts guaranteed to fit, but using them ensures that the Briggs and Stratton engine they are installed on complies with applicable (EPA) emission regulations.
• Genuine Briggs and Stratton part