JDMSPEED Carburetor Kit for Intek 40N777/40N877 Engines — Direct-Fit 594207 Replacement with Gaskets

JDMSPEED replacement carburetor kit 594207 (with gaskets) restores proper fuel delivery for compatible Intek engines, designed as a direct-fit swap for many 40N777 and 40N877-series mower and tractor engines.

If your lawn tractor or mower equipped with an Intek 40N777 or 40N877-series engine is running rough, hard to start, or flooding, a worn or damaged carburetor is often the cause. This JDMSPEED carb kit ships complete with the carburetor assembly and gaskets so you can replace the part quickly and get back to mowing. It matches OEM part numbers 594207, 597126, and 595216 and is compatible with a long list of 40N777 and 40N877 engine variants.

Which engines and part numbers is this carburetor compatible with?

This kit is engineered to fit specific Intek engines across the 40N777 and 40N877 families and corresponds to several OEM part numbers. Verify your engine code and part number before ordering to ensure a correct match.

• Compatible part numbers: 594207, 597126, 595216.
• Fits multiple 40N777 variants (for example 40N777-0001-B1 through -0024-B1 as listed).
• Fits multiple 40N877 variants (for example 40N877-0001-B1 through -0056-G1 as listed).
• Check engine stamping or original carb label to confirm fitment.

How simple is installation and what comes in the package?

Installation is straightforward for anyone comfortable with basic small‑engine work and requires common hand tools. The kit arrives assembled with the necessary gaskets to replace the old carburetor without hunting for extra parts.

• Package contains: 1 complete carburetor plus gaskets as pictured.
• Includes mounting and intake gaskets to prevent air or fuel leaks when installed.
• Designed for bolt-on replacement—no machining or modification needed for compatible engines.
• Typical install time: 30–60 minutes depending on access and experience.

What performance and durability can I expect from this JDMSPEED carb kit?

The unit is built for reliable operation under normal mowing conditions and aims to restore correct fuel/air metering to the engine. While not a performance upgrade, it replaces worn components that cause poor idling, stalling, or hard starts.

• Materials and machining aimed at long service life in typical residential lawn equipment use.
• Restores consistent idle and throttle response when matched to the correct engine model.
• Helps reduce fuel leaks and flooding by replacing old seals and gaskets.
• Not intended as an aftermarket performance tuner—fits stock specifications.

Who this is for: This carburetor kit is for homeowners, landscapers, and small-engine mechanics who need a cost-effective replacement for a failing carburetor on Intek 40N777 or 40N877-series mower and tractor engines. It’s ideal if you’ve confirmed your engine model and part number, want a direct-fit swap with included gaskets, and prefer a ready-to-install replacement to avoid downtime. If you’re unsure about compatibility, compare your engine stamp or old carburetor part number to the list provided before purchase to prevent incorrect orders and extra expense.