MDAIRC Carburetor Rebuild Kit for Kohler AM125355 Engines — Complete Carb, Gaskets & Filters

MDAIRC's complete carburetor kit replaces Kohler AM125355-style carburetors and includes matching gaskets, filters, fuel pump, spark plug and installation hardware for a ready-to-install overhaul.

This rebuild kit is designed as a direct-fit replacement for a range of Kohler small-engine models calling for part numbers 12-853-57-S, 12-853-80-S, 12-853-82-S, 12-853-139-S and AM125355. The set arrives with the carburetor itself plus the common wear parts you typically change during a service: gaskets, air and oil filters, fuel filter and pump, clamps and a spark plug. Because small-engine fitment varies by model and sn, confirm the Kohler reference numbers on your unit before ordering. Professional installation is recommended for safe, correct assembly and adjustment.

How does this kit restore engine performance?

Replacing a worn carburetor and associated seals clears fuel flow and air metering problems that cause rough idling, poor throttle response and hard starting. The kit supplies new seals and precision components so the engine receives the correct fuel/air mixture again.

• New carburetor body calibrated for specified Kohler part numbers
• Fresh gaskets eliminate vacuum and leak issues
• Included fuel pump and filter restore proper fuel delivery
• Air and oil filters reduce contaminants that impair combustion

Which engines and part numbers does this fit?

This kit targets Kohler lawn and garden engines that list 12-853-57-S, 12-853-80-S, 12-853-82-S, 12-853-139-S or AM125355 as their carburetor reference. It covers multiple mower and garden tractor models with CV12.5–CV15S and LT or LTR model family designations, but it is not universal.

• Compatible with Kohler models: LT133, LT150, LT155, LTR155, GS30
• Engine families: CV12.5, CV13S, CV13T, CV14, CV14S, CV15S
• Cross-reference the Kohler part number on your engine before purchase

What parts are included and why they matter?

The kit bundles the carburetor plus all the common service items you need to perform a full carb overhaul. Having these parts on hand reduces downtime and avoids repeated disassembly to source missing components.

• 1 carburetor matched to the listed Kohler numbers
• 1 pair of gaskets and fuel line to ensure leak-free installation
• Air filter assembly, pre-cleaner, oil filter and fuel filter for clean operation
• Fuel pump, clamps, spark plug and fuel shut-off valve for complete serviceability

Who should consider this kit: homeowners, landscapers and small-engine technicians who maintain Kohler-powered mowers and tractors that match the listed part numbers. If your machine shows symptoms like hard starting, stalling, poor idle or fuel leaks, and the engine's service manual references the Kohler numbers above, this kit offers an economical way to return the unit to dependable operation. Confirm part numbers and, if you’re not comfortable with engine work, arrange professional installation to ensure safe setup and correct carburetor adjustment.