Kohler Fuel Filter 2-Pack — 75 Micron OEM Replacement for Gravity-Feed Small Engines

Genuine Kohler 2-pack fuel filters (25-050-21-S1) are OEM 75-micron gravity-feed filters designed to protect small engines by trapping contaminants before they reach the fuel system.

This two-piece set contains authentic Kohler replacement filters compatible with models that use part number 25-050-21-S1 (same as 25-050-21-S). Each element is rated at 75 microns and built for gravity-feed fuel systems, offering a direct-fit OEM solution when maintaining or restoring Kohler engines. The pair gives you spare capacity so filters can be changed on schedule without downtime, and because they are genuine Kohler components you keep factory tolerances and sealing materials intact.

How does this Kohler fuel filter fit my engine?

The filter is an OEM direct-replacement specified to match Kohler part 25-050-21-S and 25-050-21-S1, engineered to the original dimensions and seal configuration. Installation uses the same mounting and fuel-line connections as the factory unit, so no modifications are required.

• Direct fit for engines using Kohler 25-050-21-S / 25-050-21-S1
• Same dimensions and sealing as the original Kohler part
• Ready for gravity-feed fuel setups used on many small engines

What protection does a 75-micron rating provide?

A 75-micron rating captures larger particulate contaminants that can damage carburetors, fuel pumps, and injectors. It offers a balance between allowing sufficient fuel flow for gravity-fed systems while reducing abrasive particles from worn components, tank debris, or contaminated fuel.

• Traps larger particles that cause wear and clogging
• Maintains steady fuel flow for gravity-feed systems
• Helps extend life of downstream fuel components

How often should I replace these Kohler filters?

Replacement frequency depends on operating hours, fuel cleanliness and environmental conditions; a common guideline is to inspect at each service interval and replace annually or sooner if fuel appears contaminated. Because this listing includes two filters, you can replace one during mid-season checks and the second at year-end, or use the spare when a more frequent schedule is required.

• Inspect at every maintenance service or if performance changes
• Replace annually for typical residential use; more often in heavy or dirty environments
• Keep the second filter as an on-hand spare to minimize downtime

Will using genuine Kohler filters make a difference compared to aftermarket parts?

Genuine Kohler parts are produced to original specifications, preserving fit, material compatibility and filtration characteristics intended by the manufacturer. Aftermarket pieces can vary in element media, dimensions and sealing, which may affect performance or create leaks; choosing OEM reduces that risk.

• Manufactured to Kohler's original dimensions and materials
• Reduced likelihood of fitment issues or fuel leaks
• Consistent filtration performance matching factory expectations

Who is this for: Owners and technicians of Kohler-powered equipment who need a reliable, factory-spec replacement or spare for gravity-feed fuel systems. This two-pack suits homeowners maintaining lawn and garden machines, rental operators who want quick swaps to avoid downtime, and professional service shops that prioritize OEM parts for consistent fit and filtration. If your engine calls for Kohler part 25-050-21-S or 25-050-21-S1 and you prefer authentic components, this set provides two genuine 75-micron filters ready for immediate installation.