MOWFILL Air Filter Kit for Kohler & Kawasaki - Outer + Inner Set (25 083 01 / 25 083 04) OEM-fit Pleated Media

MOWFILL offers a matched outer and inner air filter kit that replaces Kohler 25 083 01 / 25 083 04 and Kawasaki 11013-series filters to restore airflow and protect engines.

This two-piece replacement set includes a precisely sized outer air cleaner and a complementary inner filter designed for a wide range of small engines from Kohler, Kawasaki and several equipment brands. The pair fits many engine families (FX, FD, FH series and CH/CV series) and common OEM part numbers, giving you a factory-style fit without the premium price. Each filter is molded to match OEM dimensions so installation is straightforward and the seal engages correctly under normal maintenance procedures.

Which engines and OEM numbers does this MOWFILL kit replace?

The kit is engineered to substitute common Kohler and Kawasaki air cleaner parts across multiple models and brands. It covers both the outer and inner elements that are usually replaced together during service.

• Outer filter replaces Kohler 25 083 01 / 25 083 01-S and Kawasaki 11013-7020, 11013-7044.
• Inner filter replaces Kohler 25 083 04 / 25 083 04-S and Kawasaki 11013-7019, 11013-7045.
• Compatibility listed for Kohler CH, CV and Lambdas (16–27 hp) and Kawasaki FX/FD/FH engine families.
• Also cross-references John Deere and several aftermarket numbers for broad coverage.

How do these filters fit and install on my mower or equipment?

The MOWFILL outer and inner elements mirror OEM dimensions so they drop into the stock airbox and seal against the housing. Installation is typically a matter of removing the airbox cover, swapping both elements, and re-securing the cover—no tools beyond basic hand tools in most cases.

• Exact OEM-sized molding ensures a snug fit into standard housings.
• Replace both outer and inner at the same service interval for best performance.
• Designed to seat correctly to prevent bypass and maintain engine protection.

What performance and material details should I expect from this pair?

These filters are built to meet typical OEM filtration needs—sturdy frames, pleated media and a design that balances airflow with particle retention. The outer element captures larger debris while the inner catches finer dust, providing staged protection for combustion components.

• Durable pleated media for consistent airflow and filtration across the life of the element.
• Rigid frame construction to maintain shape under suction and vibration.
• Engineered for typical outdoor use on lawn, garden and light commercial machines.

When should I replace these filters and what comes in the package?

Replace air elements according to your equipment manufacturer’s schedule, or more often in dusty conditions. The kit is supplied with one outer filter and one inner filter, ready to install, and backed by MOWFILL customer support if you need fitment assistance.

• Package includes: 1 outer air filter + 1 inner air filter — ready to install.
• Inspect at every oil change and replace sooner in dusty or sandy environments.
• If in doubt, swap both elements together to restore optimal intake protection.

Who is this for: This MOWFILL replacement kit is intended for owners and service technicians of lawn tractors, zero-turn mowers, compact utility units and portable equipment powered by compatible Kohler or Kawasaki engines. It’s a practical choice for routine maintenance shops and DIYers who need an exact-sized, cost-effective alternative to OEM filters for models that accept Kohler 25 083 01 / 25 083 04 or Kawasaki 11013-series air elements.