DUOOK Air Filter Pair for Kawasaki & Kohler Engines — 11013-7044 & 11013-7045 Inner + Outer, Fits 16–26 HP Engines

DUOOK 2-piece inner and outer air filter set (11013-7044 & 11013-7045) replaces OEM filters for many Kawasaki and Kohler small engines to restore airflow and protect engine components.

These two replacement air filters are manufactured to fit a wide range of Kawasaki and Kohler engine models used in mowers, generators and compact equipment. The pair includes the outer and inner elements commonly required together during routine service, engineered to trap dirt while allowing adequate airflow. They match numerous OEM part numbers so you can replace both elements at once and keep engines running cleaner between services.

Which engines and models are compatible with this DUOOK filter pair?

These filters fit many Kawasaki and Kohler engines across multiple small-engine families. They are intended for engines from about 16 to 26 horsepower and cover specific model ranges from each manufacturer.

• Kawasaki fitment: FD750D, FD791D, FH601D, FH641D, FH680D, FH721D, FH601V–FH721V, FH770D, FX651V, FX691V, FX730V, FX1000V.
• Kohler fitment: C940–C980 and multiple CH, CV, LH, LV series engines used in lawn and utility equipment.
• Cross-references: replaces many OEM numbers for both inner and outer elements so it's easy to match to your existing parts list.

How do these filters perform compared with original equipment?

DUOOK designed the inner and outer elements to match the filtration area and sealing dimensions of the referenced OEM parts. They trap airborne particles while maintaining the airflow necessary for reliable engine performance, making them suitable for regular maintenance replacements.

• Two-piece set ensures both inner and outer filtration layers are swapped at once.
• Engineered dimensions to fit common housings for proper sealing and filtration.
• Manufactured to meet typical airflow and dust-holding expectations for small engines.

What does the package include and what support is provided?

Each purchase contains two air filter elements: one outer and one inner. DUOOK provides customer support to help with fitment questions or installation guidance, and they commit to responding to inquiries promptly.

• Included: 1 outer air filter (11013-7044) and 1 inner air filter (11013-7045).
• Free technical support from the seller for installation or compatibility questions.
• Quick response promise—contact the seller for assistance or to resolve issues.

When should I replace both inner and outer air filters together?

Changing both elements at the same time ensures consistent filtration performance and simplifies maintenance. If either element shows dirt, damage, or a compressed media surface, replace both to avoid reduced engine protection or flow restriction.

• Replace during scheduled service intervals or when filters appear dirty or damaged.
• Best practice: swap both inner and outer elements together to maintain designed filtration efficiency.
• Inspect filters more frequently in dusty or heavy-use conditions.

Who this is for: Owners and technicians who service Kawasaki or Kohler-powered lawn mowers, generators and light commercial equipment and need a reliable, direct-fit replacement for the inner and outer air elements. This set is suited to anyone maintaining 16–26 HP small engines who wants a complete pair of filters that cross-reference common OEM numbers and include seller support for fitment and installation questions.