Kefly Filter Kit for Subaru Crosstrek Forester Impreza (2011–2018) — Engine, Oil & Cabin Filters, High‑Efficiency Media

Kefly's complete filter kit supplies an engine air filter, oil filter and cabin air filter sized to fit 2011–2018 Subaru Crosstrek, Forester and Impreza models for reliable filtration and engine protection.

Designed as a single-purchase maintenance solution, this kit replaces the key filter elements used in many Subaru H4 2.0L and 2.5L models. Each component is built with higher-grade media and durable parts — breathable fabric and reinforced metal components — so you can restore airflow, trap particles and keep cabin odors down between service intervals. The set is a practical option for DIYers and shops servicing Crosstrek, Forester and Impreza vehicles listed in the compatibility section.

Which Subaru models and engine codes does this kit fit?

Compatibility covers specific model years and engine configurations commonly found across Subaru compact and compact-SUV lines. Always compare part numbers or measurements to your vehicle's existing filters before ordering.

• 2013–2017 Subaru Crosstrek 2.0L H4
• 2011–2018 Subaru Forester H4 2.0L and 2.5L (non-turbo 2011–2013; all engines 2014–2018)
• 2012–2016 Subaru Impreza 2.0L (non-turbo) and 2012–2014 Impreza 2.5L (non-turbo)
• Replaces factory numbers: CA9997, 16546-AA090, 16546-AA10A, 16546-AA120, CF10930, 72880-FG000, 15208AA21A

How do these three filters improve daily driving and maintenance?

Each filter addresses a different system to maintain performance and comfort. The engine air filter keeps combustion air cleaner, the oil filter protects internal engine components from wear particles, and the cabin air filter reduces odors and airborne particles entering the passenger compartment.

• Engine air: high-breathability media reduces intake restriction while trapping dirt.
• Oil filter: metal end caps and center tube for structural stability and tear resistance.
• Cabin filter: multi-layer electrostatic media captures dust, pollen and odors.

What materials and construction differences should I expect compared with stock parts?

Kefly emphasizes durability and filtration efficiency in the design. The engine filter uses a reinforced, breathable fabric to resist deformation; the oil filter features metal components for wear resistance; and the cabin filter employs industrial electrostatic layers for improved particle capture.

• Reinforced filter fabric prevents tearing and maintains shape under airflow.
• Metal end caps and center tube add rigidity and longevity to the oil filter.
• Electrostatic multi-layer cabin media improves trapping of fine particulates.

When should I replace each filter to keep performance steady?

Replacement frequency depends on driving conditions, but the kit includes recommended intervals based on average use. Follow these guidelines and inspect filters more often in dusty or severe environments.

• Oil filter: replace approximately every 6 months or 5,000 km (whichever comes first).
• Engine air & cabin air filters: replace about every 12 months or 10,000 km.
• Check filters sooner if you drive in heavy dust, off-road, or severely polluted areas.

Who is this for? This Kefly filter kit is aimed at Subaru owners, independent mechanics and DIY enthusiasts who want a complete, matching set of replacement filters for Crosstrek, Forester and Impreza models from 2011–2018. It suits anyone looking to perform scheduled maintenance with higher-strength components and clear factory part-number compatibility, without sourcing individual parts from multiple suppliers.