OLIFANT Air Filter Set for Donaldson & Kawasaki Engines — 2 Complete Sets (2 Inner + 2 Outer) OEM Fit

OLIFANT replacement air filter set provides two inner and two outer filters engineered to restore airflow and protection for engines using Donaldson P821575/P822858 and Kawasaki 11013-7044/11013-7045 specifications.

If your mower, tractor, or small engine has been running rough, losing power, or using more fuel, worn air filters are often the cause. This OLIFANT pack contains two complete sets (two inner plus two outer filters) sized to match Donaldson and Kawasaki OEM part numbers and compatible with many Briggs & Stratton and Fleetguard applications. The pair format gives you spares for future service intervals and covers a wide list of engine families from lawn and garden to light tractor duty.

Which engines and part numbers does this filter set fit?

These OLIFANT filters are manufactured to fit machines that accept Donaldson P821575 and P822858 or Kawasaki 11013-7044 and 11013-7045. They are also cross-reference compatible with several Briggs & Stratton and Fleetguard identifiers used across mower and small tractor lines.

• Donaldson references: P821575, P822858
• Kawasaki references: 11013-7044, 11013-7045
• Briggs & Stratton crosses: 841497, 821136
• Fleetguard crosses: AF25551, AF25552

How do these inner and outer filters benefit engine performance?

The dual-filter design captures larger debris with the outer element while the inner element provides fine particle filtration, protecting carburetors, fuel injectors, and cylinders. Cleaner intake air helps maintain power delivery, improves throttle response, and reduces the strain that can cause premature wear.

• Outer element traps leaves, grass, and large particles
• Inner element captures fine dust and soot
• Reduces engine wear and maintains factory airflow
• Helps stabilize fuel combustion and efficiency

What comes in the package and how often should I replace them?

The box contains two full sets — that is, two inner filters and two outer filters — enough for two service cycles on a single machine or one service each for two machines. Replacement frequency depends on operating conditions, but inspecting filters every 25 hours of use or at every seasonal service is a practical rule.

• Package: 2 inner + 2 outer air filters (two complete sets)
• Inspect at regular service intervals or after dusty jobs
• Replace sooner in very dusty, wet, or high-load environments
• Keep a spare set on hand for uninterrupted maintenance

Will these filters work as an OEM alternative?

Yes — OLIFANT filters are built to the same fitment dimensions and filtration roles as the referenced OEM parts, offering a cost-effective alternative without changing installation procedures. They are designed for straightforward, drop-in replacement into existing housings that accept the listed Donaldson and Kawasaki numbers.

• Form-fit for OEM housings matching listed part numbers
• Simple replacement with no modifications required
• Designed for the same service intervals as OEM units
• Saves money while maintaining expected filtration function

Who is this for: This OLIFANT 2-set air filter pack is aimed at homeowners, landscapers, and light-ag equipment operators who maintain Briggs & Stratton and Kawasaki-powered mowers, garden tractors, and small tractors. If you service multiple machines or want a ready spare for seasonal upkeep, the two-set package offers convenience and value while matching common Donaldson, Kawasaki, Fleetguard, and Briggs & Stratton filter references.