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Filter Wraps > Air Filter Foam Wrap

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The K&N Airforce Pre-Cleaner is a specially designed foam filter wrap made to extend the service interval of your K&N Filtercharger when used in very dusty conditions. The Airforce Pre-Cleaner is designed to be cleaned with K&N Cleaner or soap & water. Red colored Airforce pre-cleaners air oiled with K&N air filter oil after they are cleaned. They are made from large, open cell foam. Gray colored Airforce pre-cleaners do not use oil. They have smaller foam cells. [MORE]
Available Information
Installation Instruction Sheet
25-4250 Vehicle Applications

Part 25-4250 Product Specifications
Product Style: Filter Wrap - Oval Straight
Wrap Type: Airforce Pre-Cleaner
Color: Red
Material Used: Foam
Inside Width: 3.25 in (83 mm)
Inside Length: 4.5 in (114 mm)
Height: 1.5 in (38 mm)
Closed Top: No
Package Contents: 1 Airforce Pre-Cleaner Wrap
Package Quantity: 1
Air Filter Shape: Oval
Weight: 0.08 lb (0.04 kg)
Product Box Length: 7.25 in (184 mm)
Product Box Width: 6 in (152 mm)
Product Box Height: 3.25 in (83 mm)

Customer Feedback      Be the first to review part 25-4250

Great product. Fits my Stihl 044 magnum perfectly. Needed more intake as the cylinder was milled .030 and the ports were expanded and polished. This is a 20 year old saw and it screams.
Stratton Poindexter, Redmond, Oregon

K&N 25-4250 fits the following: