High Flow Washable Air Filters. Lower Exhaust Temperature. Increase HP and Fuel Mileage.

Reference: Baldwin: RS3539 Fleet Guard: AF25247 Luber Finer: LAF4816 Donaldson: P534816 Wix: 42971 NAPA: 2971 Fits: Freightliner: Classic Kenworth: T800, W900 Peterbilt: 367, 377, 387, 388 Western Star, We also offer replacement Fleet Air Wraps 3539. *Don't Forget Your Klotz Oil*