PAI FAS-5059 Cab Air Spring | Replaces Mack 227QS42M Oil Filter Donaldson: P550371

Donaldson: P550371

Firestone: 9082

Tractor) Suspension Kenworth AG380 / Airglide 380

5 mounting thread on a 62 mm gasket

Cut tubing square with the included cutter and seat fully into the union to ensure a leak-free DOT-compliant connection

PAI FAS-5059 Cab Air Spring | Replaces Mack 227QS42M Oil Filter Donaldson: P550371The PAI FAS 5059 is a genuine Goodyear 1S4 173 cab air spring engineered for Mack truck cab suspension systems. This precision built air spring isolates vibration transmission from the frame to the cab, improving driver comfort and reducing noise on long hauls. PAI delivers premium OEM equivalent quality at competitive aftermarket pricing. Specifications Manufacturer PAI (Goodyear 1S4 173) Part Number FAS 5059 Part Type Cab Air Spring Outer Diameter