4090HK17, 4090K17 #01B4E8
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    Model Numbers: 4090HK17, 4090K17
Repair Parts for Rol-Air 4090HK17, 4090K17 Portable Single Stage Oil-Bath Gas Air Compressor
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            Ring Set for Both Pistons #07F89F
Price: $71.15Order rings if your unit is using oil and your valves are good. Hone the cylinder walls prior to installing. Order cylinder gasket if only removing cylinder and installing rings.Price: $71.15 - 
            
            Rolair K17 Air Compressor Pump Gasket Kit #07F8A5
Price: $86.83Includes all necessary gaskets for rebuilding your K17 model air compressor pump: head gasket, inner valve plate gasket, valve plate-to-cylinder gasket, crankcase gaskets, bearing cover gaskets, and oil sight gauge seal. If the compressor pump...Price: $86.83 - 
            
            Price: $674.25 - 
            
            Air Compressor Pressure Switch / Manifold Hex Head Pipe Plug, 1/4"-18 NPT #0E52D4
Price: $0.86Old Part Numbers: 3168Air compressor pressure switch/manifold pipe plug, 1/4"-18 male NPT. A very common hex plug used on countless air compressors, this 1/4" NPT countersunk hex plug installs into any fitting or manifold that has an extra 1/4" female...Price: $0.86 - 
            
            Price: $2.62 - 
            
            Price: $2.42 - 
            
            Aftercooler #07F8C7
Price: $53.55Old Part Numbers: 305014ACHFinned aftercooler. Order o-ring to go with aftercooler.Price: $53.55 - 
            
            Oil Sight Gauge, K11/K17/K24/K30 Pumps #07F8C1
Price: $13.78Old Part Numbers: 30500130CHOil Site Gauge. Save your old gasket as it's not included.Price: $13.78