Old Part Numbers: 1312100406Cut-In/Cut-Out is 145/175 PSI. If your pressure switch is leaking out of the small bleeder valve on the side or if located underneath, order a tank check valve instead,...

Old Part Numbers: SV25200, SRV250200, 1229O-200, 9710533300, 136-0007RPAir compressor safety relief valve, 1/4" MPT, 200 PSI. If your valve leaks below the pressure listed on the side of the valve,...

Old Part Numbers: NTB14Use this nylon tube if your air compressor pressure switch has a plastic unloader valve with a quick-connect fitting. Note: sold by the foot (quantity of 1 = 1 foot or 12...

Fastener for belt guard.

Air compressor oil site gauge and gasket. Replace if cloudy or leaking.Specifications 1" diameter

Air compressor aftercooler gasket. Also available in the complete Gasket Kit. Note: This gasket fits multiple pumps. Confirm the gasket kit you need is for the HP51 or the 

Includes all gaskets needed for a rebuild for your HP51 air compressor pump -- the head, inner valve plate, cylinder, crankcase, bearing cover, aftercooler and intercooler gaskets. If the compressor...

Old Part Numbers: V-215110AV, SRV250225, 1229O-225Air compressor safety valve, 1/4" male NPT, 225 PSI. If your valve leaks below the pressure listed on the side of the valve, replace this vital...

Old Part Numbers: 2236109858, 2236108794Head gasket for B7000 / HP51 pumps.  

Intercooler Gasket (2 used).

Old Part Numbers: 13121001723/4" FPT x 1" MPT air compressor Check Valve with 1/8" FPT side port. If the small unloader (bleeder) valve on or under your switch leaks constantly AFTER the unit shuts...

3/4" FPT x 3/4" MPT ball valve for air compressors.

Old Part Numbers: SRV250065Air compressor safety relief valve. If your valve leaks below the pressure listed on the side of the valve, replace this vital safety feature.Specifications MPT Inlet: 1/4...

Old Part Numbers: CK30310Complete metal air filter assembly for air compressors with filter element plus 3 extra filter elements. 1" MPT threaded inlet. Takes the #14-SOL Filter Element. Fits the...

Complete HP51 Air Compressor Pump Assembly, including flywheel, aftercooler, and air filter assembly. 10 - 15 HP. Need oil? 

Old Part Numbers: 6210717400Valve Plate Assy. with pre-installed valves. Order gaskets separately. Poor performance or air leaks out of the intake filter while the unit is running? This is probably...

"Tall" filter element.

Old Part Numbers: 622401910016.93" OD flywheel for HP51 pump. Replace if warped or if any cooling fins are missing.Extra DetailsTorque flywheel bolt to 33-37 ft/lbs.

10mm steel aftercooler bolt for B5900/HP51 air compressor pumps.

Old Part Numbers: 1000112

Intercooler Tube HP51 Pump

Complete "tall boy" hollow-style filter assembly for air compressors, including the S1027-ACS filter element. Found on many larger and older units. 1" MPT threaded inlet. Replacing the pump's air...

Oil Sight Glass, HP51 pump.

Old Part Numbers: 5070101, 2236102167Aftercooler, HP51 pump,

Pump Head, HP51 Torque: 40 lbs

Old Part Numbers: 6211848500, 2236113361Flywheel Bolt, 10 x 35mm.

Old Part Numbers: 131210040110 HP, 3 Phase, 208-230/460V