Air compressor check valve, 1/2" Compression x 1/2" MPT with 1/8" hole; plug hole if not needed.  https://mastertoolrepair.com/1-8-blk-steel-plug-s-h-100b6e/ If the small unloader (bleeder) valve on or under your pressure switch leaks constantly...

White CW, 4-blade fan for air compressors. Fits Thomas 1007, 1107, 1207, 2807, 807, T-models. Keeps your pump cool. Replace if missing blades.

Old Part Numbers: SRV250140Air compressor safety relief valve, 1/4" MPT, 140 PSI. If your valve leaks below the pressure listed on the side of the valve, replace this vital safety feature.Specifications MPT Inlet: 1/4 in. Preset Setting: 140 PSI Max...

Old Part Numbers: 638415

Keep your air compressor from sliding all around your vehicle or floor. Order extra for future use.Specifications Height: 3/4"  Diameter: 1-1/2"

Universal Regulator: 4-port, two 1/4" FPT ports, and two 1/8" FPT ports (gauges sold separately here). The regulator controls the amount of air in your air compressor hose. Replace this if you're not able to adjust the PSI to your hose or if it leaks...

Old Part Numbers: 602633 4 Ports on bottom of switch. Preset to come on at 95 and cut off at 125 psi. 1/4" FPT threads and bottom unloader valve for 1/4" line. Can be used for 110 or 220 volt applications. Adjustable. Used on many electric compressors...