We have BelAire 3312D4 parts here. Whether you need a pressure switch or a whole new pump, we have your parts. Don't forget the rubber isolator pads for floor mounting. BelAire 3312D4 parts are easy to come by at Master Tool Repair. We have helpful sales team members that can assist you with your repair. We have accessories as well as compressor oil to keep your pump running like a top. We keep the most popular BelAire 3312D4 parts in stock and we can order most other parts in a matter of a few days. To make ordering easier, we have created the ability for you to order parts by simply enlarging the schematic and then using your mouse to hover over the actual part. You will see the part pop up and are able to order by simply choosing the quantity of parts that you need. Make sure to keep spare parts on hand so that your down time will be minimal. Oil and air filters should be replaced every 3 to 4 months if used frequently, twice a year if not. Even if you're not using your compressor, drain your tank regularly to prevent rust.