B5900 2-Stage Pump

Air Compressor Pumps Two Stage 175 PSI

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Price: Originally: $742.56 $609.60

Found under the following brands:

Fini, FNA, Kobalt, Lefoo, Lefoo & WuxiHX, Rockworth, Prime, PERFORMAX

Includes flywheel, aftercooler and air filter. If your old B5900 does not have an aftercooler, also purchase the B5900AAK kit.

Note: Also order part number 1312100349 Bushing, which reduces the 1-1/4" female NPT fitting in the bottom of the Aftercooler to 3/4" male NPT.

This item fits the following models

B5900 Pump specs:

  • Requirement: a 5HP motor with at least a 7/8" shaft for this pump.
  • Swap out your expensive 2 stage pump with this inexpensive steel sleeved aluminum unit.
  • 18 CFM @100psi 16 CFM @ 175 PSI.
  • 1/2" FPT outlet. Bolt pattern 6.75 in. front to back 7.5 in. side to side.
  • 13.75 in. single belt flywheel.
  • 1-1/4" FPT on aftercooler outlet.
  • Total ht. 16" Min RPM 700 Max RPM 1400 New pump has 1 groove smaller flywheel but will work just fine. Simply run 1 belt and purchase a smaller belt.