165 Replacement Pump Assembly with Flywheel, Single-Stage, 5 - 6.5 HP #05AD8A

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Price: $303.35


Old Part Numbers: 040-0426RP

For 5 to 6.5 HP units. 165 Air Compressor Pump with felt air filter to replace the original pump. Flywheel INCLUDED. Simply install the belt and discharge tube, add oil, and run.

Important: Be sure to torque the head bolts down after the first 5 hours of running new pump; this will ensure the head gaskets don't blow out.

Note: New style pump has 1/4" FPT & 1/8" FPT outlet ports in head (your old head may be 1/2" and will need an adapter). Part# 135-40042-SP is the adapter for old pumps with a 3/8" OD discharge tube; Part# 135-40062-SP is the adapter for old pumps with a 1/2" OD discharge tube.

Need oil? Click here for synthetic and synthetic-blend air compressor oil to keep your compressor running like new for years to come.


  • HP: 5 to 6.5 HP
  • Stages: Single-Stage
  • SCFM Delivery: 10.1 CFM @ 90 PSI
  • Max PSI: 155 PSI
  • Material of Construction: aluminum with steel sleeves
  • Flywheel: 12" OD single "A" groove (4L-style)
  • RPM: 700 / 1200 (depending on pulley diameter)
  • Duty Cycle: 80/20
  • Oil Capacity: 18 oz.
  • Weight: 26 lbs.
  • Bolt Pattern: 5.75" front-to-back, 5.87" side-to-side
  • Outlet: 1/4" FPT (exhaust on the left side of the pump head when looking opposite the flywheel)
  • Warranty: 1 year limited for Residential use / 90 days for Commercial use
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